| Proctor Ellison Company - |
Elkland |
PA |
| Quakertown Tractor Company - |
Quakertown |
PA |
| Railway Spring And Manufacturing Company - |
Pittsburgh |
PA |
| Reed Electric Company - |
Philadelphia |
PA |
| Richard Finishing Company, Incorporated - |
Jerwyn |
PA |
| Robesonia Iron Company - |
Robesonia |
PA |
| Rockpoint Sand Company Of Pittsburgh - |
West Ellwood Junction |
PA |
| S. Faith Company - |
Philadelphia |
PA |
| Savage Arms Corporation - |
Sharon |
PA |
| Schutte And Koerting Company - |
Philadelphia |
PA |
| Scranton Bolt And Nut Company - |
Scranton |
PA |
| Semet-solvay Company - |
Dunbar |
PA |
| Sharon Steel Hoop Company - |
Pittsburgh |
PA |
| Shenango Valley Steel Company - |
New Castle |
PA |
| Simpson And Watkins - |
Duryza |
PA |
| Sonman Shaft Coal Company - |
Portage |
PA |
| Southmark Mills Company - |
Philadelphia |
PA |
| American Car And Foundry Company - |
Milton |
PA |
| Sprenger Brewing Company - |
Lancaster |
PA |
| Bethlehem Steel - |
Steelton |
PA |
| St. Nicholas Building - |
Pittsburgh |
PA |
| Braeburn Alloy Steel Company - |
Braeburn |
PA |
| Standard Steel Works Company - |
Philadelphia |
PA |
| Chester High School - |
Chester |
PA |
| Steel Car Forge Company - |
Ellwood City |
PA |
| Delaware Alloy Forge - |
Philadelphia |
PA |
| Sun Company, Incorporated, Refinery - |
Marcus Hook |
PA |
| E.j. Lavino Company - |
Plymouth Meeting |
PA |
| Susquehanna Coal Company - |
Wilkes Barre |
PA |
| Frank Romano - |
Philadelphia |
PA |
| Taws And Hartman - |
Philadelphia |
PA |
| Glen Gery Shale Brick Corporation - |
Ephrata |
PA |
| Thomas Dolan And Company - |
Philadelphia |
PA |
| Hubbard Tool Division - |
Pittsburgh |
PA |
| Tioga Coal Company - |
Wilkes Barre |
PA |
| John Tack Sons - |
Butler |
PA |
| Turner And Serrel - |
Philadelphia |
PA |
| Lukens Steel Co - |
Coatsville |
PA |
| Union League Club - |
Philadelphia |
PA |
| Mc Conway Turley Corp - |
Pittsburgh |
PA |
| United Gas Improvement Company - |
Wayne |
PA |
| Mulligan Harold R - |
Philadelphia |
PA |
| United States Seamless Tube Company - |
Christy Park |
PA |
| Norris Smelting Refining - |
Swedeland |
PA |
| Us Army Supply Base - |
Philadelphia |
PA |
| Pennsylvania Railroad Co - |
Philadelphia |
PA |
| Valley Mould And Iron Company - |
Sharpsville |
PA |
| Pittsburgh Metal Process - |
Pittsburgh |
PA |
| Vinton Colliery Company - |
Vintondale |
PA |
| Reading Railroad Co - |
Philadelphia |
PA |
| W. Glyde Wilkins, C.e. - |
Pittsburgh |
PA |
| Schutte Doarting Co - |
Cornwall Heights |
PA |
| W.p.o. Railroad - |
Philadelphia |
PA |
| Sun Shipbuilding Dry Dock Co - |
Chester |
PA |
| Washington Electric Light And Power Company - |
Washington |
PA |
| Tru Knit Industries - |
Philadelphia |
PA |
| Weeks Brothers - |
Pittsburgh |
PA |
| United States Steel Corporation - |
Ambridge |
PA |
| West Penn Power Company - |
Springdale |
PA |
| Victor Chemical Works - |
Morrisville |
PA |
| Western Penitentiary Of Pennsylvania - |
Allegheny |
PA |
| Wood Mrs Josephine Green - |
Conshohocken |
PA |
| Westinghouse Electric Company - |
Pittsburgh |
PA |
| Allen Products Company - |
Allentown |
PA |
| Westmoreland Coal Company - |
Yukon |
PA |
| Baldwin-lima-hamilton Corporation - |
Eddystone |
PA |
| Widener Building - |
Philadelphia |
PA |
| Bornot, Incorporated - |
Philadelphia |
PA |
| William Weightman - |
Philadelphia |
PA |
| Defense Supply Agency - |
Philadelphia |
PA |
| Witco Corporation - |
Petrolia |
PA |
| Fibrous Glass Products - |
Mountain Top |
PA |
| William H. Taylor And Company - |
Allentown |
PA |
| J.b. Swayne Son - |
Kennett Square |
PA |
| Wyoming Valley Electric Light, Heat Power Company - |
Wilkes Barre |
PA |
| Lasko Metal Products, Incorporated - |
Westchester |
PA |
| United States Steel - |
Duquesne |
PA |
| Miduale-heppenstahl - |
Philadelphia |
PA |
| Phillip Carey - |
Plymouth |
PA |
| Pennsylvania Sugar - |
Philadelphia |
PA |
| Pennsylvania Railroad - |
Chester |
PA |
| Retreat State Hospital - |
Hunlock Creek |
PA |
| Boston Ohio Railroad Company - |
Glenwood |
PA |
| S.s. Midland - |
Philadelphia |
PA |
| Boston Ohio Railroad Company - |
New Castle |
PA |
| Springwell Foundry - |
Chester |
PA |
| Riley Stoker Corporation, 28th Christian - |
Philadelphia |
PA |
| Union Paving Company - |
Bridgeport |
PA |
| Philadelphia Electric Company - |
Richmond |
PA |
| Whitman Chocolate - |
Philadelphia |
PA |
| Fairless Steel - |
Fairless Hills |
PA |
| Marple Township - |
Delaware County |
PA |
| Lone Star Cement - |
Nazareth |
PA |
| Penn Treaty Overall - |
Philadelphia |
PA |
| Saba Power - |
Farouqabad |
PA |
| Selinsgrove State School - |
Selingrove |
PA |
| Allegheny Airlines Terminal - |
Pittsburgh |
PA |
| General Steel Castings - |
Bodyston |
PA |
| Westinghouse Electric Corp - |
Beaver |
PA |
| Alon Engineering Corp - |
Pittsburgh |
PA |
| Bliss Silk Throwing Company - Jessup Plant - |
Dickson City |
PA |
| U.s. Steel Corporation - |
Mckees Rocks |
PA |
| Gulf Refining Company - |
Girard Point |
PA |
| Brownsville Golden Age Nu - |
Brownsville |
PA |
| Koppers Company (a/k/a Arco/polymers, Inc. Or Sinclair-koppers) - |
Kabuta |
PA |
| Us Steel Corporation Imperial - |
W Oil City |
PA |
| Sun Oil Company - Marcus Hook Refinery - |
Marcus Hook |
PA |
| American Olean - |
Quakertown |
PA |
| Mesta Machine Co (a/k/a United Engineering Foundry Co.) - |
New Castle |
PA |
| Kawneer Co Inc - |
Bloomsburg |
PA |
| Episcopal Hospital - |
Philadelphia |
PA |
| Bickley Furnaces Inc - |
Philadelphia |
PA |
| Philadelphia Navy Yard Training School - |
Philadelphia |
PA |
| Circle Heating Service - |
Pittsburgh |
PA |
| Oswald Hess Company, Inc - 1314 Spring Garden Ave. - |
Pittsburgh |
PA |
| Drever Co - |
Bethagres |
PA |
| Curtis Publishing Co - |
Sharon Hill |
PA |
| Falcon Equipment Co - |
New Brighton |
PA |
| Metropolitan Edison Company - |
West Reading |
PA |
| Globe Plastic Co - |
Croydon |
PA |
| Armstrong Cont Supply - |
Lancaster |
PA |
| Jacoby Heating Inc - |
Harrisburg |
PA |
| E.s. Atkinson - |
Erie |
PA |
| Lone Star Industries Inc - |
Nazareth |
PA |
| K L Refractories - |
Erie |
PA |
| Neals Welding And Fabricat - |
Steelton |
PA |
| Palladinon - |
Pottstown |
PA |
| Perry Ship Builders Compa - |
Erie |
PA |
| Sun Oil - |
Marcus Hook |
PA |
| Plumb Fayette H Inc - |
Philadelphia |
PA |
| Wheatland Tube - |
Wheatland |
PA |
| South Pittsburgh Water Wo - |
Pittsburgh |
PA |
| Mormacscan - |
Chester |
PA |
| Tri-state Metals Company - |
Quakertown |
PA |
| Vega (t-ak-286) - |
Chester |
PA |
| West Penn Power Co - |
New Eagle |
PA |
| American Cyanamid Company - |
Bridgeville |
PA |
| Greenwich Collieries - |
Barnesboro |
PA |
| Barrett Chemical Company - |
Philadelphia |
PA |
| Cressona Aluminum - |
Cressona |
PA |
| Budd Company - |
Bridgeport |
PA |
| U.s. Steel - |
Fairless Hills |
PA |
| Decker Associates Inc. - |
Orefield |
PA |
| Cartech Corp - |
Reading |
PA |
| General American Transport Corporation - |
Sharon |
PA |
| Union Specialties - |
Verona |
PA |
| Hiram Swank's Sons - |
Johnstown |
PA |
| Air Master - |
Philadelphia |
PA |
| Jp Austin Associated Inc - |
Pittsburgh |
PA |
| Capital Products - |
Harrisburg |
PA |
| Philadelphia Asbestos Cork - |
Philadelphia |
PA |
| Erie Marine - |
Erie |
PA |
| Pittsburgh Coal Corporation - |
Imperial |
PA |
| Harcast Corporation - |
Glenolden |
PA |
| Uss Russell Mill - |
Rochester |
PA |
| Mather Co. - |
Toledo |
PA |
| Us Steel - |
Morrisville |
PA |
| Pittron - |
Glassport |
PA |
| Westinghouse Atomic Labratory - |
West Mifflin |
PA |
| St Joe Minerals - |
Josephtown |
PA |
| Oneida Mining Company - |
Armagh - Bush Valley |
PA |
| Washington Tool - |
Washington |
PA |
| Park City Mall - |
Lancaster |
PA |
| Alan Wood Steel - Riner Road - |
Conshohocken |
PA |
| Carborundum - |
Latrobe |
PA |
| Us Steel - Homestead Works - |
Homestead |
PA |
| Greengate Mall - |
Greensburg |
PA |
| West Pennsylvania Power Company - |
Monongahela |
PA |
| Ametek - |
Sellersville |
PA |
| Nicholson File Company - Red Lion Decatur Roads - |
Philadelphia |
PA |
| National Can Corporation - |
Bristol |
PA |
| Inland Products - |
Pittsburg |
PA |
| Union Railroad - |
Braddock |
PA |
| Us Steel - Sinter Plant #1 - |
Saxonburg |
PA |
| British Petroleum Oil - Sinclair Refinery - |
Trainer |
PA |
| Pennsylvania Power Light - Montour Station - |
Washingtonville |
PA |
| Owens Corning Fiberglas - |
Ephrata |
PA |
| Armstrong Cork Company, Storage Blending Tank - |
Lancaster |
PA |
| A. Hirsch Air Company - |
Philadelphia |
PA |
| Eureka Stone Quarry, Incorporated - |
Bucks County |
PA |
| Allentown State Hospital - |
Allentown |
PA |
| Overbrook Steam Heat Company, Woodbine Ave. Uplant Way - |
Philadelphia |
PA |
| American Viscose Plant - |
Lewistown |
PA |
| Philadelphia Electric Company - Station C - |
Philadelphia |
PA |
| Babcock Wilcox - |
Wallace Run |
PA |
| U.s. Steel, Clairton Works, Power House #2 - |
Clairton |
PA |
| Berillium Corporation - |
Temple |
PA |
| Medusa Portland Cement Company - |
West York |
PA |
| Bryn Mawr Hospital - |
Bryn Mawr |
PA |
| Jones Laughlin Steel - |
Aliquippa |
PA |
| Children's Hospital - |
Pittsburgh |
PA |
| West Penn Powerhouse - |
Milesburg |
PA |
| Delaware Valley Drywall - |
Croydon |
PA |
| Gaf (ruberoid) - |
Fullerton |
PA |
| Fidelity Bank Building - |
Philadelphia |
PA |
| Uss Chemicals - |
Neville Island |
PA |
| Goodyear - |
Pittsburgh |
PA |
| Dahlgren - |
Philadelphia |
PA |
| Holiday Inn - |
Philadelphia |
PA |
| Minneapolis - |
Philadelphia |
PA |
| John David Company - |
Philadelphia |
PA |
| #4 Shaft - |
Dunmore |
PA |
| Lavino Shipping Company - |
Philadelphia |
PA |
| A. French Spring Company - |
Pittsburgh |
PA |
| Martins Creek Powerhouse - |
Martins Creek |
PA |
| Academy Of The New Church - |
Bryn Athyn |
PA |
| Mother Of Divine Grace - |
Philadelphia |
PA |
| Albright Coal Company - |
Llewellyn |
PA |
| Norristown State Hospital - |
Norristown |
PA |
| Allegheny By-product Coke Company - |
Glassport |
PA |
| Penn Jersey Boiler Company - |
Pennsauken |
PA |
| Allegheny Furnace - |
Altoona |
PA |
| Philco - |
Blue Bell |
PA |
| Allentown Hospital - |
Allentown |
PA |
| Quaker State Machine Company - |
Willow Grove |
PA |
| Atlas Cement Company - |
Northampton |
PA |
| Rohm Haas - |
Philadelphia |
PA |
| American Pipe Manufacturing Company - |
Philadelphia |
PA |
| Solesbury Elementary School - |
Solesbury |
PA |
| American Steel Hoop Company - |
Allegheny |
PA |
| Struthers And Wells - |
Titusville |
PA |
| American Coke Company - |
Pittsburgh |
PA |
| Us Steel - |
Shiremanstown |
PA |
| American Rolling Mill Company - |
Butler |
PA |
| Western Electric Company - Allentown Works - |
Allentown |
PA |
| American Type Founders Company - |
Philadelphia |
PA |
| Philadelphia School District - |
Philadelphia |
PA |
| Appleton Papers, Incorporated - |
Roaring Springs |
PA |
| Jones And Laughlin Steel - |
Alquippa |
PA |
| Armstrong Cork Company - |
Pittsburgh |
PA |
| Insuldeck Corp - |
Bath |
PA |
| Atlas Portland Cement Company - |
Northampton |
PA |
| Magazine Lumber Co - |
Cardale |
PA |
| Baldt Anchor, Chain Forge Company - |
Chester |
PA |
| Cash And Carry Lumber Cco - |
Derry |
PA |
| Barrett Division Allied Chemical And Dye Corporation - |
Philadelphia |
PA |
| Gnex Inc - |
Erie |
PA |
| Beaver Coal And Coke Company - |
Wampum |
PA |
| Till Distributing - |
Erie |
PA |
| Bellefield Hotel - |
Pittsburgh |
PA |
| Armstrong Contracting Supply Corporation - |
Harrisburg |
PA |
| Berwind White Coal Mining Company - |
Scalp Level |
PA |
| Leechburg Supply Co - |
Leechburg |
PA |
| Bethlehem Steel Corporation, Bethlehem Lukens Plate Products - |
Coatesville |
PA |
| Industrial Gasket Shim Co - |
Meadow Lands |
PA |
| Bissell And Company - |
Pittsburgh |
PA |
| Argyl Manufacturing Co - |
Pen Argyl |
PA |
| Bollinger Brothers - |
Pittsburgh |
PA |
| The Philip Carey Mfg Corp - |
Philadelphia |
PA |
| Bradshaw And Company - |
Pittsburgh |
PA |
| University Of Pittsburgh - |
Pittsburgh |
PA |
| Brown And Company, Incorporated - |
Pittsburgh |
PA |
| Ivor J Lee Co - |
Sharon |
PA |
| Buffalo Susquehanna Coal Coke Company - |
Big Run |
PA |
| O C Cluss Lumber Co - |
Uniontown |
PA |
| C.c. Harrison Building - |
Philadelphia |
PA |
| Aero Supply Manufacturing - |
Corry |
PA |
| Cambria Steel Company - |
Johnston |
PA |
| American Locomotive Co. - |
Latrobe |
PA |
| Carlisle Gas And Water Company - |
Carlisle |
PA |
| Borough Of Grove City – Sewage Treatment Plant - |
Grove City |
PA |
| Carnegie Steel Company - |
Munhall |
PA |
| Cochrane Dv Crane Corporation - |
King Of Prussia |
PA |
| Carnegie Illinois Steel Corporation - |
Homestead |
PA |
| Dowty Corporation - |
Zelienople |
PA |
| Central Railroad Of New Jersey - |
Ashley |
PA |
| General Tire Rubber Company - |
Jeanette |
PA |
| Charmin Paper Products Company - |
Mehoopany |
PA |
| Hydro-blast Corporation - |
Waynesboro |
PA |
| Cheswick Power Company - |
Springdale |
PA |
| Koppers Company (air Reduction) - |
Johnstown |
PA |
| City Electric Light Company - |
Allegheny City |
PA |
| Mackintosh-hemphill Company - |
Pittsburgh |
PA |
| Climax Molybdenum Company - |
Langeloth |
PA |
| Okonite Co. (hazard Wire Rope) - |
Wilkes Barrre |
PA |
| Colonial Collieries Company - |
Mt Carmel |
PA |
| Pennsylvania Smelting Refining Co. - |
Philadelphia |
PA |
| Commons At Fallsington - |
Morrisville |
PA |
| Price Battery Corp. - |
Hamburg |
PA |
| Consolidated Steel Wire Company - |
Beaver Falls |
PA |
| South Pittsburgh Water Company - |
Pittsburgh |
PA |
| Cowanshannock Coal And Coke Company - |
Punxsutawney |
PA |
| U.s. Steel Corporation - |
Vandegrift |
PA |
| Crescent Works - |
Pittsburgh |
PA |
| Westinghouse Elec. Corp. - |
Essington |
PA |
| Curtis Publishing Company - |
Philadelphia |
PA |
| Air Products Co - |
Allentown |
PA |
| Dager And Cox, Eureka Paper Mills - |
Bridgeport |
PA |
| Philadelphia Naval Shipyard - |
Uss Los Angeles |
PA |
| Delaware And Hudson Company - |
Plymouth Junction |
PA |
| Bethlehem Mines Corporation - Hanover Quarry - |
Hanover |
PA |
| Delaware Mine - |
Hudson |
PA |
| Dyna-vac Power Cleaning Of Buxmont - |
Doylestown |
PA |
| Dexter Portland Cement Company - |
Siegfried |
PA |
| Keystone Portland Cement Company - |
Bath |
PA |
| D'olier Engineering Company - |
Philadelphia |
PA |
| Moss-rose Manufacturing Company - |
Philadelphia |
PA |
| Dravo Corporation - |
Philadelphia |
PA |
| Reading Metals Refining Co. - |
