| 1 | MAX ENVIRONMENTAL -- YUKON FACILITY | Yukon | Hazardous Waste | 5.5M lbs | 9 |
| 2 | USS-CLAIRTON PLANT | Clairton | Petroleum | 3.8M lbs | 32 |
| 3 | USS MON VALLEY WORKS - EDGAR THOMSON PLANT | Braddock | Primary Metals | 3.6M lbs | 17 |
| 4 | CLEVELAND-CLIFFS STEEL CORP /BUTLER WORKS | Butler | Primary Metals | 2.5M lbs | 12 |
| 5 | CARPENTER TECHNOLOGY CORP | Reading | Primary Metals | 1.5M lbs | 15 |
| 6 | APOLLO METALS LTD | Bethlehem | Fabricated Metals | 1.2M lbs | 3 |
| 7 | COLVER GREEN ENERGY | Colver | Electric Utilities | 957.0K lbs | 12 |
| 8 | SAINT NICHOLAS COGENERATION PROJECT | Shenandoah | Electric Utilities | 917.7K lbs | 18 |
| 9 | ATI FLAT ROLLED PRODUCTS HOLDINGS LLC | Vandergrift | Primary Metals | 846.2K lbs | 9 |
| 10 | GILBERTON POWER CO | Frackville | Electric Utilities | 814.7K lbs | 13 |
| 11 | NORTHAMPTON GENERATING PLANT | Northampton | Electric Utilities | 734.7K lbs | 12 |
| 12 | SCRUBGRASS GENERATING PLANT | Kennerdell | Electric Utilities | 697.3K lbs | 15 |
| 13 | SHELL CHEMICAL APPALACHIA LLC | Monaca | Primary Metals | 692.6K lbs | 11 |
| 14 | CONEMAUGH GENERATING STATION | New Florence | Electric Utilities | 573.3K lbs | 13 |
| 15 | PIXELLE SPECIALTY SOLUTIONS LLC | Spring Grove | Paper | 572.6K lbs | 18 |
| 16 | WOODGRAIN INC. | Wysox | Wood Products | 566.5K lbs | 12 |
| 17 | ENVIRITE OF PENNSYLVANIA INC | York | Hazardous Waste | 566.0K lbs | 11 |
| 18 | RAUSCH CREEK GENERATION LLC | Tremont | Electric Utilities | 539.8K lbs | 10 |
| 19 | GAF KEYSTONE LLC/NEW COLUMBIA FACILITY | New Columbia | Fabricated Metals | 530.0K lbs | 1 |
| 20 | EAST PENN MANUFACTURING CO INC | Lyon Station | Electrical Equipment | 517.2K lbs | 6 |
| 21 | PANTHER CREEK POWER OPERATING LLC | Nesquehoning | Electric Utilities | 497.5K lbs | 12 |
| 22 | HOMER CITY GENERATION LP | Homer City | Electric Utilities | 479.4K lbs | 13 |
| 23 | TENARIS KOPPEL | Koppel | Primary Metals | 456.2K lbs | 7 |
| 24 | ELLWOOD QUALITY STEELS CO | New Castle | Primary Metals | 455.6K lbs | 6 |
| 25 | KEYSTONE POWER PLANT | Shelocta | Electric Utilities | 429.8K lbs | 15 |
| 26 | SONNEBORN LLC | Petrolia | Petroleum | 414.4K lbs | 4 |
| 27 | EBENSBURG POWER CO | Ebensburg | Electric Utilities | 377.4K lbs | 7 |
| 28 | GLOBAL ADVANCED METALS USA | Boyertown | Primary Metals | 374.7K lbs | 8 |
| 29 | SYNTHOMER JEFFERSON HILLS LLC | Jefferson Hills | Chemicals | 351.6K lbs | 11 |
| 30 | JBS SOUDERTON INC - RENDERING DIV | Souderton | Food | 343.0K lbs | 2 |
| 31 | INTERNATIONAL WAXES INC | Smethport | Petroleum | 304.6K lbs | 4 |
| 32 | PERDUE AGRIBUSINESS LLC - BAINBRIDGE PA | Marietta | Food | 292.3K lbs | 2 |
| 33 | ARMSTRONG WORLD INDUSTRIES | Marietta | Miscellaneous Manufacturing | 289.5K lbs | 4 |
| 34 | DOMTAR - JOHNSONBURG MILL | Johnsonburg | Paper | 282.6K lbs | 14 |
| 35 | ADVANSIX RESINS & CHEMICALS LLC | Philadelphia | Chemicals | 266.0K lbs | 10 |
| 36 | MONROE ENERGY LLC-TRAINER REFINERY | Trainer | Petroleum | 246.7K lbs | 35 |
| 37 | ENTEGRIS INC. | Chester | Chemicals | 246.2K lbs | 5 |
| 38 | ESAB GROUP INC. | Hanover | Machinery | 239.9K lbs | 6 |
| 39 | CARLISLE SYNTEC A DIV OF CARLISLE CONSTRUCTION MATERIA | Carlisle | Plastics and Rubber | 193.6K lbs | 8 |
| 40 | CLARION BATHWARE | Marble | Plastics and Rubber | 192.4K lbs | 2 |
| 41 | SUPERIOR TUBE CO INC | Collegeville | Primary Metals | 186.7K lbs | 4 |
| 42 | GLOBAL TUNGSTEN & POWDERS LLC | Towanda | Primary Metals | 184.4K lbs | 8 |
| 43 | WARD MANUFACTURING LLC | Blossburg | Primary Metals | 177.2K lbs | 4 |
| 44 | US ARMY NATIONAL GUARD FORT INDIANTOWN GAP-WWTP | Annville | Other | 173.7K lbs | 2 |
| 45 | GEO SPECIALTY CHEMICALS TRIMET PRODUCTS GROUP | Allentown | Chemicals | 170.5K lbs | 5 |
| 46 | CAMBRIDGE-LEE INDUSTRIES | Reading | Primary Metals | 168.1K lbs | 2 |
