| 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 Swanks 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 |
| Childrens 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 |
| Dolier 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 |
| 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 |
| 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. Marys 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 Swanks 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 |
| 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 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 |
| 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 |
| Lorens Heat Treating |
Philadelphia |
PA |
| United States Steel |
Ellwood City |
PA |
| National Molasses |
Philadelphia |
PA |
| British Petroleum Company |
Trainer |
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 |
| Sweets 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 |
| 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 |
| 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. Huberts 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 |
| Bremans 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 |
| Girard Estate Peoples Bank |
Philadelphia |
PA |
| Zedmark, Inc. |
Valencia |
PA |
| Globe Dye Works Company |
Philadelphia |
PA |
| Ada Lewis Junior High School, Tulpehocken And Ardleigh Stree |
Philadelphia |
PA |
| Grocers Sugar House |
Philadelphia |
PA |
| Lenhardt Hall, Millersville University |
Millersville |
PA |
| H.k. Porter Company |
Pittsburgh |
PA |
| Academy Of Music Broad Street |
Philadelphia |
PA |
| H.c. Frick Coke Company |
Westmoreland County |
PA |
| B F Goodrich Tire Company |
Oakes |
PA |
| H.k. Crimming Tradesman Grain Elevator And Storage Company |
Philadelphia |
PA |
| Bp Oil |
Trainer |
PA |
| Harbison-walker Refractories Company |
Woodland |
PA |
| Clearfield High School |
Clearfield |
PA |
| Harvey And Collins |
Austin |
PA |
| Depaco Paper Company |
Downington |
PA |
| Helfenstein, Lewis And Green |
Philadelphia |
PA |
| Firestone Tire Rubber |
Pottstown |
PA |
| Hestonville Mantua Fairmount Passenger Railroad Company |
Philadelphia |
PA |
| Gimbels Store |
Philadelphia |
PA |
| Homeopathic Hospital For The Insane |
East Allentown |
PA |
| Huffman Industries |
Sinking Springs |
PA |
| Hoopes And Townsend Company |
Ft. Washington |
PA |
| Keebler Biscuits Company |
Philadelphia |
PA |
| Hughes And Gauthorp Company |
Pittsburgh |
PA |
| Lormack Corporation |
Schellburg |
PA |
| Independent Bridge Company |
Pittsburgh |
PA |
| Municipal Services Building |
Philadelphia |
PA |
| International Paper Company |
York Haven |
PA |
| Pennsylvania Academy Of Fine Arts Broad Street |
Philadelphia |
PA |
| Island Petroleum Company, Neville Island |
Pittsburgh |
PA |
| Philadelphia Electric Company Peco Building 23rd Market Streets |
Philadelphia |
PA |
| J.w. Koch Company |
Harrisburg |
PA |
| Post Office 30th Street |
Philadelphia |
PA |
| J.h. And C.k. Eagle Company |
Shamokin |
PA |
| Saint Joseph`s School |
Norristown |
PA |
| Jameson Coal And Coke Company |
Crab Tree |
PA |
| Spirax-sarco Incorporated |
Allentown |
PA |
| Jefferson Clearfield Coal Iron Company |
Ernest |
PA |
| Tilden Junior High 66th Elmwood |
Philadelphia |
PA |
| John B. Stetson |
Philadelphia |
PA |
| University Of Pennsylvania Medical Laboratory |
Philadelphia |
PA |
| Johnson And Company |
Johnstown |
PA |
| Us Mint 4th Arch Street |
Philadelphia |
PA |
| Joseph Horne And Company |
Pittsburgh |
PA |
| Wilson Senior High School |
Sinking Springs |
PA |
| Kelly Wooden Ware Company |
Waterford |
PA |
| Alcoa |
Mckees Rocks |
PA |
| Keystone Shaft Mine |
Madison |
PA |
| Aliquippa Works Truck Station 27 |
Aliquippa |
PA |
| Koppers Company Koppers Building |
Pittsburgh |
PA |
| Allied Chemical Dye Corporation New Phenol Plant |
Philadelphia |
PA |
| Lackawanna Coal And Coke Company |
Vintondale |
PA |
| Army Reserve Center |
Clearfield |
PA |
| Lance Colliery #11 |
Plymouth Junction |
PA |
| Atlantic Refining Co North Yard |
Philadelphia |
PA |
| Lebanon Blast Furnace Company |
Lebanon |
PA |
| Atlantic Refining Co Wax Plant Exp. Heavy Fuel Addn South Yard Near Tank #850 |
Philadelphia |
PA |
| Lehigh And Wilkes Barre Coal Company, Hollenback Colliery #2 |
Wilkes Barre |
PA |
| Baltimore And Ohio Railroad Company Division Sk Section C |
Dubois |
PA |
| Lehigh Coal And Navigation Company |
Philadelphia |
PA |
| Bethlehem Steel Co Central Boilers Dept West End Yard |
Steelton |
PA |
| Lehigh Portland Cement Company |
Fogelsville |
PA |
| Bethlehem Steel Subsidiary Cos. #4 Shop Warehouse Lehigh Division |
Bethlehem |
PA |
| Lehigh Valley Coal Company |
Mt Carmel |
PA |
| Champion Valley Farm Between Berwick Bloomsburg Pa |
Lime Ridge |
PA |
| Leisenring And Company |
Duncott |
PA |
| Colt Industries Stainless Steel Alloy Div. |
Midland |
PA |
| Liggett Spring And Axle Company |
Monongahela |
PA |
| Corning Glass Works Component Plant |
Bradford |
PA |
| Locust Spring Colliery |
Locust Gap |
PA |
| Duquesne Light Co Frank R. Phillips Power Station |
Wireton |
PA |
| Luke Fidler Colliery |
Shamokin |
PA |
| Eureka |
Kingston |
PA |
| Macaw Brothers |
Norwood |
PA |
| G. E. Industrial Tube Plant |
Scranton |
PA |
| Marcal Paper Mills, Incorporated |
Philadelphia |
PA |
| Gulf Oil Corp Gate 24 Penrose Ave. At Lanier Girard Point |
Philadelphia |
PA |
| Maryland Coal Company |
Maryd |
PA |
| H. J. Heinz Co Pittsburgh Plumbing Dept |
Pittsburgh |
PA |
| Mc Dowell Paper Company |
Manayunk |
PA |
| Hilton Hotel Empire Bldg Gateway No 3 |
Mckees Rocks |
PA |
| Mcguinnes Company |
Pittsburgh |
PA |
| Keystone Generating Station Unit 2 |
Elderton |
PA |
| Mellon Bank, Old Uss Building |
Pittsburgh |
PA |
| Koppers Company Elastic Division |
Kobuta |
PA |
| Merion And Radnor Gas And Electric Company |
Wayne |
PA |
| Koppers Company Tar Products Division |
Oil City |
PA |
| Midvale Steel And Ordnance Company |
Nicetown |
PA |
| Lancaster Floor Plant |
Lancaster |
PA |
| Mill Creek Coal Company |
Vulcan |
PA |
| Lovekin Trageser Div |
Philadelphia |
PA |
| Monessen Works |
Monessen |
PA |