Reading |
PA |
| Duquesne Forge Company - |
Pittsburgh |
PA |
| United States Steel Corporation - |
Duquesne |
PA |
| E. G. Brooke Iron Company - |
Birdsboro |
PA |
| Wheeling-pittsburg Steel Corporation - |
Allenport |
PA |
| East Broad Top Railroad Company - |
Orbisonia |
PA |
| E Thompson Works - |
Braddock |
PA |
| Ebensburg Light, Heat And Power Company - |
Ebensburg |
PA |
| Marlsbary Mfg Co - |
Uniontown |
PA |
| Edison Electric Illuminating Company - |
Altoona |
PA |
| Armco Steel - |
Sharon |
PA |
| Eleventh Ward School - |
Allegheny |
PA |
| B. R. P. Roundhouse - |
Puxsatawney |
PA |
| Empire Building - |
Pittsburgh |
PA |
| Folwell Bros. John Bromley Sons - |
Philadelphia |
PA |
| Erie Lighting Company - |
Erie |
PA |
| Hog Island Shipyard - |
Philadelphia |
PA |
| Everts And Overdeer, Incorporated - |
Lancaster |
PA |
| Maple Avenue Hospital - |
Du Bois |
PA |
| F.c. Roberts Company Engineers - |
Philadelphia |
PA |
| Pennsylvania Railroad - |
Balairsville |
PA |
| Fayette Manufacturing Company - |
Chester |
PA |
| Pressed Steel Car Co - |
Pittsburgh |
PA |
| Firth Sterling, Incorporated - |
Mckeesport |
PA |
| Susquehanna Silk Mills - |
Huntington |
PA |
| Ft. Martin Power Station - |
Point Marion |
PA |
| Westinghouse - |
Lester |
PA |
| Frankfurt Plant - |
Philadelphia |
PA |
| Western Pennsylvania Power Co - |
|
PA |
| G.w. Johnson Company - |
New Castle |
PA |
| Beckwith Machinery - |
Murraysville |
PA |
| General Electric Company - |
Erie |
PA |
| General Electric Company- |
Erie |
PA |
| George H. Walbridge Lackawanna Light Company - |
Scranton |
PA |
| Pennsylvania Electric Co. - |
Homer City |
PA |
| Gipsey Grove Colliery - |
Dunmore |
PA |
| Westinghouse Bettis Atomic - |
West Mifflin |
PA |
| Glen Summit - |
Spring Siding |
PA |
| Sitkin Metal Trading, Inc. - |
Lewistown |
PA |
| Greensburg-connellsville Coal Coke Company - |
Burgettstown |
PA |
| Hill Hall, Wernersville State Hospital - |
Wernersville |
PA |
| H.f. Watson - |
Erie |
PA |
| 46th Haverford School - |
Philadelphia |
PA |
| H. Westhoff- Florist - |
Hoffman Sta. |
PA |
| Arco Chemical - |
Newtown |
PA |
| H.c. Frick Coke Company - |
York Run |
PA |
| Board Of Education Buildings - |
Philadelphia |
PA |
| Hampton Mines - |
Scranton |
PA |
| Children`s Reception Welfare - |
Philadelphia |
PA |
| Harrison, Havemeyer Company - |
Philadelphia |
PA |
| Danville Powerhouse - |
Washingtonville |
PA |
| Heeren Brothers And Company - |
Pittsburgh |
PA |
| Exide Battery Company - |
Philadelphia |
PA |
| Herris Island - |
Pittsburgh |
PA |
| General Electric Company- Warehouse - |
Philadelphia |
PA |
| Hollenbach Colliery #2 - |
Wilkes Barre |
PA |
| Homer City Powerhouse - |
Homer City |
PA |
| Honeywell, Incorporated - |
Emlenton |
PA |
| Jones Junior High School- Ann Memphis Streets - |
Philadelphia |
PA |
| Hudson Coal Company - |
Scranton |
PA |
| Leidy School - |
Philadelphia |
PA |
| Illinois Zinc Company - |
Pittsburgh |
PA |
| Morrell Felin Meat Packers - |
Philadelphia |
PA |
| Ingram Richardson Company - |
Beaver Falls |
PA |
| Park City Shopping Center - |
Park City |
PA |
| Irwin Works - |
Irwin |
PA |
| Philadelphia Aquatic Club - |
Philadelphia |
PA |
| J.h. Wilcox - |
Chester |
PA |
| Pickett Middle School - Wayne Chelten - |
Philadelphia |
PA |
| J.f: Betz And Son - |
Philadelphia |
PA |
| Sacred Heart Hospital - |
Norristown |
PA |
| James Mckay Company - |
Mckees Rocks |
PA |
| Smith Kline French - |
Swedesboro |
PA |
| Jawood Lukens - |
East Conshohocken |
PA |
| Temple University - Hospital - |
Philadelphia |
PA |
| Jno. F. Wilcox - |
Pittsburgh |
PA |
| University Of Pennsylvania - Law School - |
Philadelphia |
PA |
| John Wanamaker Department Store - |
Philadelphia |
PA |
| Us Army Reserve Center - |
Reading |
PA |
| Jones And Laughlin Steel Corporation - |
Eliza |
PA |
| Northeast Water Pollution Control Plant - |
Philadelphia |
PA |
| Keasbey And Mattison Company - |
Ambler |
PA |
| A M Byers Company - |
Ambridge |
PA |
| Keystone Coal And Coke Company - |
Dundale |
PA |
| Aliquippa Works - Station 27 - Nm Pipe Shop - |
Aliquippa |
PA |
| Kolnile Brewing Company - |
Philadelphia |
PA |
| Allegheny Plastics Company - |
Coraopolis |
PA |
| Labor Products And Ice Company - |
Brackenridge |
PA |
| Argyl Mfg Co - |
Pen Argyl |
PA |
| Lancaster Cork Works - |
Lancaster |
PA |
| Atlantic Refining Co - Central Warehouse-east Side - B O Delivery - Track 85 - |
Philadelphia |
PA |
| Lawrence Cement Company Of Pennsylvania - |
Siegfried, Northampton |
PA |
| Atlantic Refining Co - Rt. Breeze Refinery - |
Philadelphia |
PA |
| Lehigh And Wilkes Barre Coal Company - |
Audeuried |
PA |
| Badwell Co. - |
Harrisburg |
PA |
| Lehigh Coal And Navagation Company - |
Philadelphia |
PA |
| Bethlehem Steel Company - #4 Shop/dept. - Lehigh Division - |
Bethlehem |
PA |
| Lehigh Navigation Electric Company - |
Hanto |
PA |
| Bethlehem Steel Co - Pipe Shop Department - Saucon Division - |
Bethlehem |
PA |
| Lehigh Valley Coal Company, Prospect Colliery - |
Wilkes Barre |
PA |
| Caterpillar Tractor Company - |
East York |
PA |
| Lehigh And Wilkes Barre Coal Company - |
Notingham Colliery |
PA |
| Clairton Works - Methyl Naptheline Division - |
Clairton |
PA |
| Liberty Market Company - |
Pittsburgh |
PA |
| Pittsburgh Consolidation Coal Company - Montour 10 Mine - Research Development Division - Pilot Pl - |
Library |
PA |
| Link Belt Engineering Company, By Dodge And Day - |
Nicetown, Philadelphia |
PA |
| Duquesne Brewing Co. Of Pittsburgh - New Bottling House - |
Pittsburgh |
PA |
| Lucent Technologies, Incorporated - |
Breinigsville |
PA |
| Equitable Life Assurance Society - Gateway Center - Basement Stockroom 1 - |
Pittsburgh |
PA |
| M. And W.h. Nixon, Paper Company - |
Philadelphia |
PA |
| Fort Cherry School - |
Mcdonald |
PA |
| Malthby Colliery - |
Wyoming |
PA |
| Gulf Oil Corp - Cooling Water Pump House #491 - |
Girard Point |
PA |
| Martin And William H. Nixon Paper Company - |
Peneoyd |
PA |
| Gulf Research Development - |
Pittsburgh |
PA |
| Maxwell Colliery - |
Ashley |
PA |
| Hazelwood Plt Batt #2 - |
Pittsburgh |
PA |
| Mcconway And Forley Company - |
Pittsburgh |
PA |
| Jsta. #30 - S. S. Boiler Hse. - |
Pittsburgh |
PA |
| Mclean Newhall And Borie - |
Philadelphia |
PA |
| Koppers Company - Chemical Division - Penacol Plant - |
Petrolia |
PA |
| Merck Company, Inc. - |
West Point |
PA |
| Koppers Company - Plastics Division - |
Monaca |
PA |
| Midvale Company - |
Philadelphia |
PA |
| Laco Applicators, Inc. - Waren State Boiler House - |
Warren |
PA |
| Midwest Generation - |
Homer City |
PA |
| Lester Industrial Park - |
Lester |
PA |
| Mitchell, Fletcher And Company - |
Philadelphia |
PA |
| Marietta Metal Products Corp. - |
Philadelphia |
PA |
| Monongahela River Consolidated Coal And Coke Company - |
Pittsburgh |
PA |
| Mesta Machine Company - |
Homestead |
PA |
| Mount Alto Santarium - |
Mont Alto Park |
PA |
| Milliken Hospital Boiler Room - |
Pottsville |
PA |
| Mutual Chemical Division Of Allied Chemical And Dye - |
Philadelphia |
PA |
| National Electric Products Company - Manufacturing Facility - |
Ambridge |
PA |
| National Forge And Ordnance Company - |
Irvine |
PA |
| New Jr High School - |
Troy |
PA |
| National Tube Company - |
Chester |
PA |
| New York State Natural Gas - Sabinsville Compressor Station - |
Sabinsville |
PA |
| New Castle And Lowell Railway Company - |
Edinburg |
PA |
| Parkway Manor Elem School - |
Lehigh County |
PA |
| New York Shipbuilding Company - |
Philadelphia |
PA |
| Pennsylvania Industrial Chemical Co - Clairton Plant - |
Clairton |
PA |
| Noah Barlow - |
Philadelphia |
PA |
| Pennsylvania Power Light Co - Montour No 1 Power Plant - |
Washingtonville |
PA |
| Northwestern Pennsylvania Railway Company - |
Meadville |
PA |
| Pennzoil Co - Plant 1 - |
Rouseville |
PA |
| Number 9 Breaker - |
Pittston |
PA |
| Pittsburgh Activated Carbon Co - Dept 714 - |
Neville Island |
PA |
| Old Forge Collieries - |
Scranton |
PA |
| Power Atomic Power Station - |
Shippingport |
PA |
| Onderdonk Heating And Ventilating Company - |
Philadelphia |
PA |
| R. C. A. Victor Division - Bldgs. 2, 2a 2b - |
Lancaster |
PA |
| P.j. Ritter Company - |
Philadelphia |
PA |
| Rubel - |
Erie |
PA |
| Park Works - |
Pittsburgh |
PA |
| Skin Cancer Clinc - |
Mckees Rocks |
PA |
| Peach Bottom Nuclear Plant - |
Peach Bottom |
PA |
| Standard Oil Tank - Hull 601 - |
Philadelphia |
PA |
| Penn Public Service Company - |
Johnstown |
PA |
| Susquehanna University - Womens Mens Dormitories - |
Selinsgrove |
PA |
| Pennsylvania Institute For Instruction Of Blind - |
Overbrook |
PA |
| U. S. Steel Corporation - |
Ambridge |
PA |
| Pennsylvania Water Company - |
Wilkinsburg |
PA |
| U. S. Steel Corporation - Carrie Furnace - |
Rankin |
PA |
| Pennsylvania Coal Company - |
Dunmon |
PA |
| U. S. Steel Corporation - Duquesne Works - Steel Works - |
Duquesne |
PA |
| Pennsylvania Power And Light Company - |
Hauto |
PA |
| U. S. Steel Corporation - National Works - |
Mckeesport |
PA |
| Pennsylvania Railroad Company - |
Pittsburgh |
PA |
| Uniontown Senior High School - |
Uniontown |
PA |
| Pennsylvania Steel Company, Lebanon Furnace - |
Lebanon |
PA |
| Veterans Administration Hospital - |
Pittsburgh |
PA |
| Peoples Ice And Cold Storage Company - |
Mckeesport |
PA |
| West Penn Power Co - |
Reesedale |
PA |
| Peter F. Loftus - |
Pittsburgh |
PA |
| Westerly Parkway School - |
State College |
PA |
| Philadelphiadelphia And Reading Coal And Iron Company - |
Schuykill Haven |
PA |
| Westinghouse Electric Company - Atomic Power Division - Forest Hills - |
West Mifflin |
PA |
| Philadelphia Company - |
Canonsburg |
PA |
| Whitehall Cement Co - |
Cementon |
PA |
| Philadelphia Hospital - |
Philadelphia |
PA |
| Achenbach Butler, Inc. - |
Philadelphia |
PA |
| Phoenix Cement Company - |
Nazareth |
PA |
| International Paper Co. - |
Lock Haven |
PA |
| Pittsburgh Mckeesport And Westmoreland Railway Company - |
Mckeesport |
PA |
| Pittsburg Plate Glass Company - |
Pittsburgh |
PA |
| Pittsburgh Buffalo Company - |
Pittsburgh |
PA |
| Pittsburgh Mechanical Systems Incorporated - |
Pittsburgh |
PA |
| Pittsburgh Steel Company - |
Alicia |
PA |
| Pottstown Hospital - |
Pottstown |
PA |
| Projectile Plant Number 2 Army Gun Carriago Shop - |
South Bethlehem |
PA |
| Quint Corporation - |
Erie |
PA |
| Railway Steel Spring Company - |
Latrobe |
PA |
| Bergner And Engle Brewing Company - |
Philadelphia |
PA |
| Richard Heckscher And Sons - |
Swedeland |
PA |
| Robindale - |
Near Seward |
PA |
| Rockwell Industries - |
Reading |
PA |
| S. Morgan Smith Company - |
York |
PA |
| Savoia Property Management Company - |
Norwood |
PA |
| Schuylkill Railway Company - |
Girardville |
PA |
| Scranton Electric Company - |
Pittston |
PA |
| Seneca Colliery - |
Pittston Junction |
PA |
| Sharon Water Works Company - |
Sharon |
PA |
| Shenango Valley Water Company - |
Sharon |
PA |
| Simpson And Watkins - |
Mayfield |
PA |
| Sonneborn Division - |
Petrolia |
PA |
| Southside Works - |
Pittsburgh |
PA |
| American Olean Tile Company - |
Lansdale |
PA |
| Spring Brook Water Supply Company - |
Scranton |
PA |
| Bethlehem Steel Company - |
Edensburg |
PA |
| Stanbridge Apartments - |
Lansdale |
PA |
| Brockway Glass Company, Incorporated - |
Washington |
PA |
| Standard Tin Plate Company - |
Canonsburg |
PA |
| Chester Processing Company - |
Chester |
PA |
| Steelton And Highspire Rail Road Company - |
Bethlehem |
PA |
| Design Techniques - |
Stroudsburg |
PA |
| Sun Company, Incorporated - |
Oregon |
PA |
| E.w. Bliss Company - |
Midland |
PA |
| Susquehanna Collieries Company - |
Mt Carmel |
PA |
| Frankford Metal Treating - |
Philadelphia |
PA |
| Taylor-wharton Iron And Steel Company - |
Easton |
PA |
| Globe Eye Works - |
Philadelphia |
PA |
| Thomas F. Deegan - |
Philadelphia |
PA |
| Iberia Sugar Cooperative, Incorporated - |
New Iberia |
PA |
| Tionesta Valley Chemical Company - |
Mayburg |
PA |
| Johns Manville Products Company - |
Zeleinople |
PA |
| Turtle Creek Valley Water Company - |
Pittsburgh |
PA |
| Lukens Steel Corporation - |
Coatesville |
PA |
| Union Mills Paper Manufacturing Company - |
New Hope |
PA |
| Mcclaskey Co - |
Philadelphia |
PA |
| United Roofing And Manufacturing Company - |
Marcus Hook |
PA |
| Mutual Rendering Co - |
Philadelphia |
PA |
| United States Steel Company - |
Homestead |
PA |
| North American Refr Co - |
Womelsdorf |
PA |
| United States Asbestos - |
Manheim |
PA |
| Pensylvania Forge Corp - |
Tacony Philadelphia |
PA |
| Valley Traction Company - |
Bridgeport |
PA |
| Pittsburgh Plate Glass - |
Tipton |
PA |
| Viscose Company - |
Meadville |
PA |
| Reichard Coulston - |
Bethlehem |
PA |
| W.h. Piper And Company - |
Lilly |
PA |
| Schutte Koerting Compan - |
Cornwells Heights |
PA |
| Wabash Pittsburgh Terminal - |
Pittsburgh |
PA |
| Sunbeam Equipment Co - |
Meadville |
PA |
| Washington Hospital - |
Washington |
PA |
| Tyler School Of Fine Art - |
Philadelphia |
PA |
| Weightman Building - |
Philadelphia |
PA |
| United Steel Barrell - |
Philadelphia |
PA |
| West Pennsylvania Hospital - |
Pittsburgh |
PA |
| W Rose Inc - |
Sharon Hill |
PA |
| Western Pennsylvania Hospital - |
Pittsburgh |
PA |
| Wood, Alan, Steel Company - |
Conshohocken |
PA |
| Westinghouse Electric Company - |
South Philadephia |
PA |
| Allis Chalmers Manufacturing Company - |
York |
PA |
| Westmoreland Coal Company - |
Rillton |
PA |
| Beaumont Birch Company - |
Philadelphia |
PA |
| Wilbur Chocolate Company - |
Philadelphia |
PA |
| Borzillo Bakery - |
Norristown |
PA |
| Williamson Brothers Company - |
Philadelphia |
PA |
| Delaware Company Memorial Hospital - |
Drexel Hill |
PA |
| William Cramp And Sons Ship And Engine Building Company - |
Philadelphia |
PA |
| Firestone Tire And Rubber Company - |
Philadelphia |
PA |
| William Miller And Sons Company - |
Pittsburgh |
PA |
| J.d. Morrissey, Incorporated - |
Philadelphia |
PA |
| Yerks And Plumb - |
Frankford |
PA |
| Loos Dilworth - |
Philadelphia |
PA |
| Scott Foam - |
Eddystone |
PA |
| Miller Quarries Inc. - |
Rushland |
PA |
| Philadelphia Railroad - |
Reading |
PA |
| Philadelphia Dry Yeast - |
Philadelphia |
PA |
| Pennsylvania Steel Mill - |
Chester |
PA |
| Robert Wooler Company - |
Dresher |
PA |
| Greenville - |
Glenwood |
PA |
| S.s. Mobil Aero - |
Chester |
PA |
| Pennsylvania Railroad - |
Paoli |
PA |
| St. Mary's Laundry - |
Ardmore |