| 47 | JESSOP STEEL LLC | Washington | Primary Metals | 156.9K lbs | 8 |
| 48 | MOUNT CARMEL COGEN FACILITY | Marion Heights | Electric Utilities | 156.3K lbs | 8 |
| 49 | TYSON POULTRY INC-NEW HOLLAND COMPLEX | New Holland | Food | 149.5K lbs | 3 |
| 50 | ADVANCED POLYMER TECHNOLOGY | Evans City | Chemicals | 145.0K lbs | 6 |
| 51 | ZEKELMAN INDUSTRIES CO DBA WHEATLAND TUBE CO-COUNCIL | Wheatland | Primary Metals | 127.5K lbs | 5 |
| 52 | AM STABILIZERS CORP | Franklin | Chemicals | 123.1K lbs | 3 |
| 53 | ESSROC CEMENT CORP | Nazareth | Nonmetallic Mineral Product | 122.9K lbs | 5 |
| 54 | ARCONIC US LLC | Lancaster | Primary Metals | 122.0K lbs | 10 |
| 55 | PPG INDUSTRIESINC-SPRINGDALE COMPLEX | Springdale | Chemicals | 117.6K lbs | 24 |
| 56 | CLEVELAND-CLIFFS PLATE LLC COATESVILLE FACILITY | Coatesville | Primary Metals | 115.8K lbs | 9 |
| 57 | DAIRY FARMERS OF AMERICA INC | New Wilmington | Food | 112.7K lbs | 2 |
| 58 | NOV FIBER GLASS SYSTEMS - CONTAINMENT SOLUTIONS | Mount Union | Plastics and Rubber | 111.6K lbs | 2 |
| 59 | U.S. ARMY LETTERKENNY ARMY DEPOT | Chambersburg | Other | 108.2K lbs | 3 |
| 60 | TECH MET INC. | Glassport | Fabricated Metals | 107.0K lbs | 3 |
| 61 | CALGON CARBON CORP NEVILLE ISLAND PLANT | Pittsburgh | Chemicals | 106.6K lbs | 8 |
| 62 | CYCLE CHEM INC | Lewisberry | Hazardous Waste | 106.5K lbs | 5 |
| 63 | MASTER WOODCRAFT CABINETRY LLC | Thompsontown | Furniture | 106.2K lbs | 3 |
| 64 | EDSAL MANUFACTURING | Littlestown | Furniture | 102.1K lbs | 3 |
| 65 | ELLWOOD NATIONAL FORGE CO | Irvine | Fabricated Metals | 99.8K lbs | 7 |
| 66 | DURA-BOND PIPE LLC | Steelton | Fabricated Metals | 97.8K lbs | 4 |
| 67 | BRUNNER ISLAND STEAM ELECTRIC STATION | York Haven | Electric Utilities | 97.1K lbs | 5 |
| 68 | VERSUM MATERIALS US LLC | Tamaqua | Chemicals | 96.8K lbs | 10 |
| 69 | CONESTOGA WOOD SPECIALTIES CORP | East Earl | Wood Products | 94.5K lbs | 7 |
| 70 | HEIDELBERG MATERIALS US CEMENT LLC - EVANSVILLE | Fleetwood | Nonmetallic Mineral Product | 93.1K lbs | 5 |
| 71 | ADVANCED CAST PRODUCTS INC | Meadville | Primary Metals | 92.9K lbs | 4 |
| 72 | IFS INDUSTRIES INC | Reading | Chemicals | 89.9K lbs | 3 |
| 73 | VICTAULIC CO - ALBURTIS FACILITY | Alburtis | Primary Metals | 89.7K lbs | 3 |
| 74 | TECH MET INC | Donora | Chemicals | 89.4K lbs | 2 |
| 75 | HOLCIM (US) INC. - WHITEHALL PLANT | Whitehall | Nonmetallic Mineral Product | 89.2K lbs | 7 |
| 76 | UNITED REFINING CO | Warren | Petroleum | 89.1K lbs | 20 |
| 77 | SALEM TUBE INC. | Greenville | Primary Metals | 88.6K lbs | 4 |
| 78 | ERVIN INDUSTRIES IN AMASTEEL DIV | Butler | Nonmetallic Mineral Product | 87.9K lbs | 1 |
| 79 | NESTLE PURINA PETCARE CO | Allentown | Food | 86.1K lbs | 2 |
| 80 | DYNAMET INC | Washington | Primary Metals | 84.8K lbs | 3 |
| 81 | VIANT COLLEGEVILLE LLC | Trappe | Primary Metals | 84.6K lbs | 6 |
| 82 | MAGNESITA REFRACTORIES CO | York | Nonmetallic Mineral Product | 83.6K lbs | 6 |
| 83 | MATERION BRUSH INC | Shoemakersville | Primary Metals | 82.0K lbs | 4 |
| 84 | ZEKELMAN INDUSTRIES, SHARON TUBE DIVISION-CHURCH ST | Farrell | Primary Metals | 80.4K lbs | 3 |
| 85 | USS MON VALLEY WORKS - IRVIN PLANT | West Mifflin | Primary Metals | 79.2K lbs | 8 |
| 86 | MARS WRIGLEY US LLC | Elizabethtown | Food | 78.3K lbs | 1 |
| 87 | ATI FLAT ROLLED PRODUCTS HOLDINGS LLC | Brackenridge | Primary Metals | 78.2K lbs | 7 |
| 88 | ANDRITZ INC. | Muncy | Machinery | 77.0K lbs | 8 |
| 89 | HIGH STEEL STRUCTURES - LANCASTER FACILITY | Lancaster | Fabricated Metals | 75.3K lbs | 5 |
| 90 | CLEVELAND-CLIFFS MONESSEN COKE LLC | Monessen | Petroleum | 73.5K lbs | 19 |
| 91 | VICTAULIC CO - LAWRENCEVILLE FACILITY | Tioga | Primary Metals | 72.8K lbs | 4 |
| 92 | MOXIE FREEDOM | Berwick | Electric Utilities | 72.3K lbs | 1 |
| 93 | PUNXSUTAWNEY FINISHING WORKS | Punxsutawney | Fabricated Metals | 72.1K lbs | 4 |
| 94 | PARKER LORD CORP | Saegertown | Chemicals | 66.5K lbs | 20 |
| 95 | WOOD-MODE LLC | Kreamer | Furniture | 65.1K lbs | 5 |
| 96 | TRUCK ACCESSORIES GROUP. LLC DBA TAG EAST | Milton | Transportation Equipment | 63.5K lbs | 1 |
| 97 | HAYSITE REINFORCED PLASTICS LLC | Erie | Plastics and Rubber | 62.4K lbs | 1 |
| 98 | KEYSTONE PROTEIN CO | Fredericksburg | Food | 60.8K lbs | 3 |
| 99 | WHITFORD CORP | Elverson | Chemicals | 59.5K lbs | 5 |
| 100 | ASC ENGINEERED SOLUTIONS - FKA ANVIL INTERNATIONAL | Columbia | Primary Metals | 55.9K lbs | 4 |
| 101 | AMERICAN CRAFT BREWERY LLC | Breinigsville | Beverages | 55.6K lbs | 4 |
| 102 | BETHLEHEM APPARATUS CO INC | Hellertown | Chemicals | 54.7K lbs | 1 |
| 103 | AMERICAN REFINING GROUP INC. | Bradford | Petroleum | 54.1K lbs | 13 |
| 104 | L&M FABRICATION & MACHINE INC. (SOUTH) | Bath | Fabricated Metals | 53.0K lbs | 3 |
| 105 | ROHM & HAAS CHEMICALS LLC | Bristol | Chemicals | 52.3K lbs | 13 |
| 106 | CLEVELAND-CLIFFS STEELTON LLC | Steelton | Primary Metals | 52.2K lbs | 7 |
| 107 | ELECTRALLOY | Oil City | Primary Metals | 50.5K lbs | 4 |
| 108 | COHERENT CORP. | Saxonburg | Machinery | 49.5K lbs | 4 |
| 109 | MONTOUR STEAM ELECTRIC STATION | Danville | Electric Utilities | 49.3K lbs | 5 |
| 110 | KEYSTONE CEMENT CO | Bath | Nonmetallic Mineral Product | 49.3K lbs | 36 |
| 111 | LAMTEC CORP | Mount Bethel | Paper | 48.4K lbs | 2 |
| 112 | MODERN INDUSTRIES INC. | Erie | Transportation Equipment | 48.3K lbs | 1 |
| 113 | CALPINE MID MERIT LLC YORK ENERGY CENTER | Delta | Electric Utilities | 47.8K lbs | 2 |
| 114 | VICTAULIC CO - FORKS FACILITY | Easton | Primary Metals | 47.5K lbs | 5 |
| 115 | HYDRO EXTRUSION USA LLC | Cressona | Primary Metals | 47.0K lbs | 6 |
| 116 | FLEXSYS AMERICA LP | Monongahela | Chemicals | 46.0K lbs | 2 |
| 117 | ALLEIMA USA LLC | Clarks Summit | Primary Metals | 43.4K lbs | 5 |
| 118 | WESTINGHOUSE ELECTRIC CO | Blairsville | Primary Metals | 42.8K lbs | 3 |
| 119 | UNION ELECTRIC STEEL CORP | Burgettstown | Machinery | 41.4K lbs | 4 |
| 120 | YUASA BATTERY INC. | Laureldale | Electrical Equipment | 40.4K lbs | 3 |
| 121 | LAND O'LAKES - CARLISLE | Carlisle | Food | 40.3K lbs | 2 |
| 122 | ALLEIMA PRECISION TUBE | Scottdale | Primary Metals | 40.3K lbs | 4 |
| 123 | KENVUE BRANDS LLC | Lititz | Chemicals | 38.4K lbs | 1 |
| 124 | LIBERTAS COPPER LLC | Leetsdale | Primary Metals | 38.3K lbs | 3 |
| 125 | BRASKEM AMERICA INC | Marcus Hook | Chemicals | 38.0K lbs | 1 |
| 126 | VITRO MEADVILLE FLAT GLASS LLC | Cochranton | Nonmetallic Mineral Product | 37.8K lbs | 2 |
| 127 | BETHLEHEM ENERGY CENTER | Bethlehem | Electric Utilities | 36.3K lbs | 1 |
| 128 | JONES PERFORMANCE PRODUCTS INC. | West Middlesex | Transportation Equipment | 34.2K lbs | 1 |
| 129 | J-LOK CO | Cresson | Chemicals | 33.1K lbs | 1 |
| 130 | PAPETTI'S HYGRADE EGG PRODUCTS INC | Klingerstown | Food | 32.8K lbs | 2 |
| 131 | STEEL MANAGEMENT SYSTEMS LLC | Nazareth | Fabricated Metals | 32.2K lbs | 1 |
| 132 | LEHIGH SPECIALTY MELTING INC | Latrobe | Primary Metals | 31.5K lbs | 4 |
| 133 | JOHNSTOWN WIRE TECHNOLOGIES INC. | Johnstown | Primary Metals | 31.1K lbs | 6 |
| 134 | JAMESTOWN COATING TECHNOLOGIES | Jamestown | Chemicals | 30.8K lbs | 4 |
| 135 | READING TRUCK BODY | Reading | Transportation Equipment | 30.2K lbs | 1 |
| 136 | BEFESA ZINC US INC. | Palmerton | Primary Metals | 29.7K lbs | 7 |
| 137 | RYNONE MANUFACTURING CORP | Sayre | Plastics and Rubber | 29.7K lbs | 1 |
| 138 | SHERWIN-WILLIAMS CO | Rochester | Chemicals | 29.5K lbs | 20 |
| 139 | ALTUGLAS LLC | Bristol | Chemicals | 29.5K lbs | 4 |
| 140 | WEBCO INDUSTRIES INC. OIL CITY TUBE DIV | Oil City | Primary Metals | 29.3K lbs | 3 |