PA |
| Philadelphia Electric Company, Cromble Corporation - |
Phoenixville |
PA |
| Union Paving Company - |
Philadelphia |
PA |
| Philadelphia Electric Company - |
Schuykill |
PA |
| Wildman Jacquard Company - |
Norristown |
PA |
| National Tube Company (division National Works) - |
Mckeesport |
PA |
| Marquette Cement - |
Pittsburgh |
PA |
| Conrail (consiladated Railroad) - |
Altoona |
PA |
| Pennzoil - |
Rouseville |
PA |
| Sui Gas Purification Plant - |
Karachi |
PA |
| Southern Nitrogen Company - |
Port Wentworth |
PA |
| Shippingport Nuclear Power Station - |
Shippingport |
PA |
| Allen Sherman Hoff Co - |
Wynnewood |
PA |
| Adams Apple Products - |
Bendersville |
PA |
| Alpha Portland Cement Co - |
Easton |
PA |
| Sonoco Products Co (a/k/a Downingtown Paper) - |
Downingtown |
PA |
| Venezuela Gulf Refining C - |
Pittsburgh |
PA |
| Greencastle Packing Co. - |
Greencastle |
PA |
| C F Refractories - |
Port Kennedy |
PA |
| Penreco/pennsylvania Refining Co - |
Karns City |
PA |
| Westinghouse Electric Corp - |
Trafford |
PA |
| Pennsylvania Power Light Co - Martins - |
Martins Creek |
PA |
| Aluminum Company Of America - |
Pittsburgh |
PA |
| United Engineering Foundry Company - |
New Castle |
PA |
| Keystone Portland Cement - |
Philadelphia |
PA |
| Fort Miffin - Naval Ammunition Depot, Central Heating Plant - |
Philadelphia |
PA |
| Bickley Furnances Inc - |
Philadelphia |
PA |
| Reading Co - |
Philadelphia |
PA |
| Clarmont Engineering - |
Philadelphia |
PA |
| Pennzoil Company - |
Pittsburgh |
PA |
| Duer Spring And Mfg Co Div - |
Mckees Rocks |
PA |
| Pennsylvania Electric Company - Shawville Station - |
Shawville |
PA |
| Fibrous Glass Co - |
Carlisile |
PA |
| Eberle Tanning Company - |
Westfield |
PA |
| Globe Ticket Co - |
Philadelphia |
PA |
| Armstrong Cont Supply - |
Washington |
PA |
| Jessop Steel Co - |
Washington |
PA |
| East Penn Refractories - |
Reading |
PA |
| Manor Brick Crafters Inc - |
New Oxford |
PA |
| Kawecki Berylco - |
Hazelton |
PA |
| Neals Welding And Fabricating - |
Steelton |
PA |
| Penn Power Light - Montour Station - |
Washingtonville |
PA |
| Philadelphia Asbestos Cor - |
Philadelphia |
PA |
| Superior Combustion Industries - |
Emmaus |
PA |
| Porter H K - |
Philadelphia |
PA |
| Bayamon - |
Chester |
PA |
| Specialty Precision Wire - |
Mt Carmel |
PA |
| Mormactrade - |
Chester |
PA |
| U G I Corp - |
Hunlock Creek |
PA |
| Fort Mifflin - |
Philadelphia |
PA |
| Westinghouse Elec Corp - |
Trafford |
PA |
| American Machine And Foundry Co. - |
York |
PA |
| Oneida Mining - |
Homer City |
PA |
| Beaunit Fibers - |
Elizabethon |
PA |
| Edgewater Corp. - |
Pittsburgh |
PA |
| Burnham Boiler Company - |
Lancaster |
PA |
| U.s. Steel - Clairton Works - |
Clairton |
PA |
| Dravo Corp. - |
Neville Island |
PA |
| Armco - |
Ambridge |
PA |
| General Electric Company - |
Philadelphia |
PA |
| Westinghouse Air - |
Wilmerding |
PA |
| Hiram Swank's Sons - |
Irovone |
PA |
| Alleghany Ludlum Steel - |
Clairton |
PA |
| Jp Austin Associated Inc - |
Homestead |
PA |
| Capital Products - |
Mechanicsburg |
PA |
| Philadelphia Asbestos Corp. - |
Philadelphia |
PA |
| Exotic Metals - |
Ridgway |
PA |
| Pittsburgh Coal Corporation - |
Allegheny County |
PA |
| Hoffman Bros - |
Punxsutawney |
PA |
| Rust Engineering Company - |
Pittsburgh |
PA |
| Mcconway-torley - |
Pittsburgh |
PA |
| Van Brunt Company - |
Philadelphia |
PA |
| Pitts. Comm. Heating - |
Pittsburgh |
PA |
| Westinghouse Electric Company - |
Churchill |
PA |
| St Joe Smelting - |
Monaca |
PA |
| Owens Corning Fiberglass Corporation- |
Berwyn |
PA |
| Western Penn - |
Beaver City |
PA |
| Pennsylvania Power Light Co. - |
York Haven |
PA |
| Coplay Cement Manufacturing Company - |
Coplay |
PA |
| William H. Ottemiller Co. - |
York |
PA |
| Armstrong Cork Company - |
Lancaster |
PA |
| National Vulcanized Fibre - |
Kennett Square |
PA |
| Us Steel - Headquarter Building - Research Center - |
Monroeville |
PA |
| Ge - |
Erie |
PA |
| Overbrook Steam Heat Company - Woodbine Avenue Uplant Way - |
Philadelphia |
PA |
| Ppg Industries- |
Creighton |
PA |
| Aiken Medical Building - |
Pittsburgh |
PA |
| Us Steel, Homestead Works - |
Pittsburgh |
PA |
| Allied Services Handicapped - |
Scranton |
PA |
| Bruce Mansfield Power Plant - |
Shippingport |
PA |
| Pennsylvania Power Light - Montour Station - Unit #1 - |
Washingtonville |
PA |
| Pittsburgh Crucible Steel - |
Midland |
PA |
| Armstrong Cork Company, Tanks Hood - |
Pittsburgh |
PA |
| Abington High School - |
Abington |
PA |
| Gaf Corporation, 1139 Lehigh Ave. - |
Fullerton |
PA |
| Allenwood Steel - |
Conshohocken |
PA |
| Pennsylvania Electric Company - Seward Generating Station - |
Seward |
PA |
| Amjohn Incorporated - |
Carnegie |
PA |
| Philadelphia Electric Company - Richmond Generating Station - |
Philadelphia |
PA |
| Babcock Wilcox, Tubular Products Division - |
Koppel |
PA |
| U.s. Steel, Headquarter Building, Research Center - |
Monroeville |
PA |
| Berwick Forge Fabricating - |
Berwick |
PA |
| Allied Chemical Corporation - |
Bridesburg |
PA |
| Bundy Tubing - |
Coaldale |
PA |
| Lehigh Portland Cement - Fogelsville Plant - |
Allentown |
PA |
| Clarion Steel Works - |
Pittsburgh |
PA |
| Atlantic Refining - |
Philadelphia |
PA |
| Department Of Motor Vehicles Building - |
Harrisburg |
PA |
| Green Tweed - |
North Wales |
PA |
| Finnaren Haley Paint - |
Conshohocken |
PA |
| Uss Division Of Usx Corporation [ship] - |
Clairton |
PA |
| Goodyear - |
Grove City |
PA |
| Darby - |
Philadelphia |
PA |
| Holland Furnace - |
Delaware County |
PA |
| Navasota - |
Chester |
PA |
| Johns Manville - |
Pittsburgh |
PA |
| #5 Breaker - |
Dunmore |
PA |
| Lebanon City County Building - |
Lebanon |
PA |
| A. Garrison Foundry Company - |
Pittsburgh |
PA |
| Max Brockton Textile Company - |
Philadelphia |
PA |
| Ace Motor Company - |
Philadelphia |
PA |
| Nabisco - |
Philadelphia |
PA |
| Alcania Tin Plate Company - |
Avonmore |
PA |
| Oil City Glass Company - |
Oil City |
PA |
| Allegheny By-products Company - |
Glassport |
PA |
| Penn Optical - |
Reading |
PA |
| Allegheny Gas Company - |
Allegheny City |
PA |
| Phoenixville Steel - |
Phoenixville |
PA |
| Allentown Portland Cement Company - |
Allentown |
PA |
| R.c.a. - |
Lancaster |
PA |
| Altoona Car Shops - |
Altoona |
PA |
| Skf Industries - |
Philadelphia |
PA |
| American Sheet And Tin Plate Company - |
Pittsburgh |
PA |
| South Heights Power Station - |
Wireton |
PA |
| American Austin Car Company - |
Butler |
PA |
| Summit Park Apartments - |
Philadelphia |
PA |
| American Coke Company - |
Lambert |
PA |
| Us Steel - |
Hillsville |
PA |
| American S. W. Company - |
Allegheny |
PA |
| Western Metal Bed Company - |
Philadelphia |
PA |
| American Viscose Corporation - |
Marcus Hook |
PA |
| Barrett Chemical - |
Philadelphia |
PA |
| Applied Energy Services Corporation - |
Monaca |
PA |
| Pennsylvania Perlite Corporation - Manufacturing Plant - |
Bethlehem |
PA |
| Armstrong Cork Company, Linoleum Division - |
Lancaster |
PA |
| Tri Cash Carry Lumber Co - |
Beaver Falls |
PA |
| Audenried #4 Coll - |
Audenried |
PA |
| Anchor Supply Company - |
Carnegie |
PA |
| Baldwin Locomotive Works - |
Philadelphia |
PA |
| Neshaminy Nursing - |
Doylestown |
PA |
| Barrett Company - |
Philadelphia |
PA |
| Gram Asbestos Co - |
Erie |
PA |
| Beaver County Geriatric Center - |
Beaver |
PA |
| Trost Sheet Metal Co - |
Erie |
PA |
| Bellefonte Electric Company - |
Bellefonte |
PA |
| Flack Bros Inc - |
Harrisburg |
PA |
| Berwind White Coal Mining Company - |
Horatio |
PA |
| Thermal Engineering Inc - |
Lehigh Valley |
PA |
| Bethlehem Silk Company - |
Bethlehem |
PA |
| Z L Lumber Co - |
Mercer |
PA |
| Knouse Foods Cooperative, Incorporated - |
Orrtanna |
PA |
| C D Battery - |
Pennsburg |
PA |
| Bon Secours Holy Family Hospital - |
Altoona |
PA |
| Universal Insualtion Company - |
Philadelphia |
PA |
| Braeburn Alloy Steel Corporation - |
Braeburn |
PA |
| Mechanical Insulation Co - |
Plymouth Meeting |
PA |
| Brown Brothers Company - |
Philadelphia |
PA |
| Medal Distributing Co - |
Sharon |
PA |
| Buffalo Hardware Stove Company - |
Freemans Run |
PA |
| Baldwin-ehert-hill Inc - |
Valley Forge |
PA |
| C.h. Maslin And Sons - |
Philadelphia |
PA |
| Air Production Sales - |
Johnstown |
PA |
| Cambria Steel Company - |
Johnstown |
PA |
| American Water Works Electric Company - |
Pittsburgh |
PA |
| Carnegie Illinois Steel Corporation - |
Etna |
PA |
| Bradford Supply Company - |
Bradford |
PA |
| Carnegie Steel Company - |
New Castle |
PA |
| Columbia Water Company - |
Columbia |
PA |
| Carnegie Illinois Steel Corporation - |
Allegheny City |
PA |
| Dresser Manufacturing Division - |
Bradford |
PA |
| Central Works - |
Lebanon |
PA |
| Geo. F. Moilers Co. - |
Gettysburg |
PA |
| Chartiers Valley High School - |
Pittsburgh |
PA |
| Hydro-blast Corporation - |
Franklin |
PA |
| Chicago Pneumatic Tool Company - |
Pittsburgh |
PA |
| Lee Rubber Tire Company - |
Conshohocken |
PA |
| City Mill - |
Philadelphia |
PA |
| Mclanahan Corp. - |
Hollidaysburg |
PA |
| Clinton Iron And Steel Company - |
Pittsburgh |
PA |
| Olmstead Air Force Base - |
Middletown |
PA |
| Colonial Iron Company - |
Riddlesburg |
PA |
| Pennzoil Company - |
Rouseville |
PA |
| Commonwealth Title Insurance And Trust Company - |
Philadelphia |
PA |
| Pullman Standard Car Manufacturing Company - |
Butler |
PA |
| Consolidated Steel Wire Company - |
Rankin |
PA |
| Southern Natural Gas Company - |
Pittsburgh |
PA |
| Cowanshannock Coal And Coke Company - |
Yatesboro |
PA |
| U.s. Steel Corporation - |
Pittsburgh |
PA |
| Croft And Allen Company - |
Philadelphia |
PA |
| Westinghouse Electric Manufacturing Co. - |
Philadelphia |
PA |
| Cytemp Specialty Steel - |
Titusville |
PA |
| Amtrak Shops - |
Not Provided |
PA |
| Damascus Nickel Steel Company - |
Carnegie |
PA |
| Philadelphia Naval Shipyard - |
Uss New Jersey |
PA |
| Delaware And Hudson Company - |
Providence |
PA |
| Bethlehem Steel Corporation - |
Leetsdale |
PA |
| Delaware River Cordage Mill - |
Philadelphia |
PA |
| E.n. Hyde Heating Company - |
Pittsburgh |
PA |
| Diamond Alkali Company - |
Pittsburgh |
PA |
| Koppers Company - |
Bridgeville |
PA |
| Dolph Coal Company - |
Dunmore |
PA |
| National Plastics Company - |
Jeannette |
PA |
| Dravo Corporation - |
Pittsburgh |
PA |
| Reynolds Manufacturing Company - |
Avonmore |
PA |
| Duquesne Ice Company - |
Pittsburgh |
PA |
| United States Steel Corporation - |
Homestead |
PA |
| E. G. Brooke Iron Company - |
St. Peters |
PA |
| Wilson Park Apartments - |
Philadelphia |
PA |
| East End Electric Light Company - |
East Liberty |
PA |
| Edgewater Corp - |
Oakmont |
PA |
| Econolodge - |
Levittown |
PA |
| Millard Quarry - |
Annville |
PA |
| Edison Electric Light Company - |
York |
PA |
| Babcock Wilcox Koppel Works - |
Beaver Falls |
PA |
| Eliza Furnace Plant - |
Pittsburgh |
PA |
| Bennett Aspen - |
Philadelphia |
PA |
| Empire Iron And Steel Company - |
Catasauqua |
PA |
| Ford Motor Co. - |
Chester |
PA |
| Erie Railroad Company - |
Dunmore |
PA |
| Jones Laughlin Steel Company - |
Aliquippa |
PA |
| Ewen Breaker - |
Pittston |
PA |
| Masontown Brewing Co. - |
Masontown |
PA |
| F.r. Dravo And Company - |
Pittsburgh |
PA |
| Pennsylvania Railroad - |
Pitcairn |
PA |
| Fayette R. Plumb, Incorporated - |
Philadelphia |
PA |
| Public Service Gas Co - |
Philadelphia |
PA |
| Firth-sterling Steel Company - |
Mckeesport |
PA |
| Thos. Wolstenholme Sons Co. - |
Philadelphia |
PA |
| Ft. Pitt Brewing Company - |
Sharpsburg |
PA |
| Wheeling Pittsburgh Steel Products - |
Allenport |
PA |
| Franklin Manufacturing Company - |
Stoneboro |
PA |
| Philadelphia Electric Co., Crombie Station - |
|
PA |
| G.b. Markle And Company - |
Jeololo |
PA |
| Bethlehem Steel Corporation - |
Bethlehem |
PA |
| General Electric Company - |
Bridgeville |
PA |
| General Supply Co. - |
Coplay |
PA |
| George S. Harris Sons - |
Philadelphia |
PA |
| Pennsylvania Power Light - |
Strawberry Ridge |
PA |
| Girard Coal Company - |
Mt Carmel |
PA |
| Westinghouse Electric Corp. - |
Derry |
PA |
| Glen Summit Hotel And Land Company - |
Glen Summit |
PA |
| Stackpole Carbon Co. - |
St Mary's |
PA |
| Greenville Steel Car Company - |
Greenville |
PA |
| Kennedy, Ebensburg Center - |
Ebensbug |
PA |
| H.j. Heinz And Company - |
Pittsburgh |
PA |
| A T T - |
Allentown |
PA |
| H.c. Frick Coke Company - |
Monmouth |
PA |
| Arco Refinery - |
Philadelphia |
PA |
| H.e. Colliery - |
Bennett |
PA |
| Bok Technical High School - 8th Mifflin Streets - |
Philadelphia |
PA |
| Hanover Power Company - |
Hanover |
PA |
| Churchville Elementary - |
Holland |
PA |
| Harrison, Havemeyer Company, Franklin Refinery - |
Philadelphia |
PA |
| Delaware County Hospital - |
Delaware County |
PA |
| Heidelberg Colliery - |
Avoca |
PA |
| Exton Mall - |
Exton |
PA |
| Hershey Chocolate Company - |
Bernville |
PA |
| Georgia Pacific Pulp Paper - |
Reading |
PA |
| Holmesburg, Tacony And Frankford Electric Railway Company - |
Tacony |
PA |
| Honeywell - |
Fort Washington |
PA |
| Honeywell, Incorporated - |
T Smethport |
PA |
| Kaiser Metal - |
Bristol |
PA |
| Hudson Coal Company - |
Olyphant |
PA |
| Letterkenny Depot - |
Letterkenny |
PA |
| Imperial Leather Company - |
Allegheny |
PA |
| Morris School - 26th Thompson - |
Philadelphia |
PA |
| Inland Container Corporation - |
Philadelphia |
PA |
| Park City Shops - Routet 30 Bypass - |
Lancaster |
PA |
| Isabella Furnace Company - |
Etna |
PA |
| Philadelphia Electric Company - Eddystone Generating Station - |
Eddystone |
PA |
| J.k. Wright And Company - |
Philadelphia |
PA |
| Pittsburgh Powerhouse - |
Pittsburgh |
PA |
| J.g. Brill Company - |
Philadelphia |
PA |
| Saint Agnes Hospital - |
Philadelphia |
PA |
| James P. Wood Heating Company - |
Philadelphia |
PA |
| Social Security Building - 8th Arch Streets - |
Philadelphia |
PA |
| J.b. Ellison And Sons - |
Philadelphia |
PA |
| Temple University - Life Bio-sciences Building - |
Philadelphia |
PA |
| Joel J. Bailey And Company - |
Philadelphia |
PA |
| University Of Pennsylvania - Liberal Arts - |
Philadelphia |
PA |
| John Wood Manufacturing Company - |
Conshohocken |
PA |
| Us Courthouse - |
Philadelphia |
PA |
| Jones And Laughlin Steel Corporation - |
Aliquippa |
PA |
| Southeast Water Pollution Control Plant - |
Philadelphia |
PA |
| Kelly And Jones Company - |
Greensburg |
PA |
| A T T Co. - |