| 141 | LIBERTY PULTRUSIONS | West Mifflin | Plastics and Rubber | 28.0K lbs | 1 |
| 142 | AKZO NOBEL COATINGS INC. | Reading | Chemicals | 27.2K lbs | 3 |
| 143 | THE PROCTER & GAMBLE PAPER PRODUCTS CO | Tunkhannock | Paper | 27.2K lbs | 6 |
| 144 | NATIONAL MAGNETICS GROUP INC | Bethlehem | Nonmetallic Mineral Product | 27.1K lbs | 1 |
| 145 | MOUNT JOY WIRE CORP | Mount Joy | Primary Metals | 26.9K lbs | 4 |
| 146 | MCCLARIN PLASTICS LLC | Hanover | Plastics and Rubber | 26.3K lbs | 3 |
| 147 | SWAGELOK PROCESSING CO | Koppel | Primary Metals | 26.1K lbs | 5 |
| 148 | BEDFORD TECHNICAL PRODUCTS LLC | Manns Choice | Paper | 25.9K lbs | 4 |
| 149 | NORTH AMERICAN HOGANAS | Hollsopple | Primary Metals | 25.7K lbs | 7 |
| 150 | DANA DRIVESHAFT PRODUCTS LLC | Pottstown | Transportation Equipment | 25.2K lbs | 3 |
| 151 | HANWHA PHILLY SHIPYARD INC | Philadelphia | Transportation Equipment | 25.1K lbs | 7 |
| 152 | WICKETT & CRAIG OF AMERICA | Curwensville | Leather | 24.9K lbs | 1 |
| 153 | ABERDEEN ROAD CO | Emigsville | Textiles | 24.3K lbs | 1 |
| 154 | CROWN FOOD PACKAGING | Hanover | Fabricated Metals | 24.1K lbs | 2 |
| 155 | MOLDED FIBER GLASS / UNION CITY | Union City | Plastics and Rubber | 23.8K lbs | 2 |
| 156 | PENNSYLVANIA GRAIN PROCESSING LLC | Clearfield | Chemicals | 23.1K lbs | 8 |
| 157 | OVERHEAD DOOR CORP-PENNSYLVANIA DIV | Lewistown | Fabricated Metals | 23.0K lbs | 3 |
| 158 | ATI FLAT ROLLED PRODUCTS LLC-LATROBE PLANT | Latrobe | Primary Metals | 22.9K lbs | 5 |
| 159 | NLMK PENNSYLVANIA LLC | Farrell | Primary Metals | 22.8K lbs | 5 |
| 160 | OHD THERMACORE INC. | Williamsport | Fabricated Metals | 22.5K lbs | 3 |
| 161 | GREAT LAKES METAL FINISHING INC. | Erie | Fabricated Metals | 22.3K lbs | 4 |
| 162 | TMS INTERNATIONAL LLC | Braddock | Hazardous Waste | 21.1K lbs | 6 |
| 163 | PULFLEX TECHNOLOGIES LLC | Ford City | Plastics and Rubber | 21.0K lbs | 1 |
| 164 | GELEST INC | Morrisville | Chemicals | 20.9K lbs | 4 |
| 165 | ARMSTRONG CEMENT & SUPPLY CORP | Cabot | Nonmetallic Mineral Product | 20.1K lbs | 4 |
| 166 | SUPERIOR TIRE & RUBBER CORP. | Warren | Plastics and Rubber | 19.6K lbs | 7 |
| 167 | THERM-O-ROCK EAST INC | Donora | Nonmetallic Mineral Product | 19.4K lbs | 3 |
| 168 | MORGAN ADVANCED MATERIALS & TECHNOLOGY | Coudersport | Electrical Equipment | 17.9K lbs | 3 |
| 169 | CREATIVE PULTRUSIONS INC | Alum Bank | Plastics and Rubber | 17.8K lbs | 3 |
| 170 | BVPV STYRENICS LLC | Monaca | Plastics and Rubber | 17.6K lbs | 4 |
| 171 | AQUATIC CO | Elizabethtown | Plastics and Rubber | 17.5K lbs | 1 |
| 172 | CHANNELLOCK INC | Meadville | Fabricated Metals | 17.5K lbs | 2 |
| 173 | AVERY DENNISON MILL HALL | Mill Hall | Chemicals | 17.1K lbs | 13 |
| 174 | VEKA INC | Fombell | Plastics and Rubber | 16.6K lbs | 4 |
| 175 | CRC INDUSTRIES INC | Warminster | Chemicals | 16.4K lbs | 6 |
| 176 | INEOS COMPOSITES US LLC | Pittsburgh | Chemicals | 16.2K lbs | 8 |
| 177 | SEWARD POWER PLANT | New Florence | Electric Utilities | 16.2K lbs | 17 |
| 178 | CHEROKEE PHARMACEUTICALS LLC. | Riverside | Chemicals | 16.0K lbs | 5 |
| 179 | GELEST | Morrisville | Chemicals | 15.8K lbs | 2 |
| 180 | COOPERS CREEK CHEMICAL CORP | Conshohocken | Chemicals | 15.6K lbs | 17 |
| 181 | SPEER CARBON CO LLC | Saint Marys | Electrical Equipment | 15.5K lbs | 3 |
| 182 | BALL METAL BEVERAGE CONTAINER CORP | Pittston | Nonmetallic Mineral Product | 15.2K lbs | 5 |
| 183 | MATTHEWS INTERNATIONAL CORP | Pittsburgh | Primary Metals | 15.1K lbs | 3 |
| 184 | BONNEY FORGE CORP | Mount Union | Fabricated Metals | 14.9K lbs | 4 |
| 185 | UNIVAR SOLUTIONS USA - 4 STEEL ROAD MORRISVILLE PA | Morrisville | Chemical Wholesalers | 14.8K lbs | 7 |
| 186 | STANDARD STEEL LLC | Burnham | Primary Metals | 14.7K lbs | 7 |
| 187 | JERACO ENTERPRISES INC/MILTON PLT | Milton | Transportation Equipment | 14.6K lbs | 1 |