Reading |
PA |
| Keystone Engineering Company - |
Pittsburgh |
PA |
| Aliquippa Works - Station 27 N. M. Pipe Shop - |
Aliquippa |
PA |
| Koppel Plant - |
Beaver Falls |
PA |
| Allegheny Refining Company - |
Verona |
PA |
| Lackawanna Iron And Steel Company - |
Scranton |
PA |
| Argyl Mfg Co - Midway Between Windgap Pen Argyl - |
Pen Argyl |
PA |
| Lancaster County Railway And Light Company - |
Lancaster |
PA |
| Atlantic Refining Co - Fourth Floor Rear - |
Philadelphia |
PA |
| Leader Publishing Company - |
Pittsburgh |
PA |
| Atlantic Refining Co - Rt. Breeze Refinery - North Yard - 34th. St. Gate - |
Philadelphia |
PA |
| Lehigh And Wilkes Barre Coal Company - |
South Wilkesbarre |
PA |
| Baker Elem. School - |
Altoona |
PA |
| Lehigh Coal And Navagation Company - |
Nesquehoning |
PA |
| Bethlehem Steel Company - Bensol Plant - Coke Oven Division - |
Bethlehem |
PA |
| Lehigh Portland Cement Company - |
New Castle |
PA |
| Bethlehem Steel Company - Truck Stop 242 - |
Johnstown |
PA |
| Lehigh Valley Coal Company - |
Centralia |
PA |
| Caterpillar Tractor Company - |
York |
PA |
| Lehighs Northampton Gas Electric Company - |
Catasauqua |
PA |
| Clay Mill Works - No .3 Works - |
Clearfield |
PA |
| Liberty Powder Company - |
Mt. Braddock |
PA |
| Continental Rubber Works - |
Erie |
PA |
| Liquid Carbonic Acid Manufacturing Company - |
Pittsburgh |
PA |
| Duquesne Light Co. - Brunot Island Generating Station - Storeroom - |
Pittsburgh |
PA |
| Lucent Technologoes - |
Reading |
PA |
| Erie Lackawanna Railroad - Pennsylvania State Police - Team Track - Oblates Of St. Joseph - |
Kingston |
PA |
| M.l. Bayard And Company - |
Philadelphia |
PA |
| Frankford Arsenal - Fourth Floor Rear - |
Philadelphia |
PA |
| Mammoth Plant - |
Mammoth Station |
PA |
| Gulf Oil Corp - Cooling Water Pump House #491 - |
Philadelphia |
PA |
| Maryland Coal Company - |
Hazelton |
PA |
| H. H. Heinz Lab. - |
Pittsburgh |
PA |
| Maxwell Colliery, #20 - |
Ashley |
PA |
| Hercules Powder Company - Higgins Plant - |
Philadelphia |
PA |
| Mcconway And Torley Corporation - |
Pittsburgh |
PA |
| Junior High School - |
Aliquippa |
PA |
| Medusa Portland Cement Company - |
York |
PA |
| Koppers Company - Chemicals Dyestuffs Div - |
Petrolia |
PA |
| Merck Company, Inc. - |
Riverside Borough |
PA |
| Koppers Company - Plastics Division - Kobuta Plant - |
Kobuta |
PA |
| Midvale Heppenstall Company - |
Eddystone |
PA |
| Laco Mcmullen Co - |
Erie |
PA |
| Milbon Manufacturing Company - |
Milbon |
PA |
| Letort Elem. School - |
Millersville |
PA |
| Model Laundry And Dry Cleaning Company - |
Jeannette |
PA |
| Mary Street Project - |
Kingston |
PA |
| Monongahela Street Railway Company - |
Pittsburgh |
PA |
| Metropolitan Edison Co - Eyler Station Storehouse - |
West Reading |
PA |
| Mount Holly Springs - |
Cumberland County |
PA |
| Minnepolis Honeywell Reg. Co. - Browns Instrument Division - |
Philadelphia |
PA |
| N. And G. Taylor Company - |
Philadelphia |
PA |
| National Forge And Ordnance Co. - |
Irvin |
PA |
| National Forge Company - |
Irvine |
PA |
| New Office Bldg. - |
Lancaster |
PA |
| National Tube Company, Monongahela Furnaces - |
Mckeesport |
PA |
| Nicholson File Company - |
Philadelphia |
PA |
| New Castle Electric Company - |
New Castle |
PA |
| Penn Argyl High School - |
Pen Argyl |
PA |
| New York Wilkins Company Engineers - |
Pittsburgh |
PA |
| Pennsylvania Industrial Chemical Co - Clairton Plant Storeroom - |
Clairton |
PA |
| Norfolk Southern Corporation - |
Hollidaysburg |
PA |
| Pennsylvania Power Light Co - Montour Steam Elec Station Unit 1 - |
Strawberry Ridge |
PA |
| Nottingham Colliery - |
Plymouth |
PA |
| Pennzoil Co - Plant 2 - |
Oil City |
PA |
| Number 9 Collier - |
Pettston |
PA |
| Pittsburgh Activated Carbon Co - Dept 848 - Neville Island - |
Pittsburgh |
PA |
| Old Fourth Ward School - |
Pittsburgh |
PA |
| Publicker Industries, Inc. - Chemical Plant - Receiving Station 1 - |
Philadelphia |
PA |
| Oneida Colliery - |
Oneida |
PA |
| Reese Metal Products Corp - |
Lancaster |
PA |
| P. Mcgraw Wool Company - |
Pittsburgh |
PA |
| S. Bern Ohio Company - |
Rouseville |
PA |
| Parkersburg Iron And Steel Company - |
Pittsburgh |
PA |
| Skin Cancer Clinic - |
Mckees Rocks |
PA |
| Pencoyd Iron Works - |
Pencoyd |
PA |
| State Correctional Institution - |
Camp Hill |
PA |
| Penn Public Service Corporation - |
Johnstown |
PA |
| Temple Covenant Of Peace - |
Easton |
PA |
| Pennsylvania Light, Heat And Power Company - |
Allegheny |
PA |
| U. S. Steel Corporation - |
Berwyn |
PA |
| Pennsylvania State Hospital For Tuberculosis - |
Hamburg |
PA |
| U. S. Steel Corporation - Carrie Furnaces - |
Rankin |
PA |
| Pennsylvania Coal Company - |
Dunnon |
PA |
| U. S. Steel Corporation - Edgar Thomson Works - |
Braddock |
PA |
| Pennsylvania Power And Light Company - |
River Station |
PA |
| U. S. Steel Corporation - Patt. #10, 11, 12 - |
Clairton |
PA |
| Pennsylvania Railroad Company - |
Pottsville |
PA |
| United Church Of Christ - |
Bethlehem |
PA |
| Pennsylvania Sugar Company - |
Philadelphia |
PA |
| Veterans Hospital - |
Pittsburgh |
PA |
| Peoples Ice Cold Storage Company - |
Mckeesport |
PA |
| West Penn Power Co - Armstrong Power Station - |
Kittanning |
PA |
| Peters And Company - |
Mckeesport |
PA |
| Western Electric Co. - Repair Facility - |
King Of Prussia |
PA |
| Philadelphia And Reading Railroad Company - |
Philadelphia |
PA |
| Westinghouse Electro Co - Westinghouse Astronuclear Laboratory - |
Large |
PA |
| Philadelphia Company - |
Pittsburgh |
PA |
| Whitehall Cement Co. - |
Cementon |
PA |
| Philadelphia Hospital For The Insane - |
Philadelphia |
PA |
| Allegheny Energy - |
Courtney |
PA |
| Phoenix Glass Company - |
Pittsburgh |
PA |
| Jones Laughlin Steel Corporation - |
Pittsburgh |
PA |
| Pittsbugh Thermal Limited Partnership - |
Pittsburgh |
PA |
| Pittsburgh Provision And Packing Company - |
Pittsburgh |
PA |
| Pittsburgh Buffalo Company - |
Ellsworth |
PA |
| Pittsburgh Milling Company - |
Allegheny |
PA |
| Pittsburgh Steel Foundry Company - |
Pittsburgh |
PA |
| Pottstown Iron Company - |
Pottstown |
PA |
| Prospect Colliery - |
Wilkes Barre |
PA |
| R.d. Wood - |
Philadelphia |
PA |
| Rainey Wood Coke Company - |
Swedeland |
PA |
| Reisinger Prather Company - |
Pittsburgh |
PA |
| Richmond Station - |
Philadelphia |
PA |
| Robinson And Rea Manufacturing Company - |
Pittsburgh |
PA |
| Rohm And Haas Company - |
Bristol |
PA |
| S.s. Marvin Branch - |
Pittsburgh |
PA |
| Saxton Iron Company - |
Saxton |
PA |
| Schuylkill Station, Christian St. - |
Philadelphia |
PA |
| Scranton Gas And Water Company - |
Scranton |
PA |
| Senior High School Building - |
Philadelphia |
PA |
| Sharpless And Sons - |
Philadelphia |
PA |
| Sheridan Supply Company - |
Newmanstown |
PA |
| Simpson And Watkins - |
Peckville |
PA |
| South Chester Tube Company - |
Chester |
PA |
| A. Moe Company - |
Philadelphia |
PA |
| Southwark Foundry And Machine Company - |
Philadelphia |
PA |
| Asphalt Paving Company - |
Norristown |
PA |
| Spring Mill Manor - |
Ivyland |
PA |
| Bethlehem Steel Company - |
Ebensburg |
PA |
| Standard Chair Company - |
Union City |
PA |
| Brockway Glass Company, Incorporated - |
Brockway |
PA |
| Standard Underground Cable Company - |
Pittsburgh |
PA |
| Clarks Summit State Hospital - |
Clarks Summit |
PA |
| Stegmaier Brewing Company - |
Wilkes Barre |
PA |
| Deval Corporation - |
Philadelphia |
PA |
| Sun Oil Company - |
Philadelphia |
PA |
| Eastern Foundry Company - |
Boyertown |
PA |
| Susquehanna Silk Mills - |
Jersey Shore |
PA |
| Franklin Building Supply - |
Nashville |
PA |
| Tech Food Products Company - |
Pittsburgh |
PA |
| Goldsteins Sons, Incorporated - |
Philadelphia |
PA |
| Thomas H. Grigg - |
Philadelphia |
PA |
| Industrial Equipment Company - |
Scranton |
PA |
| Torrance State Hospital - |
Torrance |
PA |
| Jones Laughlin Steel Company - |
Aliquippa |
PA |
| Tyler Charcoal Iron Tin Mills - |
Washington |
PA |
| Lupton Mfg Co - |
Philadelphia |
PA |
| Union Spring Manufacturing Company - |
Pittsburgh |
PA |
| Mcconway Torley Corp - |
Pittsburgh |
PA |
| United States Asbestos Company - |
Manheim |
PA |
| National Cricible Co - |
Philadelphia |
PA |
| United States Steel Corporation - |
Clairton |
PA |
| Nuclear Mat Equip Corp - |
Apollo |
PA |
| United States Asbestos, Division Of Raybestos Manhattan, Incorporated - |
Manheim |
PA |
| Philadelphia Burner Serv - |
Philadelphia |
PA |
| Valley Traction Company, Lemoyne - |
Cumberland County |
PA |
| Pittsburgh Plate Glass - |
Springdale |
PA |
| Tasty Baking Company Incorporated - |
Philadelphia |
PA |
| Reirlay State Hospital - |
Hemlock Creek |
PA |
| W.h. Piper And Company - |
Philadelphia |
PA |
| Schuykill Forge Co - |
Cornwells Heights |
PA |
| Wager And Cox - |
Bridgeport |
PA |
| Superior Drawn Steel Co - |
Monaca |
PA |
| Washington Ice Company - |
Washington |
PA |
| U S Aluminum Corp - |
Marietta |
PA |
| Weightman Estate - |
Philadelphia |
PA |
| Univ Atlas Cem Div Of Uss Corp - |
Universal |
PA |
| West Pennsylvania Power Company - |
Connellsville |
PA |
| Warner Co - |
De Vault |
PA |
| Western Pennsylvania Hospital For Insane - |
Dixmont |
PA |
| Woodings Verona Steel Works - |
Verona |
PA |
| Westinghouse Electric Company - |
Youngwood |
PA |
| Alloy Steel - |
Southampton |
PA |
| Westmoreland County Home For The Destitute - |
Greensburg |
PA |
| Bers Corporation - |
Philadelphia |
PA |
| Wilkes Barre Anthracite Coal Company - |
Wilkes Barre |
PA |
| Bryton Chemical Company - |
Trainer |
PA |
| Williamsport Free School Of Mechanical Trades - |
Media |
PA |
| Dewitt P. Henry Candy Company - |
Philadelphia |
PA |
| William F. Forepaugh Jr. And Bro. - |
Philadelphia |
PA |
| Fischer Porter - |
Warminster |
PA |
| William Penn High School - |
Philadelphia |
PA |
| J.t. Bennett Company - |
Philadelphia |
PA |
| Yewdall And Jones Brothers - |
Philadelphia |
PA |
| Loren's Heat Treating - |
Philadelphia |
PA |
| United States Steel - |
Ellwood City |
PA |
| National Molasses - |
Philadelphia |
PA |
| British Petroleum Company - |
Trainer |
PA |
| Philadelphia Electric - |
Chester |
PA |
| Usx Steel Mill - |
Clairton |
PA |
| Ruth Bennett Project - |
Chester |
PA |
| Alloy Rod - |
Hanover |
PA |
| S.s. Olympic - |
Chester |
PA |
| Allied Signal, Incorporated - |
Philadelphia |
PA |
| Sun Shipbuilding Company - |
Chester |
PA |
| Boston Ohio Railroad Company - |
Pittsburgh |
PA |
| Union Paving Company - |
Springhouse |
PA |
| Philadelphia Electric Company - |
Southwark |
PA |
| Willson Products Division - |
Reading |
PA |
| Naval Dry Dock - |
Philadelphia |
PA |
| Mccarter Iron Works - |
Morristown |
PA |
| Jl Steel - |
Ambridge |
PA |
| Philadelphia Electric Co. - Richmond Station - |
Philadelphia |
PA |
| Sui Gas Purification Plant - |
Sui |
PA |
| Sun Oil - |
Toledo |
PA |
| Warren Power Plant (kinzua Dam) - |
Warren |
PA |
| International Boiler Works Co - |
Stroudsburg |
PA |
| Bethlehem Steel Corporation - Lehigh Division - Bethlehem Plant - |
Bethlehem |
PA |
| American Dredging Company - |
Philadelphia |
PA |
| Arnomink Steam Heat Company - |
Drexel Hill |
PA |
| Canonsburg Pottery Compan - |
Canonsburg |
PA |
| Hannastown Plant/jamison Coal And Coke - |
Hannastown |
PA |
| Chevron Asphalt Co - |
Springdale |
PA |
| Franklin Marshall College - |
Lancaster |
PA |
| Dynamet Inc - |
Washington |
PA |
| Pittsburgh Lake Erie Railroad - |
Mckees Rock |
PA |
| Lehigh Portland Cement - |
Allentown |
PA |
| Pennsylvania Electric Company - Conemaugh Station - |
New Florence |
PA |
| Philadelphia College Of Arts - |
Philadelphia |
PA |
| General Electric Company - |
Philadelphia |
PA |
| Blind Floral Co - |
Pittsburgh |
PA |
| Temple University - Medical School - |
Philadelphia |
PA |
| Clermont Engineering Co I - |
Philadelphia |
PA |
| Shenango Inc. (a/k/a Davison Coke & Iron; Pittsburgh Coke Iron) - |
Pittsburgh |
PA |
| Duquesne Light Co - |
Elrama |
PA |
| Duquesne Light Company - Shippingport #1 - |
Shippingport |
PA |
| Floor Chemical Corp - |
Philadelphia |
PA |
| Westfield Tanning Company - |
Westfield |
PA |
| Graham Jean - |
Malvern |
PA |
| Asg Industries - |
Jeannette |
PA |
| Johnston The Florist - |
Irwin |
PA |
| Fazekas Frank - |
Easton |
PA |
| Maritime Supply Co - |
Philadelphia |
PA |
| Kennedy Van Saun - |
Danville |
PA |
| New A And B Foundry Inc - |
Connellsville |
PA |
| Pennsylvania Power Light - |
York Haven |
PA |
| Philadelphia College Of A - |
Philadelphia |
PA |
| Teledyne-columbia-summerhill - |
Scottsdale |
PA |
| Ppg Industires Inc - |
Meadvill |
PA |
| Black River - |
Chester |
PA |
| Specialty Rings Products - |
Cornwells Hgts |
PA |
| Uss New Orleans - |
Philadelphia |
PA |
| Union Electric Steel Corporation - |
Carnegie |
PA |
| Sun Shipbuilding Drydock Co. - |
Chester |
PA |
| Westinghouse Elec Corp - |
Derry |
PA |
| Anchor Hocking Glass Corp. - |
Lancaster |
PA |
| Pennwest Fuels - |
Clymer |
PA |
| Beaver Valley Power Station Unit - |
Shippingport |
PA |
| Freeport Brick Co - |
Freeport |
PA |
| Byberry State Hospital - |
Philadelphia |
PA |
| Vasco - |
Latrobe |
PA |
| Duquesne Light Company - |
Shippingport |
PA |
| Babcock Wilcox - |
Koppel |
PA |
| General Refractories - |
Sproul |
PA |
| Corning - |
Bradford |
PA |
| Hk Porter Company - |
Pittsburgh |
PA |
| Alleghany Ludlum Steel - |
Leechburg |
PA |
| Koppers Company - |
Oil City |
PA |
| Chem-clay Corporation - |
Carnegie |
PA |
| Philadelphia Electric - |
Falls Twp |
PA |
| Ferro Corporation - |
Bigler |
PA |
| Pittsburgh Corning Corporation - |
Pittsburgh |
PA |
| Homestead Industries - |
Coraopolis |
PA |
| Rymet Corporation - |
King Of Prussia |
PA |
| Milton Manufacturing Co. - |
Milton |
PA |
| W. P. Duckworth - |
Lansdowne |
PA |
| Pittsburgh Commercial - |
Pittsburgh |
PA |
| Westinghouse Electric Company - |
Cheswick |
PA |
| Standard Steel - |
Burnham |
PA |
| Oxychem - |
Berwyn |
PA |
| Western Penn - |
Pittsburgh |
PA |
| Red Lion High School - |
Red Lion |
PA |
| General Electric Company - |
Courtney |
PA |
| Alloy Rods Company And Chemetron Corporation - |
Hanover |
PA |
| Armstrong Cork Company - Building 34-e - |
Lancaster |
PA |
| Glatfelter P H Co. - |
Spring Grove |
PA |
| Conemaugh Power Station - Unit #1 - |
New Florence |
PA |
| Stefanak Company - |
Farrell |
PA |
| Philadelphia Electric Company - |
Philadelphia |
PA |
| Jones Laughlin Steel Corporation, Southside Works - |
Pittsburgh |
PA |
| American Radiator Standard Sanitary Corporation - Bessemer Building - |
Pittsburgh |
PA |
| Usg Sun Shipbuilding Dry Dock - |
Chester |
PA |
| Charmin Paper Company - Outdoor Tank - |
Scranton |
PA |
| Babcock Wilcox - |
Beaver |
PA |
| Pennsylvania Power Light - Montour Station - Unit #2 - |
Washingtonville |
PA |
| Pennsylvania Electric Company - Homer City Generating Station - |
Homer City |
PA |
| Armstrong Power Station - |
Reesedale |
PA |
| Abington Hospital - |
Abington |
PA |
| General Electric Company - Apparatus Pittsburgh Service Center - |
West Mifflin |
PA |
| Allied Chemical Corporation - |
Philadelphia |
PA |
| Pennsylvania Electric Company - Shawville Plant - Units 3 And 4 - |
Shawville |
PA |
| Amstar Sugar Factory - |
Philadelphia |
PA |
| Philadelphia Electric Company - Schuylkill Generating Station - |
Philadelphia |
PA |
| Backos Johns Lumberyard - |
Pitcairn |
PA |
| U.s. Steel, Homestead Works - |
Homestead |
PA |
| Bethlehem Steel - |
Lebanon |
PA |
| Arco Atlantic Refinery - |
Philadelphia |
PA |
| Bustleton Elementary - |
Philadelphia |
PA |
| Letort Elementary School - |
Millersville |
PA |
| Columbia Plumbing Supply House - |
Philadelphia |
PA |
| Peco - Cromby Power Plant - |
Phoenixville |
PA |
| Domino Sugar Refinery - |
Philadelphia |
PA |
| Mccann Shields Paint Co. - |
Pittsburgh |
PA |
| Fitzpatrick Sheetmetal - |
Dubois |
PA |
| Uss Division Of Usx Corporation [ship] - |
Homestead |
PA |
| Grant Towers - |
Duquesne |
PA |
| Day - |
Philadelphia |
PA |
| Holy Redeemer Hospital - |
Philadelphia |
PA |
| Nicholson - |
Philadelphia |
PA |
| Jones Laughlin Steel - |
Braddock |
PA |
| #5 Shaft - |
Dunmore |
PA |
| Ledwig Huntel Company - |
Sharon Hill |
PA |
| A.j. Cameron Company - |
Philadelphia |
PA |
| Mccarter Iron - |
Norristown |
PA |
| Acme Tea Company - |
Philadelphia |
PA |
| National Heat Power - |
Philadelphia |
PA |
| Alcoa Technical Center - |
Merwin |
PA |
| Owens-illinois - |
Brookville |
PA |
| Allegheny City Electric Light Company - |
Allegheny |
PA |
| Pennsylvania Fruit - |
Philadelphia |
PA |
| Allegheny General Hospital - |
Pittsburgh |
PA |
| Pico Chemical - |
Clairton |
PA |
| Allentown Rapid Service Ice Company - |
Allentown |
PA |
| R.c.a. - |
Dunmore |
PA |
| Altoona High School - |
Altoona |
PA |
| Sacred Heart Hospital - |
Allentown |
PA |
| American Sheet And Tin Plate Company - |
Monessen |
PA |
| Spector Freight System - |
Philadelphia |
PA |
| American Axe And Tool Company - |
Beaver Falls |
PA |
| Susquehanna Power Station - |
Shawville |
PA |
| American Cyanamid Company - |
Bridgeville |
PA |
| Union Steel - |
Pittsburgh |
PA |
| American Sheet Tin Plate Company - |
Demmler |
PA |
| Westinghouse - |
Pittsburgh |
PA |
| American Viscose Corporation - |
Meadville |
PA |
| Duquesne Light Co. - Brunot Island Generating Station - |
Pittsburgh |
PA |
| Apollo Iron Steel Company - |
Templeton |
PA |
| Certainteed - |
Valley Forge |
PA |
| Art Loom Corporation - |
Philadelphia |
PA |
| Black Burn Russell Co - |
Bedford |
PA |
| August Wagner Breweries, Incorporated - |
Pittsburgh |
PA |
| W W Armstrong Inc - |
Carnegie |
PA |
| Baldwin Locomotive Works - |
Burnham |
PA |
| Eureka Div Of Litton Ind - |
Dunmore |
PA |
| Barrett Company - |
Bethlehem |
PA |
| Gree Inc - |
Erie |
PA |
| Beaver County Home And Hospital - |
Beaver |
PA |
| United Atkinson Inc - |
Erie |
PA |
| Bellefonte Gas Company - |
Bellefonte |
PA |
| The U G I Corp - |
Harrisburg |
PA |
| Berwind White Coal Mining Company - |
Lindsey |
PA |
| Delaware Insulation Co - |
Lester |
PA |
| Bethlehem Steel Company - |
Bethlehem |
PA |
| Orr Sembauer Co - |
Middletown |
PA |
| Black And Germer - |
Erie |
PA |
| Armstrong Contracting Supply Corporation - |
Philadelphia |
PA |
| Booster Boiler House Saucon Plant - |
South Bethlehem |
PA |
| William A Mc Dowell Jr Co - |
Philadelphia |
PA |
| Braeburn Steel Company - |
Braeburn |
PA |
| Baldwin-ehert-hill Inc - |
Port Kennedy |
PA |
| Brown Instrument Company - |
Philadelphia |
PA |
| Sharon Steel Co - |
Sharon |
PA |
| Buhl Steel Company - |
Sharon |
PA |
| Valley Forge State Park - |
Valley Forge |
PA |
| C.e. Monday And Company - |
Philadelphia |
PA |
| Air Products, Inc. - |
Emmaus |
PA |
| Cambria Steel Company - |
Philadelphia |
PA |
| American Welding Company - |
Carbondale |
PA |
| Carnegie Brothers And Company Limited - |
Pittsburgh |
PA |
| Bradford Supply Company - |
Lawton Lease |
PA |
| Carnegie Steel Company - |
Pittsburgh |
PA |
| Consolidated Rail Corp. - |
Philadelphia |
PA |
| Carrie Furnace Company - |
Rankin |
PA |
| Duquesne Light Co.- Frank R. Phillips Power Station - |
Cheswick |
PA |
| Centralia Colliery - |
Centralia |
PA |
| Glassine Paper Co. - |
West Conshohocken |
PA |
| Charles St. Suppes - |
Johnstown |
PA |
| Hydro-blast Corporation - |
Danville |
PA |
| Chicago Pneumatic Tool Company - |
Franklin |
PA |
| Lehigh Engineering Company - |
Dunmore |
PA |
| City Of Pittsburgh Brilliant Pumping Station - |
Pittsburgh |
PA |
| Merck Company, Inc. - |
Riverside |
PA |
| Coal And Coke By-products Company - |
Pittsburgh |
PA |
| Ple Railroad - |
Mckees Rock |
PA |
| Colonial #1 Plant - |
Smock Station |
PA |
| People Natural Gas - |
White Valley |
PA |
| Commonwealth Trust Company - |
Pittsburgh |
PA |
| Pure Oil Company - |
Marcus Hook |
PA |
| Consolidated Traction Company - |
Pittsburgh |
PA |
| Stackpole Carbon - |
St Mary's |
PA |
| Coxe Brothers And Company - |
Deringer |
PA |
| Union Carbide Carbon Chemical Corporation- |
Duquesne |
PA |
| Cromby Generating Station - |
Cromby |
PA |
| Westinghouse Electric Manufacturing Co. - |
Trafford |
PA |
| D.b. Fuller - |
Philadelphia |
PA |
| Bethlehem Steel - |
Bethlehem |
PA |
| Daniel J. Keating - |
Philadelphia |
PA |
| Philadelphia Naval Shipyard - |
Uss Valley Forge |
PA |
| Delaware And Hudson Company - |
Scranton |
PA |
| Bethlehem Steel Corporation - |
Steelton |
PA |
| Delaware River Steel Company - |
Chester |
PA |
| Edgewater Corporation - |
Oakmont |
PA |
| Diamond Drill Machine Company - |
Birdsboro |
PA |
| Korhumel Steel Aluminum Company-mill Strip Division - |
New Castle |
PA |
| Dolph Coal Company - |
Scranton |
PA |
| National Portland Cement - |
Bethlehem |
PA |
| Dravo Doyle Company - |
Pittsburgh |
PA |
| Robinson Ventilating Company - |
Zelienople |
PA |
| Duquesne Light Company - |
Rankin |
PA |
| United States Steel Corporation - |
Mckees Rocks |
PA |
| E.c. Knight And Company - |
Philadelphia |
PA |
| Sinclair Refining Company - |
Marcus Hook |
PA |
| East End Electric Light Company - |
Pittsburgh |
PA |
| Electralloy Corp - |
Oil City |
PA |
| Edensburg Coal Company - |
Colver |
PA |
| National Portland Cement Co - |
Bethlehem/brodhead |
PA |
| Edison Electric Light Company - |
Philadelphia |
PA |
| Bethlehem Steel - |
Ambridge |
PA |
| Elizabeth Steel Magee Hospital - |
Pittsburgh |
PA |
| Bureau Of Mines - |
Bruceton |
PA |
| Empire Mills - |
Philadelphia |
PA |
| Ford Pitt Hotel - |
Pittsburg |
PA |
| Erie Railroad Company - |
Susquehanna |
PA |
| J. H. C. K. Eagle - |
Shamokin |
PA |
| Excelsior Coal Company - |
Excelsior |
PA |
| Mesta Machine Co. - |
Pittsburg/homestead |
PA |
| F.c. Roberts - |
Philadelphia |
PA |
| Pennsylvania Railroad - |
Shire Oaks |
PA |
| Federal Container Company - |
Philadelphia |
PA |
| Pumping Station-landers Point - |
Landers Point |
PA |
| Firth-sterling Steel Company - |
Demmler |
PA |
| Underwood Coal Co - |
Scranton |
PA |
| Ft. Pitt Hotel - |
Pittsburgh |
PA |
| Whitehall Cement Co. - |
Annville |
PA |
| Franklin Quality Refining Company - |
Franklin |
PA |
| Philadelphia Electric Co., Delaware Sta. - |
|
PA |
| G.a.f. Corporation Industrial Prod Division - |
Erie |
PA |
| Bethlehem Steel Corporation - |
Johnstown |
PA |
| General Electric Company - |
New Kensington |
PA |
| H.r. Curry Co. - |
Sharpsburg |
PA |
| George W. Blabon Company - |
Nicetown, Philadelphia |
PA |
| Pennsylvania Power Light - |
Washingtonville |
PA |
| Girard Coal Company - |
Pittston |
PA |
| Westinghouse Electric Corp. - |
East Pittsburgh |
PA |
| Glen Willow Ice Manufacturing Company, Manayunk - |
Philadelphia |
PA |
| Titan Metal Manufacturing Co. - |
Bellefonte |
PA |
| Griffin Enamuel Brick Company - |
Peukiomen |
PA |
| Keystone, Ebensburg Center - |
Ebensbug |
PA |
| H.k. Cummings - |
Philadelphia |
PA |
| A T T - |
Pottstown |
PA |
| H.c. Frick Coke Company - |
Mt. Pleasant |
PA |
| Armstrong Power Station - |
Kittanning |
PA |
| H.h. Robertson Company - |
Pittsburgh |
PA |
| Bp Oil - |
Marcus Hook |
PA |
| Happenstall Company - |
Pittsburgh |
PA |
| Civic Center - 34th Street - |
Philadelphia |
PA |
| Harry A. Prock Cabinet Company - |
Glenside |
PA |
| Delaware County Prison - |
Thornton |
PA |
| Heintz Division Of Kelsey Hayes Company - |
Philadelphia |
PA |
| Federal Office Building Courthouse - 6th Arch Streets - |
Philadelphia |
PA |
| Hershey Chocolate Usa - |
Hershey |
PA |
| Germantown Hospital - |
Philadelphia |
PA |
| Home Electric Light And Steam Heating Company - |
Tyrone |
PA |
| Hopkinson House Apartments - |
Philadelphia |
PA |
| Hood, Bonbright And Company - |
Philadelphia |
PA |
| Kane School - 26th Jefferson - |
Philadelphia |
PA |
| Hudson Coal Company - |
Carbondale |
PA |
| Limerick Nuclear Power Plant - |
Limerick |
PA |
| Independent Brewing Company - |
Allegheny |
PA |
| Mrs Paul`s Frozen Foods - Tabor Road - |
Philadelphia |
PA |
| International Motor Company - |
Allentown |
PA |
| Park City Stores - |
Park City |
PA |
| Isimbel Brothers Stable - |
Philadelphia |
PA |
| Philadelphia Electric - Barbadoes Station - |
West Norriton |
PA |
| J. Mundell And Company - |
Philadelphia |
PA |
| Point Marion Powerhouse - |
Point Marion |
PA |
| J.g. White And Company - |
Palo Alto |
PA |
| Saint Ignatius Church - |
Yardley |
PA |
| James Wolfenden - |
Lock Haven |
PA |
| Solis-cohen - |
Philadelphia |
PA |
| J.e. Patterson And Company - |
Pittston |
PA |
| Temple University - Social Science Building - |
Philadelphia |
PA |
| John A. Rigg - |
Reading |
PA |
| University Of Pennsylvania - Maloney Building - |
Philadelphia |
PA |
| John Yewdall Keystone Mills - |
Philadelphia |
PA |
| Us Courthouse Office Building - |
Philadelphia |
PA |
| Joseph S. Finch And Company - |
Schenley |
PA |
| Southwest Water Pollution Control Plant - |
Philadelphia |
PA |
| Kelly And Jones Company - |
Pittsburgh |
PA |
| Abbotts Dairies Inc - |
Belleville |
PA |
| Keystone Plantation - |
Wyoming |
PA |
| Aliquippa Works - Track Station Nbr 103 - |
Aliquippa |
PA |
| Koppers Company - |
Pittsburgh |
PA |
| Allentown Hospital - Boiler House - |
Allentown |
PA |
| Lackawanna And Wyoming Valley Company - |
Scranton |
PA |
| Argyl Mfg Co - Midway Between Windgap Pen Argyl - Rfg 1 - |
Pen Argyl |
PA |
| Lancaster Water Works - |
Lancaster |
PA |
| Atlantic Refining Co - Location 1 - |
Philadelphia |
PA |
| League Island - |
Philadelphia |
PA |
| Atlantic Refining Co - Schuylkill And Lanier - |
Philadelphia |
PA |
| Lehigh And Wilkes Barre Coal Company - |
Sugar Notch |
PA |
| Allied Chemical Dye Corporation - Arrett Division - |
Philadelphia |
PA |
| Lehigh Coal And Navagation Company - |
Hauto |
PA |
| Bethlehem Steel Company - Boiler House #2 - |
Bethlehem |
PA |
| Lehigh Portland Cement Company - |
Ormrod |
PA |
| Bethlehem Steel Company - West End Yards - Supply Department - |
Steelton |
PA |
| Lehigh Valley Coal Company - |
Hazleton |
PA |
| Caterpillar Tractor Company - Bldg. B - |
East York |
PA |
| Leicester Continental Mills Company - |
Germantown |
PA |
| Clearview Elem. School - |
Bethlehem |
PA |
| Lickdale Iron Company - |
Lickdale |
PA |
| Corning Glass Works - |
Bradford |
PA |
| Lochiel Rolling Mill Company - |
Harrisburg |
PA |
| Duquesne Light Co - Cheswick Power Station - |
Springdale |
PA |
| Lucy Furn - |
Pittsburgh |
PA |
| Erie Lackawanna Railroad - Public Siding - |
Kingston |
PA |
| M.h. Pickering - |
Pittsburgh |
PA |
| Franklin Sugar Company - |
Philadelphia |
PA |
| Manayunk - |
Philadelphia |
PA |
| Gulf Oil Corp - Gate #24 - |
Girard Point |
PA |
| Maryland Coal Company - |
Philadelphia |
PA |
| H. J. Heinz Co - Mechanical Stock Room - |
Pittsburgh |
PA |
| Mc Cullough Iron Company - |
Philadelphia |
PA |
| Hershey State Police Training Barri - |
Hershey |
PA |
| Mccracken Stark And Company - |
Philadelphia |
PA |
| Kaiser Job - |
Butler |
PA |
| Megargee Paper Company - |
Edgely |
PA |
| Koppers Company - Coal Hydrogenation Pilot Plant - |
Verona |
PA |
| Merck, Sharp And Dohme - |
West Point |
PA |
| Koppers Company - Tar Chem Div - |
Oil City |
PA |
| Midvale Heppenstall Company - |
Philadelphia |
PA |
| L-air Liquide - Walnut Street Gate - |
Johnstown |
PA |
| Mill Creek Coal Company - |
New Boston |
PA |
| Lilly Washington School - |
Lilly |
PA |
| Mohawk Valley Brewing Company - |
Philadelphia |
PA |
| Mary Wood College - New Boiler Room - |
Scranton |
PA |
| Monongahela Light And Power Company - |
Rankin |
PA |
| Metropolitan Edison Co - Portland Generating Station - |
Portland |
PA |
| Mount Lebanous Ice Company - |
Mt Lebanon |
PA |
| Minotte Brothers Company - |
Pittsburgh |
PA |
| N.r.s. Yewdall - |
Philadelphia |
PA |
| National Gypsum Company - Boiler House - |
New Columbia |
PA |
| National Galvanizing Works - |
Mckeesport |
PA |
| New Pellet Plant - |
Cornwall |
PA |
| National Tube Works Company - |
Mckeesport |
PA |
| North Huntington Twp High School - |
Irwin |
PA |
| New Castle Light, Heat, And Power Company - |
New Castle |
PA |
| Penn Dixie Cement Corporation - Plant No 9 - |
West Winfield |
PA |
| Newburn Glass Company - |
Royersford |
PA |
| Pennsylvania Industrial Chemical Co - Gate 1 - |
Chester |
PA |
| Norristown Magnesia And Asbestos Company - |
Norristown |
PA |
| Pennsylvania Power Light Co - Montour Steam Elec Station Unit 2 - |
Strawberry Ridge |
PA |
| Number 6 Bolliery - |
Pittston |
PA |
| Pennzoil Refining Co. - Plant No. 1 - |
Rouseville |
PA |
| Number 9 Colliery Near - |
Pittston |
PA |
| Pittsburgh Coke Chemical Co. - |
Mckees Rocks |
PA |
| Old Meadow Works - |
Pittsburgh |
PA |
| Punxsutawney Elem. School - Punxsutawney Secondary School - |
Punxsutawney |
PA |
| Open Hearth Division - |
Homestead |
PA |
| Reiners - |
Pittsburgh |
PA |
| Pacific Railroad Western Lines - |
Conway |
PA |
| Skf - Altoona Plant - Addition - |
Altoona |
PA |
| Parkesburg Iron Company - |
Parkesburg |
PA |
| Smoketown Elementary School - East Lampeter Township - |
Lancaster |