| 188 | LANCASTER LEAF TOBACCO CO. OF PA INC. | Lancaster | Tobacco | 14.3K lbs | 1 |
| 189 | YOUNG GALVANIZING INC | Pulaski | Fabricated Metals | 14.3K lbs | 4 |
| 190 | ALLEGHENY & TSINGSHAN STAINLESS LLC | Midland | Primary Metals | 14.2K lbs | 2 |
| 191 | DNP IMAGINGCOMM AMERICA CORP | Mount Pleasant | Miscellaneous Manufacturing | 14.2K lbs | 1 |
| 192 | PRYSMIAN CABLES & SYSTEMS USA LLC | Williamsport | Electrical Equipment | 14.1K lbs | 2 |
| 193 | HUNLOCK CREEK GENERATING LLC HUNLOCK CREEK ENERGY CENTER | Hunlock Creek | Electric Utilities | 14.0K lbs | 1 |
| 194 | JOHNSON MATTHEY INC | Wayne | Transportation Equipment | 13.9K lbs | 4 |
| 195 | GLEN-GERY CORP | Summerville | Nonmetallic Mineral Product | 13.9K lbs | 3 |
| 196 | ARKEMA WEST CHESTER PLANT | West Chester | Chemicals | 13.8K lbs | 5 |
| 197 | MCCONWAY & TORLEY LLC PLT 1801 | Pittsburgh | Primary Metals | 13.7K lbs | 7 |
| 198 | LATROBE SPECIALTY METALS | Latrobe | Primary Metals | 13.3K lbs | 8 |
| 199 | FROG SWITCH & MANUFACTURING CO | Carlisle | Primary Metals | 12.8K lbs | 1 |
| 200 | STELLA-JONES CORP | Dubois | Wood Products | 12.7K lbs | 3 |
| 201 | AVIENT CORP | Bethlehem | Chemicals | 12.7K lbs | 3 |
| 202 | WHEMCO-STEEL CASTINGS INC | Midland | Primary Metals | 12.6K lbs | 5 |
| 203 | STELLA - JONES CORP | Mc Alisterville | Wood Products | 12.5K lbs | 3 |
| 204 | RQ RESINS LLC | Harrison City | Chemicals | 12.5K lbs | 7 |
| 205 | FRANKLIN INVESTMENT CORP. | Franklin | Primary Metals | 12.5K lbs | 3 |
| 206 | VORTEQ VALENCIA LLC | Valencia | Fabricated Metals | 12.4K lbs | 8 |
| 207 | HEARTLAND FABRICATION LLC | Brownsville | Transportation Equipment | 12.4K lbs | 2 |
| 208 | PRECISION KIDD STEEL CO | West Aliquippa | Primary Metals | 12.3K lbs | 6 |
| 209 | NEVILLE CHEMICAL CO | Pittsburgh | Chemicals | 12.2K lbs | 10 |
| 210 | BLUESCOPE BUILDINGS NA | Annville | Fabricated Metals | 12.2K lbs | 6 |
| 211 | ADHESIVES RESEARCH INC | Glen Rock | Paper | 12.2K lbs | 3 |
| 212 | UNIVAR SOLUTIONS USA - MORRISVILLE BRANCH | Morrisville | Chemical Wholesalers | 11.7K lbs | 9 |
| 213 | MOLDED FIBER GLASS TRAY CO. | Linesville | Plastics and Rubber | 11.7K lbs | 1 |
| 214 | TAPCO TUBE CO/MEADVILLE | Meadville | Primary Metals | 11.3K lbs | 4 |
| 215 | LSC COMMUNICATIONS / LANCASTER EAST | Lancaster | Printing | 11.2K lbs | 1 |
| 216 | TOPPAN INTERAMERICA INC | Morgantown | Printing | 11.1K lbs | 2 |
| 217 | PLASTIC DEVELOPMENT CO | Williamsport | Plastics and Rubber | 11.0K lbs | 1 |
| 218 | CLARION BOARDS LLC MDF PLANT | Shippenville | Wood Products | 11.0K lbs | 2 |
| 219 | KALAS MANUFACTURING INC LANCASTER PLANT | Lancaster | Fabricated Metals | 10.9K lbs | 3 |
| 220 | BEAVER VALLEY ALLOY FOUNDRY CO | Monaca | Primary Metals | 10.8K lbs | 2 |
| 221 | THE AMES COS INC. | Harrisburg | Fabricated Metals | 10.7K lbs | 4 |
| 222 | DURA-BOND STEEL CORP | Export | Fabricated Metals | 10.6K lbs | 2 |
| 223 | INFINITY LTL | Morrisville | Chemicals | 10.5K lbs | 2 |
| 224 | KERRICO CORP | Selinsgrove | Plastics and Rubber | 10.4K lbs | 2 |
| 225 | VALMONT PITTSBURGH GALVANIZING | Midland | Fabricated Metals | 10.4K lbs | 1 |
| 226 | BASF CORP | Monaca | Chemicals | 10.4K lbs | 13 |
| 227 | CRODA INC | Mill Hall | Chemicals | 10.3K lbs | 7 |
| 228 | ETC NORTHEAST PIPELINE/GALAXY COMP STA | Parker | Natural Gas Processing | 10.3K lbs | 5 |
| 229 | KUNZLER & CO INC. | Lancaster | Food | 10.0K lbs | 1 |
| 230 | W R GRACE & CO | Tyrone | Chemicals | 9.8K lbs | 14 |
| 231 | RITCHEY METALS CO INC | Canonsburg | Primary Metals | 9.5K lbs | 4 |
| 232 | ASHLAND FOUNDRY & MACHINE WORKS | Ashland | Primary Metals | 9.5K lbs | 4 |
| 233 | BUZZI UNICEM STOCKERTOWN PLANT | Stockertown | Nonmetallic Mineral Product | 9.5K lbs | 8 |
| 234 | BUCK CO INC | Quarryville | Primary Metals | 9.4K lbs | 5 |
| 235 | KOPP GLASS INC | Pittsburgh | Nonmetallic Mineral Product | 9.4K lbs | 2 |
| 236 | JLG INDUSTRIES INC 1 JLG DRIVE FACILITY | Mc Connellsburg | Machinery | 9.2K lbs | 5 |
| 237 | INEOS COMPOSITES PHILADELPHIA PLANT | Philadelphia | Chemicals | 9.1K lbs | 9 |
| 238 | BAE SYSTEMS LAND & ARMAMENTS | York | Transportation Equipment | 9.0K lbs | 1 |
| 239 | ASCENT TUBULAR PRODUCTS | Munhall | Primary Metals | 8.9K lbs | 5 |
| 240 | MULTI-COLOR CORP | Tyrone | Printing | 8.9K lbs | 1 |
| 241 | PIEZO KINETICS INC | Bellefonte | Computers and Electronic Products | 8.7K lbs | 1 |
| 242 | INTERSTATE CHEMICAL CO INC | Hermitage | Chemical Wholesalers | 8.6K lbs | 18 |
| 243 | COLORCON | West Point | Chemicals | 8.6K lbs | 3 |
| 244 | CAN CORP OF AMERICA INC | Blandon | Fabricated Metals | 8.5K lbs | 9 |
| 245 | DURALOY TECHNOLOGIES INC | Scottdale | Primary Metals | 8.1K lbs | 3 |
| 246 | GENTEX CORP | Simpson | Textiles | 8.1K lbs | 2 |
| 247 | AMG TITANIUM LLC | New Castle | Fabricated Metals | 8.1K lbs | 4 |
| 248 | V&S KORNS GALVANIZING LLC | Johnstown | Fabricated Metals | 8.0K lbs | 1 |
| 249 | BLUESTONE GAS PLANT | Evans City | Natural Gas Processing | 7.9K lbs | 4 |
| 250 | SPECTRUM CONTROLINC | State College | Computers and Electronic Products | 7.6K lbs | 1 |
| 251 | MOUNTAIN RIDGE METALS LLC. | Millersburg | Primary Metals | 7.5K lbs | 2 |
| 252 | CLEVELAND-CLIFFS PLATE LLC CONSHOHOCKEN FACILITY | Conshohocken | Primary Metals | 7.5K lbs | 4 |
| 253 | MULTI-CHEM GROUP WASHINGTON PA FACILITY | Washington | Chemical Wholesalers | 7.3K lbs | 4 |
| 254 | CUSTOM PROCESSING SERVICES LLC | East Greenville | Nonmetallic Mineral Product | 7.2K lbs | 5 |
| 255 | ATI SPECIALTY MATERIALS LLC - OAKDALE | Oakdale | Fabricated Metals | 7.2K lbs | 3 |
| 256 | ASCENSUS SPECIALTIES CALLERY LLC | Evans City | Chemicals | 7.0K lbs | 6 |
| 257 | COUNTERTEK | Ephrata | Furniture | 7.0K lbs | 1 |
| 258 | AMAZON.COM SERVICES LLC | Norristown | Printing | 6.9K lbs | 1 |
| 259 | SSAB WEAR SOLUTIONS ASTRALLOY | Sharon | Fabricated Metals | 6.9K lbs | 4 |
| 260 | C-K COMPOSITES CO. LLC | Mount Pleasant | Plastics and Rubber | 6.9K lbs | 1 |
| 261 | DAIRY FARMERS OF AMERICA INC. | Reading | Food | 6.8K lbs | 2 |
| 262 | SKF USA INC HANOVER PLANT | Hanover | Transportation Equipment | 6.8K lbs | 4 |
| 263 | LORD CORP | Erie | Plastics and Rubber | 6.8K lbs | 1 |
| 264 | KNOLL INC | East Greenville | Furniture | 6.7K lbs | 4 |
| 265 | TECH TUBE | King Of Prussia | Primary Metals | 6.6K lbs | 3 |
| 266 | SILGAN WHITE CAP CORP | Hazleton | Fabricated Metals | 6.5K lbs | 5 |
| 267 | CCL CONTAINER AEROSOL DIV | Hermitage | Fabricated Metals | 6.5K lbs | 6 |
| 268 | V&S LEBANON GALVANIZING LLC | Jonestown | Fabricated Metals | 6.5K lbs | 2 |
| 269 | DONSCO INC | Wrightsville | Primary Metals | 6.4K lbs | 3 |
| 270 | TRS CERAMICS INC. DBA TRS TECHNOLOGIES | State College | Computers and Electronic Products | 6.4K lbs | 1 |
| 271 | PPG INDUSTRIES INC | Monroeville | Chemicals | 6.4K lbs | 2 |
| 272 | METALLURGICAL PRODUCTS CO | West Chester | Primary Metals | 6.3K lbs | 4 |
| 273 | DUPONT TOWANDA PLANT | Towanda | Chemicals | 6.3K lbs | 4 |
| 274 | BEDFORD REINFORCED PLASTICS INC | Bedford | Plastics and Rubber | 6.2K lbs | 2 |
| 275 | SPS TECHNOLOGIES LLC | Jenkintown | Fabricated Metals | 6.1K lbs | 4 |
| 276 | TAYLOR INDUSTRIES INC. | Parker Ford | Plastics and Rubber | 6.0K lbs | 1 |
| 277 | METALDYNE SINTERED COMPONENTS RIDGWAY | Ridgway | Fabricated Metals | 6.0K lbs | 3 |
| 278 | INTERMETRO INDUSTRIES CORP | Wilkes-barre | Machinery | 6.0K lbs | 4 |
| 279 | PUROLITE LLC | Philadelphia | Chemicals | 5.8K lbs | 1 |
| 280 | SILBERLINE MANUFACTURING CO INC | Tamaqua | Primary Metals | 5.8K lbs | 1 |
| 281 | CARGILL MEAT SOLUTIONS CORP | Wyalusing | Food | 5.7K lbs | 2 |