PA |
| Pencoyd Iron Works - |
Philadelphia |
PA |
| Stores Department - |
Beaver Falls |
PA |
| Penn Public Service Corporation - |
Seward |
PA |
| Theodore E. Moser - |
Philadelphia |
PA |
| Pennsylvania Lines, West Of Pittsburgh, Allegheny Shops - |
Allegheny |
PA |
| U. S. Steel Corporation - |
Clairton |
PA |
| Pennsalt Chemicals Corporation - |
King Of Prussia |
PA |
| U. S. Steel Corporation - Clairton By Product Coke Works - |
Clairton |
PA |
| Pennsylvania Coal Company - |
Mt. Lookout |
PA |
| U. S. Steel Corporation - Edgar Thomson Works - Braddock, Penna. - |
Bessemer |
PA |
| Pennsylvania Power Company - |
Ellwood City |
PA |
| U. S. Steel Corporation - R. G. Peiliker - Applied Research Lab. - |
Monroeville |
PA |
| Pennsylvania Railroad Company - |
Reading |
PA |
| United Gas Improvement Company - Gas Plant - |
Steelton |
PA |
| Pennsylvania Sugar Division, National Sugar Refining Company - |
Philadelphia |
PA |
| Villanova University - New Law School Bldg. - |
Villanova |
PA |
| Peoples Ice Light And Storage Company - |
Mckeesport |
PA |
| West Penn Power Co - Armstrong Power Station - |
Reesedale |
PA |
| Peters Packing Company - |
Mckeesport |
PA |
| Western Electric Company - Allentown Works - Building 21 - |
Allentown |
PA |
| Philadelphia And Reading Railroad Company - |
Mahanoy Plane |
PA |
| Westinghouse Electric Corp. - Sharon Transformer Plant - Boiler House - |
Sharon |
PA |
| Philadelphia Company Of Pittsburgh - |
Pittsburgh |
PA |
| Wilkes Barre Steam Heat Company - Power Plant - |
Wilkes Barre |
PA |
| Philadelphia Museum - |
Philadelphia |
PA |
| Allegheny Energy - |
Kittanning |
PA |
| Phoenix Glass Company - |
Monaca |
PA |
| Knoll Products, Inc. - |
Hanover Township |
PA |
| Pittsburgh And Birmingham Traction Company - |
Pittsburgh |
PA |
| Pittsburgh Railways Company - |
Pittsburgh |
PA |
| Pittsburgh Buffalo Company - |
Burgettstown |
PA |
| Pittsburgh Milling Company - |
Pittsburgh |
PA |
| Pittsburgh Steel Foundry - |
Glassport |
PA |
| Pottsville Iron And Steel Company - |
Pottsville |
PA |
| Providence Hospital - |
Beaver Falls |
PA |
| R. Hecksher And Sons - |
Philadelphia |
PA |
| Raystown Water Power Company - |
Huntington |
PA |
| Reliance Cement Company - |
Coplay |
PA |
| Richmond Works - |
Philadelphia |
PA |
| Robinson And Wallace - |
Philadelphia |
PA |
| Rohm And Haas Company, West Washington Square - |
Philadelphia |
PA |
| S. Ewart And Company - |
Pittsburgh |
PA |
| Sayre Electric Company - |
Sayre |
PA |
| Schuylkill Station, Christy St. - |
Philadelphia |
PA |
| Scranton High School - |
Scranton |
PA |
| Scranton Lace Curtain Company - |
Scranton |
PA |
| Sharpsville Furnace Company - |
Sharpsville |
PA |
| Sherwood Refining Company - |
Warren |
PA |
| Simpson And Watkins - |
Wyoming |
PA |
| South Hills High School - |
Pittsburgh |
PA |
| Acme Hardesty Industries - |
Philadelphia |
PA |
| Southwark Mills Company - |
Philadelphia |
PA |
| Atlantic Metals Corporation - |
Philadelphia |
PA |
| Springdale Power Station - |
Springdale |
PA |
| Bethlehem Steel Company - |
Lebanon |
PA |
| Standard Ice Manufacturing Company - |
Philadelphia |
PA |
| Bryton Chemical Company - |
Trainor |
PA |
| Stanley G. Flagg And Company - |
Pottstown |
PA |
| Columbia Metals Company - |
Columbia |
PA |
| Sterling Silk Glove Company - |
Bangor |
PA |
| Dixie Cup - |
Easton |
PA |
| Sun Refinery And Marketing - |
Philadelphia |
PA |
| Eastern Foundry Company - |
Hovertown |
PA |
| Susquehanna Silk Mills - |
Sunbury |
PA |
| Freeport Brick Company - |
Freeport |
PA |
| Teledyne, Incorporated - |
Waynesboro |
PA |
| Green Bag Cement - |
Neville Island |
PA |
| Thomas Iron Company - |
Hellerstown |
PA |
| Inland Products, Incorporated - |
Pitsburgh |
PA |
| Tosco Refining Company - |
Trainer |
PA |
| Jones Laughlin Steel Company - |
Pittsburgh |
PA |
| Tyler Tube And Pipe Company - |
Washington |
PA |
| M Miller Spring Mfg Co - |
Pittsburgh |
PA |
| Union Spring Manufacturing Company - |
New Kensington |
PA |
| Meata Machine Co - |
New Castle |
PA |
| United States Asbestos, Division Of Raybestos Manhattan Incorporated - |
Manheim |
PA |
| National Crucible Company - |
Philadelphia |
PA |
| United States Steel Corporation - |
Neville Island |
PA |
| Orr Sembower Inc - |
Reading |
PA |
| Us Navy Yard - |
Philadelphia |
PA |
| Philadelphia Electric Cor - |
Philadelphia |
PA |
| Van Horn Ely - |
New Brighton |
PA |
| Pittsburgh Plate Glass - |
Creighton |
PA |
| Vulcan Detinning Company - |
Neville Island |
PA |
| Republic Steel Corporation - |
West Newton |
PA |
| W.j. Hollis - |
Reading |
PA |
| Schuylkill Forge Co - |
Philadelphia |
PA |
| Walker And Kepler - |
Philadelphia |
PA |
| Superior Zinc Corp - |
Bristol |
PA |
| Washington Steel And Ordinance Company - |
Uniontown |
PA |
| U S Bureau Of Mines - |
Schuykill Haven |
PA |
| Weinberg Louis And Marion - |
Philadelphia |
PA |
| Universal Atlas Cement - |
Universal |
PA |
| West Pennsylvania Power Company, Mitchell Power Plant - |
Courtney |
PA |
| Westinghouse Air Brake - |
Wilmerding |
PA |
| Western State Psychiatric Hospital - |
Pittsburgh |
PA |
| Woodings Verona Tool Works - |
Verona |
PA |
| Westinghouse Electric Corp - |
Derry |
PA |
| Aluminum Smelting Corporation - |
Philadelphia |
PA |
| Westmoreland Paper Company - |
West Newton |
PA |
| Berwin White Coal Company - |
Windber |
PA |
| Wilkes Barre Company - |
Wilkes Barre |
PA |
| Buick Motor Division - |
Philadelphia |
PA |
| Wilputte Coke Oven, Division Of Allied Chemical Corporation - |
Philadelphia |
PA |
| Doehler-jarvis Division, National Lead Industries, Incorporated - |
Pottstown |
PA |
| William Krause And Sons Cement Company - |
Martins Creek |
PA |
| Freebrook Corporation - |
Kittanning |
PA |
| William Whitaker And Sons - |
Philadelphia |
PA |
| J.w. Ivory Company - |
Philadelphia |
PA |
| York Corporation - |
York |
PA |
| Lorenz Sons - |
Philadelphia |
PA |
| United States Steel - |
Fairless Hills |
PA |
| New Jersey Zinc Company - |
Friedensville |
PA |
| Charmi - |
Tuntannock |
PA |
| Philadelphia Rust - |
Philadelphia |
PA |
| Boston Ohio Railroad Company - |
Connellsville |
PA |
| S.f. Whitman - |
Philadelphia |
PA |
| Gpu Nuclear Corporation, Three Mile Island Unit - |
Harrisburg |
PA |
| S.s. Olympic Rock - |
Philadelphia |
PA |
| Boston Ohio Railroad Company - |
Philadelphia |
PA |
| Superintendent U.s. Mint - |
Philadelphia |
PA |
| Carnegie Illinois Steel Corporation - |
Pittsburgh |
PA |
| Valley Camp Coal Company - |
Poland |
PA |
| Standard Oil - |
Steelton |
PA |
| Allegheny County Workhouse - |
Blawnox |
PA |
| Pittsburgh And Lake Erie Railroad - |
Glassport |
PA |
| Medusa Portland Cement - |
Wampun |
PA |
| Ltv Steel - |
Monaca |
PA |
| Pittsburgh Coal Co - |
Allegheny |
PA |
| Water And Power Development Authority, Upper Sind Plant - |
Sukkur |
PA |
| Sun Oil Co. Refinery - |
Marcus Hook |
PA |
| Williamsburg Generating Station - |
Williamsburg |
PA |
| Glen Gery Shade Brick - |
Shillington |
PA |
| Magee Carpet Co. - |
Bloomsburg |
PA |
| Atlantic Refining Co - |
Philadelphia |
PA |
| Philadelphia Electric - Cromby Station - |
E. Pikeland Township |
PA |
| Columbia Boiler Co Of Pot - |
Pottstown |
PA |
| Pennsylvania Power Light Co. - Cedar Steam Electric Station - |
Harrisburg |
PA |
| Combustion Equipment Serv - |
Quakertown |
PA |
| Radio Corp Of America/rca - |
Lancaster |
PA |
| Hahn Louis Sons - |
Pittsburgh |
PA |
| Kelsey Hayes Wheel Company - |
Mckeesport |
PA |
| E Keeler Co - |
Williamsport |
PA |
| Meyer Zausner Inc - |
New Holland |
PA |
| Bristol Steel Treating Co - |
Bristol |
PA |
| Gulf Oil Corporation - |
Philadelphia |
PA |
| Blue Flame Burners Inc - |
Pittsburgh |
PA |
| The American Pulley Company - |
Philadelphia |
PA |
| Colonial Metals Company - |
Columbia |
PA |
| St. Francis Hospital - |
Pittsburgh |
PA |
| Duquesne Light Co - |
Pittsburgh |
PA |
| P.h. Glatfelter - |
Spring Grove |
PA |
| Florig Equipment Co - |
Conshohocken |
PA |
| Muskin Mfg Co (a/k/a Wilkes Barre Lace Mfg) - |
Wilkes Barre |
PA |
| Gramham Jean - |
Malvern |
PA |
| Atlantic Oil Heat - |
White Hall |
PA |
| Jones And Laughlin Steel - |
Aliquippa |
PA |
| Flinn Dreffein - |
York |
PA |
| Mcconovay And Torley Corp - |
Pittsburg |
PA |
| Kennedy Van Saun C/o Warner - |
Devault |
PA |
| No Am Refr - |
Curwensville |
PA |
| Philadelphia Electric - |
Philadelphia |
PA |
| Philadelphia Gas Works - |
Philadelphia |
PA |
| Thermal Research Engineering - |
Conshohocken |
PA |
| Ppg Industries - |
Tipton |
PA |
| Chocura - |
Philadelphia |
PA |
| Speciatly Rings Products - |
Cornwells Hgts |
PA |
| Uss Newport - |
Philadelphia |
PA |
| Union Spring And Mfg Co - |
New Kenslington |
PA |
| Alcoa - |
Pittsburgh |
PA |
| Westinghouse Electric Co - |
Lestar |
PA |
| Ap Green - |
Philadelphia |
PA |
| Ppg Industries - |
Meadville |
PA |
| Bethlehem Corporation - |
Easton |
PA |
| Harry Roman - |
Pittsburgh |
PA |
| Car Mar Welding Service - |
Berwick |
PA |
| Vulcan Mold - |
Latrobe |
PA |
| E Keeler - |
Williamsport |
PA |
| M.w. Kellogg - |
Williamsport |
PA |
| General Refractories Co. - |
Philadelphia |
PA |
| Westinghouse - |
Blairsville |
PA |
| Hoetetters Supply Company - |
York |
PA |
| Allis Chalmers - |
York |
PA |
| Lebanon Plumbing Supply Co - |
Lebanon |
PA |
| Chem-clay Corporation - |
Pittsburgh |
PA |
| Philadelphia Electric - |
Phoenixville |
PA |
| Ferro Corporation - |
Erie |
PA |
| Polymer Corporation - |
Reading |
PA |
| Imagining Systems - |
Latrobe |
PA |
| Selas Corporation Of America - |
Dresher |
PA |
| National Roll Division - |
Avonmore |
PA |
| Combustion Engineering Inc. - |
Port Kennedy |
PA |
| Pittsburgh Heat - |
Pittsburgh |
PA |
| Westinghouse Electric Company - |
Monroeville |
PA |
| Standard Steel - |
Lewiston |
PA |
| P Le Railroad - |
Beaver Falls |
PA |
| Western Penn - |
Shippingport |
PA |
| State Correctional Institute - |
Camp Hill |
PA |
| Mitchell Power Station - Washington County - |
Courtney |
PA |
| Alloy Rods Company And Chemetron Corporation - |
York |
PA |
| Armstrong Cork Company - Buildings 403-408 - |
Lancaster |
PA |
| Excelsior Brass - |
Reading |
PA |
| Conemaugh Power Station - Unit #2 - |
New Florence |
PA |
| Anvil International - |
Columbia |
PA |
| Philadelphia Electric Company - Edison Steam Plant - 9th Sansom - |
Philadelphia |
PA |
| Sun Shipbuilding Dry Dock Company, Sunship/pennship - |
Chester |
PA |
| Armstrong Cork Company - Pitt Plant - 24th Street - |
Pittsburgh |
PA |
| American Can Company - |
Fairless Hills |
PA |
| Pennsylvania Electric Company - Seward Station - Westmoreland County - |
Seward |
PA |
| Babcock Wilcox - |
Wallace Run Plant |
PA |
| Merck Sharpe Dohme - Building 65 - Cat Home - |
West Point |
PA |
| Masontown Bridge, Hatfield Power Station - |
Monongahela |
PA |
| Atlantic Richfield Company, Barge Loading Facilities - |
Philadelphia |
PA |
| A.c. S. - |
Lancaster |
PA |
| Gratz Gillespie School, 17th Luzerne - |
Philadelphia |
PA |
| Allied Chemical - |
Marcus Hook |
PA |
| Pennsylvania Power Light, Brunner Island Plant - |
York Haven |
PA |
| Anthony Compola Plumbing - |
Philadelphia |
PA |
| Philadelphia General Hospital, Medical Examiners Laboratory - |
Philadelphia |
PA |
| Badenhauser - |
Cornwell Heights |
PA |
| U.s. Steel, Neville Island - |
Pittsburgh |
PA |
| Bethlehem Steel Mill - |
Pittsburgh |
PA |
| Edgecomb Steel - |
Philadelphia |
PA |
| Byberry State Mental Hospital - |
Philadelphia |
PA |
| Liberty Bell Race Track - |
Philadelphia |
PA |
| Cominsky Warehouse - |
Windber |
PA |
| Charmin Paper - |
Meshoppen |
PA |
| Draper Yost, Incorporated - |
Tamaqua |
PA |
| Monsey Products - |
Kimberton |
PA |
| Food Fair - |
Philadelphia |
PA |
| Alert - |
Chester |
PA |
| Great Lakes Steel - |
Pittsburgh |
PA |
| Delta Ecuador - |
Chester |
PA |
| Hopeman Borthers - |
Chester |
PA |
| Oklahoma City - |
Philadelphia |
PA |
| Jones Laughlin Steel - |
Philadelphia |
PA |
| #8 Colliery - |
Dunmore |
PA |
| Lee Hospital - |
Johnstown |
PA |
| A.j. Haws Sons Limited - |
Johnstown |
PA |
| Mcgraw-edison - |
Canonsburg |
PA |
| Adams Mine - |
Irwin |
PA |
| National Standard - |
Mount Joy |
PA |
| Alcoa Technical Center - |
Alcoa Center |
PA |
| Ppg Industries - |
Pittsburgh |
PA |
| Allegheny County Home - |
Woodville |
PA |
| Pennsylvania Range Boiler - |
Philadelphia |
PA |
| Allegheny Heating Company - |
Allegheny |
PA |
| Pillsbury Plant - |
East Greenville |
PA |
| Allentown-bethlehem Gas Company - |
Allentown |
PA |
| R.c.a. Building - |
Sayre |
PA |
| Altoona School District, Altoona High School - |
Altoona |
PA |
| Schaefer Brewery - |
Philadelphia |
PA |
| American Sheet Steel Company - |
Mckeesport |
PA |
| Springdale Powerhouse - |
Springdale |
PA |
| American Axe And Tool Company - |
Glassport |
PA |
| Sweet's Steel - |
Williamsport |
PA |
| American Dyewood Company - |
Chester |
PA |
| Uniontown Demolition - |
Point Marion |
PA |
| American Sheet Tin Plate Company - |
New Castle |
PA |
| Westinghouse Electric Company - Bettis Atomic Power Laboratory - |
East Pittsburgh |
PA |
| American Warming Ventilating Company - |
Pittsburgh |
PA |
| Pennsylvania Railroad - |
Reading |
PA |
| Arbuckle And Company - |
Pittsburgh |
PA |
| Penn Rilton Company - |
West Elizabeth |
PA |
| Asbestos And Magnesia Manufacturing Company - |
Port Kennedy |
PA |
| Wise Foods - |
Berwick |
PA |
| Aurora Furnace - |
Wrightsville |
PA |
| Baird Insulation Company - |
Chambersburg |
PA |
| Baldwin Locomotive Works - |
Eddystone |
PA |
| Rca Plant - |
Dunmore |
PA |
| Barrett Company - |
Frankford |
PA |
| Heyl Physicians Supply Co - |
Erie |
PA |
| Beaver County Light Company - |
Fallston |
PA |
| United Industrial Supply Co - |
Erie |
PA |
| Bellevue Stratford Hotel Company - |
Philadelphia |
PA |
| Trans-lux Theatre Colonial - |
Harrisburg |
PA |
| Berwind White Coal Mining Company - |
Dubois |
PA |
| Mechanical Insulation Co - |
Lester |
PA |
| Bethlehem Steel Corporation - |
Lebanon |
PA |
| Three Mile Island Nuclear Station - |
Middletown |
PA |
| Blackwood Colliery - |
Blackwood |
PA |
| Brand Insulation - |
Philadelphia |
PA |
| Borg Warner Corporation - |
York |
PA |
| Wm A Mc Dowell Jr Co - |
Philadelphia |
PA |
| Brandley Smith - |
Philadelphia |
PA |
| Refactory Insulation Corp - |
Port Kennedy |
PA |
| Browning, King Company Building - |
Philadelphia |
PA |
| Z L Lumber Co - |
Sharpsburg |
PA |
| Bulletin Building - |
Philadelphia |
PA |
| King Keystone - |
Warren |
PA |
| C.h. Bradley And Company - |
Pittsburgh |
PA |
| Air Products, Inc. - |
Pittsburgh |
PA |
| Cambria Steel Company - |
Marianna |
PA |
| Arbogast Bastlan Company - |
Allentown |
PA |
| Carnegie Illinois Steel Corporation - |
Pencoyd |
PA |
| Brockway Glass Company - |
Brockway |
PA |
| Carnegie Steel Company - |
Rankin |
PA |
| Consumers Gas Company - |
Reading |
PA |
| Carrie Furnace Company - |
Pittsburgh |
PA |
| Duquesne Light Company - |
Pittsburgh |
PA |
| Chamberlain Coal Company - |
Port Carbon |
PA |
| Glatfelter Ph Co. - |
Spring Grove |
PA |
| Charles D. Kaier Company Limited - |
Mahoney City |
PA |
| Hydro-blast Corporation - |
Burnham |
PA |
| Chickies Iron Company - |
Chickies |
PA |
| Lewis Foundry And Machine - |
Groveton |
PA |
| City Of Pittsburgh Department Of Charities - |
Marshalsea |
PA |
| Metropolitan Edison Co.- Portland Generating Station - |
Portland |
PA |
| Coal Brook Mine - |
Carbondale |
PA |
| Pangborn Corporation - |
Homestead |
PA |
| Colonial Steel Company - |
Pittsburgh |
PA |
| Petroleum Iron Works - |
Sharon |
PA |
| Conemaugh Valley Memorial Hospital - |
Johnstown |
PA |
| Quaker State Oil Refinery - |
Emlenton |
PA |
| Consolidation Coal Company - |
Jenner |
PA |
| Sun Refining Marketing Co. - |
Philadelphia |
PA |
| Coxe Brothers And Company - |
Drifton |
PA |
| Union Steel Casting - |
Pittsburgh |
PA |
| Cross Creek Coal Company - |
Drifton |
PA |
| Westinghouse Electric Manufacturing Co. - |
East Pittsburgh |
PA |
| D. Lutz Son Brewing Company - |
Allegheny |
PA |
| Certainteed - |
Ambler |
PA |
| Danlevy Packing Company - |
East Liberty |
PA |
| Philadelphia Naval Shipyard - |
Uss Washington |
PA |
| Delaware And Hudson Company - |
Olyphant |
PA |
| Bethlehem Steel Corporation - Homer Research Labs - |
Bethlehem |
PA |
| Delaware Station - |
Philadelphia |
PA |
| Extrusion Die Makers - |
Murrysville |
PA |
| Diamond Mines - |
Scranton |
PA |
| Kutz Engineering - |
Pittsburgh |
PA |
| Dolph Coal Company - |
Winton |
PA |
| National Steel Service Center, Inc. - |
New Castle |
PA |
| Drexel Institute - |
Philadelphia |
PA |
| Rochez Brothers Supply Company - |
Braddock |
PA |
| Duquesne Light Company - |
Springdale |
PA |
| United States Steel Corporation - |
Braddock |
PA |
| E.l. Rothschild Building - |
Philadelphia |
PA |
| Gulf Oil Refinery - |
Philadelphia |
PA |
| East Lehigh Colliery - |
Tamaqua |
PA |
| Fairless Works Us Steel - |
Fairless |
PA |
| Edensburg Power - |
Ebensburg |
PA |
| Oil City Glass Co Division Natl Can - |
Oil City |
PA |
| Edison International - |
Homer City |
PA |
| Koppel Steel Company - |
Ambridge |
PA |
| Elk Tanning Company - |
Coudersport |
PA |
| Congoleum Co. - |
Marcus Hook |
PA |
| Empire Reeves Steel Corporation - |
Pittsburgh |
PA |
| Frank Sedar Dept. Store - |
Philadelphia |
PA |
| Erie Works - |
Erie |
PA |
| John Wanamakers Dept. Store - |
Philadelphia |
PA |
| Excelsior Steam Planning Mill - |
Mauch Chunk |
PA |
| Morrellsville Colliery - |
Nantyglo |
PA |
| F.f. Geisler And Company - |
Pittsburgh |
PA |
| Pennsylvania Railroad, Freight Station - |
Harrisburg |
PA |
| Federal Enameling And Stamping Company - |
Mckees Rocks |
PA |
| Quaker City Rubber Co - |
Wissinoming |
PA |
| Flannery Bolt Company - |
Bridgeville |
PA |
| Union Spring Mfg. Co. - |
New Kensington |
PA |
| Ft. Pitt Malleable Grey Iron Company - |
Mckees Rocks |
PA |
| William Cramp And Sons - |
Philadelphia |
PA |
| Franklin Sugar Refining Company - |
Philadelphia |
PA |
| Beryllium Corp - |
Hazelton |
PA |
| Garland Brothers - |
Pittsburgh |
PA |
| Bethlehem Steel Corporation - |
Steelton |
PA |
| General Electric Company, Lamp Department - |
Bridgeville |
PA |
| Hostetter Supply Co. - |
York |
PA |
| George A. Fuller Contracting Company - |
Philadelphia |
PA |
| Pennsylvania Power Co. - |
Shippingport |
PA |
| Girard Estate - |
Philadelphia |
PA |
| Wheeling Pittsburgh Steel - |
Monessen |
PA |
| Glen Alden Coal Company, Maxwell Colliery - |
Scranton |
PA |
| Williamsgrove Clay Products - |
Bigler |
PA |
| Griswold Worsted Company - |
Darby |
PA |
| Lebanon, Wernersville State Hospital - |
Wernersville |
PA |
| H.k. Porter And Company - |
Pittsburgh |
PA |
| A T T - |
Wayne |
PA |
| H.c. Frick Coke Company - |
United Sta |
PA |
| Athos Steel Mill - |
Philadelphia |
PA |
| H.h. Robertson Company - |
Ambridge |
PA |
| Bp Oil - |
Philadelphia |
PA |
| Harbison-walker Refractories Company - |
Pittsburgh |
PA |
| Clearfield Bank - |
Philadelphia |
PA |
| Hartman Steel Company - |
Beaver Falls |
PA |
| Delaware Valley Hospital - |
Langhorne |
PA |
| Heintz Manufacturing Company - |
Philadelphia |
PA |
| Felins Meat Packing - |
Philadelphia |
PA |
| Hershey Foods Corporation - |
Hershey |
PA |
| Germantown Jewish Center - |
Philadelphia |
PA |
| Homeopathic Hospital - |
Pittsburgh |
PA |
| House Of Good Shepard - |
Reading |
PA |
| Hoopes And Townsend - |
Ft. Washington |
PA |
| Keasby Mattison - |
Ambler |
PA |
| Hugh Mcinnes Rebecca Paper Mill - |
Bridgeport |
PA |
| Longstreth Elementary School - 57th Willow Avenue - |
Philadelphia |
PA |
| Independent Brewing Company Of Pittsburgh - |
Pittsburgh |
PA |
| Muhlenberg High School - |
Philadelphia |
PA |
| International Motor Company - |
East Penn Junction |
PA |
| Pennsylvania Railroad - |
Reading |
PA |
| Island Petroleum Company - |
Neville Island |
PA |
| Philadelphia Electric Company - Delaware Generating Station - |
Philadelphia |
PA |
| J.w. Arrott - |
Pittsburgh |
PA |
| Pollock School - Welsh Road - |
Philadelphia |
PA |
| J.h. And C.k. Eagle - |
Shamokin |
PA |
| Saint Joe`s Lead - |
Monacca |
PA |
| Jameson Coal And Coke Company - |
Greensburg |
PA |
| Spectrum - |
Philadelphia |
PA |
| Jefferson Clearfield Coal Iron Company - |
Punxsutawney |
PA |
| Thomas Jefferson Hospital - |
Philadelphia |
PA |
| John A. Rigg - |
Lebanon |
PA |
| University Of Pennsylvania - Maloney Building - Room 636 - |
Philadelphia |
PA |
| John Zimmermann And Sons - |
Philadelphia |
PA |
| Us Mint - |
Philadelphia |
PA |
| Joseph And Thropp - |
Earlston |
PA |
| West Philadelphia City High School - 36th Filbert Streets - |
Philadelphia |
PA |
| Kelly And Ludwig - |
Philadelphia |
PA |
| Abbotts Dairy - |
Belleville |
PA |
| Keystone Roofing Company - |
York |
PA |
| Aliquippa Works - Truck Station 103 - |
Aliquippa |
PA |
| Koppers Company - |
Josephtown |
PA |
| Allied Chemical Dye Corporation - |
Frankford |
PA |
| Lackawanna And Wyoming Valley Railway Company - |
Scranton |
PA |
| Argyl Mfg Co - Pen Argyl - |
Pen Argyl |
PA |
| Lance Colliery #11 - |
Plymouth |
PA |
| Atlantic Refining Co - North Gate - Harry Yust - |
Philadelphia |
PA |
| Leamy Home Mount Airy - |
Philadelphia |
PA |
| Atlantic Refining Co - Tanks Nbr 1264 1265 - |
Philadelphia |
PA |
| Lehigh And Wilkes Barre Coal Company, Colliery #4 - |
Audenried |
PA |
| Baltimore And Ohio Railroad Company - Division Sk - Section A - |
New Castle |
PA |
| Lehigh Coal And Navigation Company - |
Hauto |
PA |
| Bethlehem Steel Co - Central Boilers Dept - |
Steelton |
PA |
| Lehigh Portland Cement Company - |
Allentown |
PA |
| Bethlehem Steel Company - Whl Plt Brick Storage - Stop 242 - |
Johnstown |
PA |
| Lehigh Valley Coal Company - |
Jeansville |
PA |
| Caterpillar Tractor Company - Bldg. B - |
York |
PA |
| Lehigh Valley Coal Company - |
Jeansville, Hazelton |
PA |
| Closure Plant Bldg 13-d - Flr Plt Bldg 201-b - |
Lancaster |
PA |
| Liggett And Myers Tobacco Company - |
Philadelphia |
PA |
| Corning Glass Works - Bradford Plant - |
Bradford |
PA |
| Lockhart Iron And Steel Company - |
Mckees Rocks |
PA |
| Duquesne Light Co - Elrama Power Plant - Storeroom - |
Elrama |
PA |
| Lucy Furnaces - |
Pittsburgh |
PA |
| Erie Lackawanna Railroad - Team Track - |
Kingston |
PA |
| Mabel Furnace - |
Sharpsville |
PA |
| Freeport Terminal Inc - Liquid Bulk Terminal - |
Freeport |
PA |
| Manhattan Slate Company - |
Slatington |
PA |
| Gulf Oil Corp - Gate #24 - |
Philadelphia |
PA |
| Maryland Coal Company - |
Tuscarora |
PA |
| H. J. Heinz Co - Pgh Plumbing Department - |
Pittsburgh |
PA |
| Mc Daniel And Harvey - |
Philadelphia |
PA |
| Hilton Hotel - |
Mckees Rocks |
PA |
| Mcgrew Parkinson And Company - |
Monongahela |
PA |
| Keppars Co - |
Petrolia |
PA |
| Megargee Paper Mills - |
Tullytown |
PA |
| Koppers Company - Dylite Plant - |
Kobuta |
PA |
| Mercy Hospital - |
Altoona |
PA |
| Koppers Company - Tar Products Division - |
New Norristown |
PA |
| Midvale Heppenstall Company - |
Nicetown, Philadelphia |
PA |
| Lancaster Closure Plant - |
Lancaster |
PA |
| Mill Creek Coal Company - |
Delano |
PA |
| South Pittsburgh Water Company - E.h. Aldrich Treatment Complex - |
Elrama |
PA |
| Mahoningtown Shops - |
New Castle |
PA |
| Mary Wood College - Novitiate Bldg - |
Scranton |
PA |
| Monongahela Melting Company - |
Altoona |
PA |
| Metropolitan Edison Co - Portland Generating Station - Unit #1 - |
Portland |
PA |
| Mount Sinai Hospital - |
Philadelphia |
PA |
| Miseracordia - Student Union Dorms - |
Kingston |
PA |
| New Jersey And Pennsylvania Traction Company - |
Yardley |
PA |
| National Lead Co - Bldg #30 - |
Philadelphia |
PA |
| National Gypsum Company - |
Milton |
PA |
| New Secondary School - |
Wyalusing |
PA |
| National Tube Works Company - |
Versailles |
PA |
| North Pipe Shop - Station 270 - |
Aliquippa |
PA |
| New Castle Portland Cement Company - |
New Castle |
PA |
| Penn High School - |
Kingston |
PA |
| Newton Coal Mining Company - |
Pittston |
PA |
| Pennsylvania Industrial Chemical Co - Jefferson Plant - |
West Elizabeth |
PA |
| North American Lace Company - |
Philadelphia |
PA |
| Pennsylvania Power Light Co - Montour Steam Elec Station Unit 2 - |
Washingtonville |
PA |
| Number 8 Bolliery - |
Pittston |
PA |
| Peoples Natural Gas Company - Office Building - |
Wilkinsburg |
PA |
| Nuttal Works - |
Pittsburgh |
PA |
| Pittsburgh Coke Chemical Co. - |
Neville Island |
PA |
| Oliver And Roberts Wire Company - |
Pittsburgh |
PA |
| Punxsutawney Secondary School - |
Punxsutawney |
PA |
| Orient Coal And Coke Company - |
New Salem |
PA |
| Rennepamp Supply Company - |
Pittsburgh |
PA |
| P.f. Magin And Company, Jones And Laughlin Building - |
Pittsburgh |
PA |
| S. Lancaster Co Sch Authority - New Sr High School - |
Quarryville |
PA |
| Parkview Court Apartments - |
Yeadon |
PA |
| South Penn Oil Company - |
Rouseville |
PA |
| Penn-allen Cement Company - |
Near Nazareth |
PA |
| Strand Township - Monroe Co - |
East Stroudsburg |
PA |
| Penn Sheraton Hotel - |
Philadelphia |
PA |
| Tobeyhanna Signal Depot - Building 1a-section 4 - |
Tobeyhanna |
PA |
| Pennsylvania Malleable Company - |
Mckees Rocks |
PA |
| U. S. Steel Corporation - |
Fairless |
PA |
| Pennsylvania Electric Company; New York State Electric And Gas Company - |
Homer City |
PA |
| U. S. Steel Corporation - Clairton Coke Coal Chemical Works - |
Clairton |
PA |
| Pennsylvania Coal Company - |
Sebastopol |
PA |
| U. S. Steel Corporation - Emrg Hosp Homestead District Works - |
Munhall |
PA |
| Pennsylvania Power Company - |
New Castle |
PA |
| U. S. Steel Corporation - Rankin Works #2 Turbo Blower - |
Rankin |
PA |
| Pennsylvania Railroad Company - |
South Altoona |
PA |
| United Steel Corporation - Duquesne Works - |
Duquesne |
PA |
| Pennsylvania Training School - |
Morganza |
PA |
| Vitro **re Metals - |
Canonsburg |
PA |
| Peoples Incandescent Light And Power Company - |
Meadville |
PA |
| West Penn Power Co - Armstrong Station - Near Kittanning, Pa. - |
Reesedale |
PA |
| Peters Packing Company - |
Keesport |
PA |
| Westinghouse - Ridge St Warehouse - |
Sharon |
PA |
| Philadelphia And Reading Railway - |
Philadelphia |
PA |
| Westinghouse Electric Company - Atomic Power Division - Forest Hills - |
Pittsburgh |
PA |
| Philadelphia Coke Company - |
Philadelphia |
PA |
| William J. Mimm Lancaster Floor Plant - |
Lancaster |
PA |
| Philadelphia Protectory For Boys - |
Phoenixville |
PA |
| Baltimore And Ohio Railroad Company - |
New Castle |
PA |
| Phoenix Iron And Steel Company - |
Chester |
PA |
| Koppers Company - |
Kobuta |
PA |
| Pittsburgh And Butler Street Railway Company - |
Renfrew, Butler County |
PA |
| Pittsburgh Railways Company, Brunots' Island - |
Pittsburgh |
PA |
| Pittsburgh Buffalo Company - |
Marianna |
PA |
| Pittsburgh Plate Glass Company - |
Tarentum |
PA |
| Pittsburgh Steel Products Company - |
Allenport |
PA |
| Pottsville Water Company - |
Pottsville |
PA |
| Pt. Richmond - |
Philadelphia |
PA |
| R. Hecksher And Sons - |
Swedeland |
PA |
| Read And Lovatt Manufacturing Company - |
Weatherby |
PA |
| Reliance Coke Company - |
Denbeau |
PA |
| Rich-sampliner Knitting Mills Company - |
Conshohocken |
PA |
| Robinson Clay Products Company - |
Pottstown |
PA |
| Rohm And Haas Company, West Washington Square - |
Bristol |
PA |
| S. Faith And Company - |
Philadelphia |
PA |
| Sayre, Pa - |
Sayre |
PA |
| Schuylkill Valley Traction Company - |
Philadelphia |
PA |
| Scranton Lace Company - |
Scranton |
PA |
| Shaft 2 - |
Irwin |
PA |
| Shawville Power Station - |
Clearfield |
PA |
| Shipman Coal Company - |
Shamokin |
PA |
| Singer Ice Company - |
Mckees Rocks |
PA |
| South Hills Ice Company - |
Dormont |
PA |
| Acme Iron Metal Company - |
Philadelphia |
PA |
| Southwark Station - |
Philadelphia |
PA |
| Atlantic Port Contractors, Incorporated - |
Philadelphia |
PA |
| Springdale Station - |
Springdale |
PA |
| Bickley Furnaces, Incorporated - |
Philadelphia |
PA |
| Standard Life Insurance Blding - |
Pittsburgh |
PA |
| Buck Iron Company - |
Quarryville |
PA |
| Stanton Colliery - |
Ashley |
PA |
| Columbian Carbon Company - |
Philadelphia |
PA |
| Stern And Silverman - |
Philadelphia |
PA |
| Dodge Steel Company - |
Philadelphia |
PA |
| Sun Shipbuilding And Drydock Company - |
Philadelphia |
PA |
| Eastern Gunite Corporation - |
Bala Cynwyd |
PA |
| Swees Steel Company - |
Williamsburg |
PA |
| Frog Switch Manufacturing Company - |
Carlisle |
PA |
| Temple Furnace - |
Temple |
PA |
| Green Spring Company - |
Philadelphia |
PA |
| Thomas Iron Company - |
Hokendauqua |
PA |
| Ite Circuit Breaker Company - |
Philadelphia |
PA |
| Tower Hill Connellsville Coke Company - |
Republic |
PA |
| Kawecki Chemical Company - |
Bovertown |
PA |
| Tyrone Iron Company - |
Harrisburg |
PA |
| M S A Research Corp - |
Callery |
PA |
| Union Station - |
Pittsburgh |
PA |
| Mesta Machine Corp - |
New Castle |
PA |
| United States Coal And Coke Company - |