| 282 | GREENVILLE METALS INC | Transfer | Primary Metals | 5.7K lbs | 6 |
| 283 | HARLEY-DAVIDSON MOTOR CO OPERATIONS INC | York | Transportation Equipment | 5.7K lbs | 8 |
| 284 | ZIPPO MANUFACTURING CO | Bradford | Fabricated Metals | 5.7K lbs | 3 |
| 285 | AGC CHEMICALS AMERICAS INC | Downingtown | Chemicals | 5.6K lbs | 1 |
| 286 | TRI-CITY MARBLE LLC | Allentown | Plastics and Rubber | 5.6K lbs | 1 |
| 287 | INTERSTATE CHEMICAL CO UNITED ERIE | Erie | Chemical Wholesalers | 5.4K lbs | 6 |
| 288 | AMERICAN NICKELOID CO | Walnutport | Fabricated Metals | 5.3K lbs | 4 |
| 289 | HOUSTON GAS PLANT | Washington | Natural Gas Processing | 5.2K lbs | 5 |
| 290 | AMZ MANUFACTURING | York | Fabricated Metals | 5.2K lbs | 1 |
| 291 | FAIRCHILD SEMICONDUCTOR | Mountain Top | Computers and Electronic Products | 5.1K lbs | 4 |
| 292 | GEORGIA PACIFIC PANEL PRODUCTS LLC/MOUNT JEWETT MDF | Mount Jewett | Wood Products | 5.0K lbs | 2 |
| 293 | DART CONTAINER CORP OF PENNSYLVANIA | Leola | Chemicals | 5.0K lbs | 2 |
| 294 | KAWNEER CO INC | Bloomsburg | Fabricated Metals | 4.8K lbs | 6 |
| 295 | LANXESS CORP NEVILLE ISLAND | Pittsburgh | Chemicals | 4.8K lbs | 7 |
| 296 | PENNSYLVANIA TRANSFORMER TECHNOLOGY LLC | Canonsburg | Electrical Equipment | 4.7K lbs | 4 |
| 297 | SHARRETTS PLATING CO INC | Emigsville | Fabricated Metals | 4.7K lbs | 3 |
| 298 | JBS SOUDERTON INC-BEEF PLANT | Souderton | Food | 4.6K lbs | 2 |
| 299 | EVONIK CORP | Chester | Nonmetallic Mineral Product | 4.6K lbs | 2 |
| 300 | ROYAL CHEMICAL CO | East Stroudsburg | Chemicals | 4.6K lbs | 5 |
| 301 | MULTI-PLASTICS EXTRUSIONS INC. | Hazleton | Plastics and Rubber | 4.6K lbs | 2 |
| 302 | MORGAN ADVANCED MATERIALS ST MARYS SITE | Saint Marys | Electrical Equipment | 4.6K lbs | 3 |
| 303 | SHARON COATING LLC | Sharon | Fabricated Metals | 4.6K lbs | 6 |
| 304 | SPECIALTY RING PRODUCTS INC | Bensalem | Transportation Equipment | 4.5K lbs | 2 |
| 305 | DU-CO CERAMICS CO | Saxonburg | Nonmetallic Mineral Product | 4.5K lbs | 1 |
| 306 | EAGLE CASTING LLC. | Hanover | Primary Metals | 4.5K lbs | 3 |
| 307 | READING ALLOYS LLC | Robesonia | Primary Metals | 4.4K lbs | 7 |
| 308 | GOLD BOND BUILDING PRODUCTS - MILTON | New Columbia | Paper | 4.3K lbs | 2 |
| 309 | SMS GROUP INC | Oil City | Fabricated Metals | 4.3K lbs | 2 |
| 310 | PLEIGER PLASTICS CO | Washington | Plastics and Rubber | 4.2K lbs | 1 |
| 311 | PRESSURE CHEMICAL CO | Pittsburgh | Chemicals | 4.2K lbs | 7 |
| 312 | CARPENTER CO | Fogelsville | Plastics and Rubber | 4.2K lbs | 2 |
| 313 | UNIVAR SOLUTIONS USA - BUNOLA BRANCH | Bunola | Chemical Wholesalers | 4.2K lbs | 3 |
| 314 | HIGH STEEL STRUCTURES - WILLIAMSPORT FACILITY | Williamsport | Fabricated Metals | 4.2K lbs | 6 |
| 315 | PENNENGINEERING | Danboro | Fabricated Metals | 4.2K lbs | 4 |
| 316 | ELECTRIC MATERIALS CO | North East | Primary Metals | 4.2K lbs | 1 |
| 317 | FRONTIDA BIOPHARM LLC | Philadelphia | Chemicals | 4.1K lbs | 2 |
| 318 | KLEIN PLATING WORKS INC | Erie | Fabricated Metals | 4.1K lbs | 4 |
| 319 | ETC NORTHEAST FLD SVC LLC/PIKE COMP STA | Rochester | Natural Gas Processing | 4.1K lbs | 5 |
| 320 | HARMON CREEK GAS PLANT | Bulger | Natural Gas Processing | 4.1K lbs | 3 |
| 321 | REPUBLIC ENVIRONMENTAL SYSTEMS PENNSYLVANIA LLC | Hatfield | Hazardous Waste | 4.1K lbs | 1 |
| 322 | CHAMPION CARRIER CORP. | Hermitage | Transportation Equipment | 4.1K lbs | 2 |
| 323 | CORNELL COOKSON | Mountain Top | Fabricated Metals | 4.0K lbs | 8 |
| 324 | BORCHERS AMERICAS INC. | Franklin | Chemicals | 4.0K lbs | 9 |
| 325 | HOEGANAES CORP | Watsontown | Primary Metals | 3.9K lbs | 6 |
| 326 | SNAP-TITE HOSE/ UNION CITY | Union City | Plastics and Rubber | 3.8K lbs | 1 |
| 327 | MERSEN USA GS CORP. - ST MARYS | Saint Marys | Electrical Equipment | 3.8K lbs | 5 |