Pittsburgh |
PA |
| National Galvanizing Co - |
Pittsburgh |
PA |
| United States Steel Corporation - |
Dravosburg |
PA |
| Owens Illinois - |
Claxton |
PA |
| Us Post Office - |
Philadelphia |
PA |
| Philadelphia Rust Proof C - |
Philadelphia |
PA |
| Vanadium Alloys Steel Company - |
Monaca |
PA |
| Pittsburgh Plate Glass - |
Harmarville |
PA |
| Vulcan Foundry And Machine Company - |
New Castle |
PA |
| Republic Steel Corporation - |
W Newton |
PA |
| W.j. Mccahan Sugar Refining Company - |
Philadelphia |
PA |
| Scottdale Wood Prod - |
Scottdale |
PA |
| Wanamie Colliery - |
Wanamie |
PA |
| Sylvania Elec Prod Inc - |
York |
PA |
| Washington Steel And Ordnance Company - |
Uniontown |
PA |
| U S Dept Of Agriculture - |
Philadelphia |
PA |
| Wellman-seaver Morgan Company - |
Erie |
PA |
| Universal Cyclops Corp - |
Pittsburgh |
PA |
| West Pennsylvania Traction Company - |
Connellsville |
PA |
| Westinghouse Elec Corp - |
Lester |
PA |
| Westinghouse Air Brake Company - |
Allegheny |
PA |
| Woodings Verona Tools Works - |
Verona |
PA |
| Westinghouse Electric Corporation - |
East Pittsburgh |
PA |
| American Brake Shoe Company - |
New Castle |
PA |
| Westvaco - |
Williamsburg |
PA |
| Beryllium Corporation - |
Reading |
PA |
| Wilkes Barre Electric Light Company - |
Wilkes Barre |
PA |
| Buono Bakery - |
Chester |
PA |
| Wilson And Company, Incorporated - |
Philadelphia |
PA |
| Dredge Philadelphia - |
Chester |
PA |
| William L. Sayre Junior High School - |
Philadelphia |
PA |
| G. Garrett Sons - |
Philadelphia |
PA |
| Wolf Building Company - |
Philadelphia |
PA |
| Jersey Shore Steel Company - |
Avis |
PA |
| York Hospital - |
York |
PA |
| Lorenz Heat Treating - |
Philadelphia |
PA |
| Bethlehem Steel Corporation - |
Franklin |
PA |
| Nice Ball Bearing - |
Kulpsville |
PA |
| Usx Irving Works - |
West Mifflin |
PA |
| Pine Township Coal Company - |
Heilwood |
PA |
| Goodyear Tire And Rubber Company - |
Conshohocken |
PA |
| S.f. Whitman Son - |
Philadelphia |
PA |
| Bethlehem Steel Corporation - |
Homestead |
PA |
| S.s. Richfield - |
Chester |
PA |
| Catalytic, Incorporated - |
Philadelphia |
PA |
| Talco Metals Company - |
Philadelphia |
PA |
| Des Moines Steel - |
Pittsburgh |
PA |
| Vertal Division - |
Eddystone |
PA |
| Universal Cyclops Steel Mill - |
Titusville |
PA |
| Bethlehem Steel - |
Ebdenburg |
PA |
| E.g. Budd Company - |
Philadelphia |
PA |
| Michael Flynn - |
Philadelphia |
PA |
| Ltv Steel - |
Ambridge |
PA |
| Pittsburgh Plate Glass Co - |
Ford City |
PA |
| Cia Panamena De Fuerza Y Luz - |
Panama City |
PA |
| Swindell-dressler Company - |
Pittsburgh |
PA |
| Peach Bottom Nuclear Plant - |
York County |
PA |
| Harbison-walker Refr. Co. - |
Pittsburgh |
PA |
| Allegheny Ludlum Steel Corporation - |
Brackenridge |
PA |
| Khulna Newsprint Mill - |
Khulna |
PA |
| Westinghouse Electric Manufacturing Co. - East Pittsburgh Works - |
East Pittsburgh |
PA |
| Delaware County Incinerat - |
Chester |
PA |
| Pennsylvania Power Light Co. (a/k/a Phoenix Utility) - Walnut Steam Heat Station - |
Harrisburg |
PA |
| Continental Oil Co - |
Chester |
PA |
| Climax Molybdenum Company - |
Langeloth / Burgettstown |
PA |
| Klur Frank Co - |
Pittsburgh |
PA |
| National Tube Company (a/k/a U.s. Steel) - Central Boiler House - |
Mckeesport |
PA |
| United Engr Foundry Co - |
Pittsburgh |
PA |
| Synthane-taylor Corp (a/k/a Taylor Fibre) - |
Norristown |
PA |
| A And A - |
Philadephia |
PA |
| International Shoe Company - Frankford Tannery - |
Philadelphia |
PA |
| Blumenthal Brothers Choco - |
Philadelphia |
PA |
| U.s. Government Suppy Depot - Quatermasters - |
Philadelphia |
PA |
| Combustion Equipment Serv - |
Oreland |
PA |
| Pennsylvania Electric - Keystone Generating Station - |
Plumcreek |
PA |
| E Bergendahl Co - |
Philadephia |
PA |
| Paul W. Anderson - |
Stroudsburg |
PA |
| Florig Equipment Co - |
Conshohecken |
PA |
| Hellwig Silk Dying Co - Delaware Ave Howell St. - |
Wissinoming / Philadelphia |
PA |
| Grimme Combustion Inc Don - |
Philadelphia |
PA |
| Banks Morton - |
Pittsburgh |
PA |
| Keenan Co - |
Philadelphia |
PA |
| Frank Samuels (ce Minerals) - |
Valley Forge |
PA |
| Mcconovay And Torley Corp - |
Pittsburgh |
PA |
| Keplers Fuel Company - |
Easton |
PA |
| O Amos Co Div Mcdonough C - |
Philadelphia |
PA |
| Philadelphia, City Of - |
Philadelphia |
PA |
| Philadelphia Gear Works - |
King Of Prussia |
PA |
| Tynan Incinerator-dela City In - |
Chester Township |
PA |
| Proctor And Schwartz Inc - |
Philadelphia |
PA |
| Cove - |
Chester |
PA |
| St Lukes Hospital - |
Bethlehem |
PA |
| Northern Light (t-ak-284) - |
Chester |
PA |
| United Engr And Fdry Co - |
Vandergrift |
PA |
| 3 Mile Island - |
Middletown |
PA |
| Westinghouse Electric Cor - |
Lester |
PA |
| Appleby Brothers Whittaker - |
Harrisburg |
PA |
| Roch Pittsburghh Coal - |
Homer City |
PA |
| Bethlehem Steel Company - |
Bethlehem |
PA |
| Heppenstall - |
Pittsburgh |
PA |
| Catalytic Construction Company - |
Philadelphia |
PA |
| Bethlehem Steel Corporation - |
Bethlehem |
PA |
| E. Keeler Company - |
Williamsport |
PA |
| Penn Central - |
Altoona |
PA |
| George V Hamilton Inc. - |
Mckees Rock |
PA |
| Pennsylvania Turnpike - |
Harrisburg |
PA |
| Homer City Power Plant - |
Homer City |
PA |
| American Bridge - |
Clairton |
PA |
| Loftus Engineering Corporation - |
Pittsburgh |
PA |
| Chicago Bridge Iron Co. - |
Greenville |
PA |
| Philadelphia Electric - |
Sanatoga |
PA |
| Ferro Corporation - |
Hazelton |
PA |
| Portland Cement Co. - |
Allentown |
PA |
| J L Steel - |
Aliquippa |
PA |
| Septa Powerhouse - |
Philadelphia |
PA |
| National Valve - |
Johnstown |
PA |
| Penn Dairies - |
Pottsville |
PA |
| Pittsburgh Metal Proc. - |
Pittsburgh |
PA |
| Westinghouse Electric Company - |
Blairsville |
PA |
| Union Eletric - |
Burgettstown |
PA |
| Parsons Insulation - |
Wilkes Barre |
PA |
| Philadelphia Electric Company - Barbados Island - |
Barbados Island |
PA |
| United Refining Co. - |
Warren |
PA |
| West Pennsylvania Power Company - |
Courtney |
PA |
| Alloy Rods Corporation - |
York |
PA |
| Armstrong Cork Company - Digester Liquor Tank - |
Lancaster |
PA |
| Union Trust Building - |
Pittsburgh |
PA |
| Conemaugh Power Station - Units #1 #2 - |
New Florence |
PA |
| Grinnell Corporation - |
Columbia |
PA |
| Philadelphia Electric Company - Richmond Facility - Fuel Oil Facility - |
Philadelphia |
PA |
| Us Steel, Usx - |
Pittsburgh |
PA |
| Armstrong Cork Company - Tanks Hood - |
Pittsburgh |
PA |
| National Can - |
Fairless Hills |
PA |
| Pennsylvania Power Light - |
Shamokin Dam |
PA |
| Babcock Wilcox - |
West Mayfield |
PA |
| Caterpillar Tractor Company - Memory Lance - |
York |
PA |
| Mitchell Power Station - |
Monongahela |
PA |
| Benjamin Foster Company - |
Philadelphia |
PA |
| Acme Markets Warehouse - |
Reading |
PA |
| G.s.a. - |
Harrisburg |
PA |
| Alloy Rod Plant - |
Hanover |
PA |
| Pennsylvania Power Light, Brunner Island Plant, Unit #2 - |
York Haven |
PA |
| Arco Oil Refinery - |
Philadelphia |
PA |
| R.a. Duckworth, P.g.h. Steamline - |
Philadelphia |
PA |
| Baldt Anchor Company - |
Chester |
PA |
| U.s. Steel, Sinter Plant #1 - |
Saxonburg |
PA |
| Bethlehem Steel Corporation - Steel Mill - |
Bethlehem |
PA |
| Gulf (chevron) Refinery, 1331 Unit - |
Philadelphia |
PA |
| C.f. Luppold - |
Leesport |
PA |
| National Lead Co. - |
Pittsburgh |
PA |
| Container Corporation Of America - |
Manayunk |
PA |
| Martins Creek, P.p.l. - |
Stroudsburg |
PA |
| Dravo Shipbuilding - |
Neville Island |
PA |
| Monsey Products - |
Wissahicken |
PA |
| Ford And Kendig Company - |
Conshohocken |
PA |
| American Astronaut - |
Chester |
PA |
| Greater Pittsburgh Airport - |
Pittsburgh |
PA |
| Dent - |
Philadelphia |
PA |
| Hunlock Creek Powerhouse - |
Hunlock Creek |
PA |
| Pawcatuck - |
Chester |
PA |
| Kaufman Building - |
Pittsburgh |
PA |
| 1010 Race St. - |
Philadelphia |
PA |
| Lehigh Engineering - |
Bethlehem |
PA |
| A.m. Byers Company - |
Pittsburgh |
PA |
| Merck Chemical - |
Danville |
PA |
| Adrian Furnace - |
Dubois |
PA |
| National Steel - |
Pittsburgh |
PA |
| Alden Coal Company - |
Alden |
PA |
| Pacor - |
Chester |
PA |
| Allegheny County Institution District - |
Woodville |
PA |
| Pennsylvania Steel - |
Chester |
PA |
| Allegheny Ludlum Steel Corporation - |
Brackenridge |
PA |
| Pittsburgh Coke Chemical - |
Neville Island |
PA |
| Allied Chemical - |
Newell |
PA |
| Ranson Hospital - |
Ranson |
PA |
| Aluminum Company Of America - |
Pittsburgh |
PA |
| School District Of Philadelphia - |
Philadelphia |
PA |
| American Sheet Steel Company - |
Pittsburgh |
PA |
| St. Hubert's Convent - |
Philadelphia |
PA |
| American Bank Note Company - |
Philadelphia |
PA |
| Syntex Corporation - |
Allentown |
PA |
| American Engineering Company - |
Philadelphia |
PA |
| Uniontown Hospital - |
Uniontown |
PA |
| American Sheet Tin Plate Company - |
New Kensington |
PA |
| Westinghouse Bettis - |
West Mifflin |
PA |
| American Warming Ventilating Company - |
Altoona |
PA |
| U.s. Steel/usx (christy Park) - |
Mckeesport |
PA |
| Arbuckle, Ryan Company, Incorporated - |
Pittsburgh |
PA |
| Greenville Steel Car Company Plant - |
Greenville |
PA |
| Asbestos, Shingle, Slate And Sheathing Company - |
Ambler |
PA |
| Owens Corning Fiberglas Corp - |
Berwyn |
PA |
| B.f. Goodrich Company - |
Oaks |
PA |
| Philadelphia Electric Company - |
Chester |
PA |
| Ball Engine Company - |
Erie |
PA |
| International Boiler Works - |
E Stroudsburg |
PA |
| Barrett Division Allied Chemical And Dye Corporation - |
Frankford |
PA |
| Hubbs Howe Co - |
Erie |
PA |
| Beaver Falls Medical Center - |
Beaver Falls |
PA |
| Motor Coils Mfg Co - |
Evans City |
PA |
| Elliott Turbomachinery Company, Incorporated - |
Jeannette |
PA |
| U G I Corp - |
Harrisburg |
PA |
| Berwind White Coal Mining Company - |
Dunlo |
PA |
| Penns Valley Insulation - |
Lester |
PA |
| Bethlehem Steel Corporation - |
Redington |
PA |
| Mackintosh Hemphill - |
Midland |
PA |
| Blackwood Colliery - |
Orwigsburg |
PA |
| Brunswick Asbestos Co Inc - |
Philadelphia |
PA |
| Orion Power Midwest, Llc - |
Elrama |
PA |
| American Steel - |
Pittsburgh |
PA |
| Breading Paperboard Corporation - |
Sinking Spring |
PA |
| Frank Roberts Sons Inc - |
Punxsutawney |
PA |
| Brunots Island - |
Pittsburgh |
PA |
| Penn Electric Co - |
Shawville |
PA |
| Bureau Of Mines - |
Pittsburgh |
PA |
| Struthers Scientific - |
Warren |
PA |
| C. Howard Mercy State Hospital - |
Pittsburgh |
PA |
| Air Reduction Sales Company - |
Bethlehem |
PA |
| Cambria Steel Company, Office Building - |
Johnstown |
PA |
| Arco (atlantic Richfield Company) - |
Point Breeze |
PA |
| Carnegie Illinois Steel Corporation - |
Dravosburg |
PA |
| Buck Hill Falls Inn - |
Buck Hill Falls |
PA |
| Carnegie Steel Company - |
South Duquesne |
PA |
| Container Corporation Of America - |
Philadelphia |
PA |
| Carson Industrial Development Corporation - |
Pittsburgh |
PA |
| E.i. Du Pont De Nemours - |
Philadelphia |
PA |
| Chamberlain Coal Company - |
Pottsville |
PA |
| Glen Alden Coal - |
Ashley |
PA |
| Charles E. Langcake - |
Philadelphia |
PA |
| Hydro-blast Corporation - |
Erie |
PA |
| Childrens Homeopathic Hospital - |
Philadelphia |
PA |
| Limbach Company - |
Pittsburgh |
PA |
| City Of Pittsburgh Mayview Plant - |
Pittsburgh |
PA |
| Michigan Limestone And Chemical - |
Annandale |
PA |
| Coalfax Power Station - |
Cheswick |
PA |
| Pangborn Corporation - |
Bethlehem |
PA |
| Colonial Steel Company - |
Monaca |
PA |
| Petroleum Reclamation Company - |
Bradford |
PA |
| Conestoga Traction Company - |
Lancaster |
PA |
| Quaker State Oil Refinery - |
Farmers Vall |
PA |
| Consumers Light Company - |
Plymouth |
PA |
| Tate Jones Company - |
Beaver Falls |
PA |
| Coxe Traveling Grate Company - |
Port Carbon |
PA |
| United Engineering Foundry Company - |
Titusville |
PA |
| Cross Creek Coal Company - |
Deringer |
PA |
| Westinghouse Electric Manufacturing Co. - |
Irwin |
PA |
| D. Lutz Son Brewing Company - |
Allegheny City |
PA |
| Conrail/penn Central/new York Central/pennsylv - |
Not Provided |
PA |
| Danville And Sunbury Street Railway Company - |
Danville |
PA |
| Pittsburgh Des Moines Steel - |
Pittsburgh |
PA |
| Delaware And Hudson Company - |
Archibald |
PA |
| Bigelow Apartments - |
Pittsburgh |
PA |
| Delaware Storage And Freezing Company - |
Philadelphia |
PA |
| Firestone Tire Rubber Company - |
Philadelphia |
PA |
| Diamond National Bank Building - |
Pittsburgh |
PA |
| Latrobe Forge Spring, Inc. - |
Latrobe |
PA |
| Dolph Coal Company - |
Pickville |
PA |
| New Jersey Zinc Company - West Plant Slab Z - |
Palmerton |
PA |
| Driggs Seabury Ordnance Company - |
Sharon |
PA |
| Rohm Haas Company - |
Bristol |
PA |
| Duquesne Light Company, 30th St. Station - |
Pittsburgh |
PA |
| United States Steel Corporation - |
Fairless |
PA |
| East Liberty Home Dressed Meat Company - |
Pittsburgh |
PA |
| Lancaster Malleable Castings Co - |
Lancaster |
PA |
| East Liberty - |
Pittsburgh |
PA |
| Foote Mineral - |
Exton |
PA |
| Edgar Thompson Steel Works - |
Bessemer |
PA |
| Phoenix Steel Corporation - |
Phoenixville |
PA |
| Edison Light And Power Company - |
York |
PA |
| Koppel Steel Company - |
Beaver Falls |
PA |
| Elk Tanning Company - |
Curwensville |
PA |
| Cramp Shipbuilding - |
Philadelphia |
PA |
| Empire Iron And Steel Company - |
Macungie |
PA |
| Frankfort High School - |
Philadelphia |
PA |
| Es Magee Hospital - |
Pittsburgh |
PA |
| Jones Laughlin Steel - |
Hazelwood |
PA |
| Exchange Building - |
Philadelphia |
PA |
| National Biscuit Plant - |
Pittsburg |
PA |
| F.g. Vogt And Sons - |
Philadelphia |
PA |
| Pennsylvania Sugar Co - |
Philadelphia |
PA |
| Federal Paper Board Company, Incorporated, Paper Board Division - |
Reading |
PA |
| Reading Iron Co - |
Reading |
PA |
| Fleetwood Metal Body Company - |
Fleetwood |
PA |
| United Gas Improvement Co Philadelphia Gas Works - |
Philadelphia |
PA |
| Ft. Pitt Malleable Iron Company - |
Mckees Rocks |
PA |
| William Wharton - |
Easton |
PA |
| Franklin Works - |
Johnstown |
PA |
| Beryllium Corp - |
Reading |
PA |
| Garland Nut And Rivet Company - |
West Pittsburgh |
PA |
| Breman's Express Pittsburgh Terminal - |
Pittsburgh |
PA |
| General Electric Company, Transportation Systems Division - |
Erie |
PA |
| Howmet Corp. - |
Lancaster |
PA |
| George Hasley And Sons - |
Allegheny |
PA |
| Philadelphia Electric Co. - |
Philadelphia |
PA |