| 328 | CLEMENS FOOD GROUP (HATFIELD FACILITY) | Hatfield | Food | 3.7K lbs | 2 |
| 329 | BRIGHTSMITH LLC | Morrisville | Fabricated Metals | 3.7K lbs | 6 |
| 330 | AMG TITANIUM LLC | New Castle | Primary Metals | 3.6K lbs | 4 |
| 331 | MODERN INDUSTRIES KERSEY DIV | Kersey | Fabricated Metals | 3.6K lbs | 1 |
| 332 | CHEMALLOY CO LLC | Conshohocken | Primary Metals | 3.5K lbs | 4 |
| 333 | U.S. DEPARTMENT OF THE TREASURY U.S. MINT AT PHILADELPHIA | Philadelphia | Fabricated Metals | 3.4K lbs | 5 |
| 334 | KAWNEER CO INC. | Cranberry Township | Fabricated Metals | 3.4K lbs | 7 |
| 335 | COATING & CONVERTING TECHNOLOGIES CORP. | Philadelphia | Paper | 3.4K lbs | 2 |
| 336 | BOYERTOWN FOUNDRY CO | New Berlinville | Primary Metals | 3.3K lbs | 3 |
| 337 | LAKE ERIE BIOFUELS | Erie | Chemicals | 3.3K lbs | 1 |
| 338 | DUNMORE INTERNATIONAL CORP | Bristol | Plastics and Rubber | 3.3K lbs | 3 |
| 339 | CANPACK US | Olyphant | Fabricated Metals | 3.3K lbs | 7 |
| 340 | HIGH CONCRETE GROUP LLC - DENVER FACILITY | Denver | Nonmetallic Mineral Product | 3.3K lbs | 5 |
| 341 | BEAVER FALLS TUBULAR PRODUCTS LLC | Beaver Falls | Primary Metals | 3.3K lbs | 2 |
| 342 | AKDENIZ CHEMSON ADDITIVES INC | Philadelphia | Chemicals | 3.3K lbs | 4 |
| 343 | SCHOTT N.A. INC | Duryea | Nonmetallic Mineral Product | 3.3K lbs | 1 |
| 344 | CERA-MET | Bethlehem | Primary Metals | 3.2K lbs | 1 |
| 345 | ARBCO INDUSTRIES INC | Export | Plastics and Rubber | 3.2K lbs | 2 |
| 346 | GREIF INC | Warminster | Fabricated Metals | 3.2K lbs | 2 |
| 347 | AMERICAN TINNING & GALVANIZING CO. | Erie | Fabricated Metals | 3.2K lbs | 2 |
| 348 | DELAWARE VALLEY CUSTOM MARBLE INC | West Grove | Plastics and Rubber | 3.2K lbs | 1 |
| 349 | FARMERS PRIDE INC - PLANT 3 | Fredericksburg | Food | 3.1K lbs | 1 |
| 350 | THE FEDERAL METAL CO | Columbia | Primary Metals | 3.1K lbs | 8 |
| 351 | HAMMOND LEAD PRODUCTS | Pottstown | Chemicals | 3.0K lbs | 1 |
| 352 | METEM - A GE VERNOVA BUSINESS | Allentown | Fabricated Metals | 3.0K lbs | 5 |
| 353 | SUPELCO | Bellefonte | Computers and Electronic Products | 2.9K lbs | 2 |
| 354 | GICHNER SYSTEMS GROUP INC | Dallastown | Fabricated Metals | 2.8K lbs | 1 |
| 355 | SHERWIN-WILLIAMS CO | Pittsburgh | Chemicals | 2.8K lbs | 11 |
| 356 | DONSCO INC | Mount Joy | Primary Metals | 2.8K lbs | 3 |
| 357 | CORRY RUBBER CORP | Corry | Plastics and Rubber | 2.7K lbs | 1 |
| 358 | OLDCASTLE INFRASTRUCTURE | Telford | Nonmetallic Mineral Product | 2.7K lbs | 2 |
| 359 | NORTH AMERICAN HOGANAS HIGH ALLOYS LLC | Johnstown | Primary Metals | 2.6K lbs | 6 |
| 360 | QUAKER CITY CHEMICALS | Philadelphia | Chemical Wholesalers | 2.6K lbs | 7 |
| 361 | LINDE GAS & EQUIPMENT INC. | Morrisville | Chemical Wholesalers | 2.5K lbs | 2 |
| 362 | NALCO CO | Ellwood City | Chemicals | 2.5K lbs | 11 |
| 363 | J WALTER MILLER CO | Lancaster | Primary Metals | 2.4K lbs | 2 |
| 364 | ARXADA LLC | Williamsport | Chemicals | 2.4K lbs | 9 |
| 365 | CONCAST METAL PRODUCTS CO | Mars | Primary Metals | 2.4K lbs | 4 |
| 366 | GLEN-GERY CORP MID ATLA NTIC PLANT | Shoemakersville | Nonmetallic Mineral Product | 2.3K lbs | 2 |
| 367 | CHESTNUT RIDGE FOAM INC | Latrobe | Plastics and Rubber | 2.3K lbs | 4 |
| 368 | DAIRY FARMERS OF AMER/MECHANICSBURG | Mechanicsburg | Beverages | 2.2K lbs | 2 |
| 369 | HIGHSPIRE TERMINALS - DE LLC/HIGHSPIRE TERMINAL | Middletown | Petroleum Bulk Terminals | 2.2K lbs | 8 |
| 370 | CHURCH & DWIGHT CO INC | York | Chemicals | 2.1K lbs | 2 |
| 371 | HOUGHTON CHEMICAL CORP | Scranton | Chemical Wholesalers | 2.1K lbs | 2 |
| 372 | CURTISS WRIGHT ELECTRO MECH CORP | Cheswick | Machinery | 2.1K lbs | 3 |
| 373 | JOHN MIDDLETON CO KOP SITE | King Of Prussia | Tobacco | 2.1K lbs | 1 |
| 374 | ELLWOOD REMELT STEEL | New Castle | Primary Metals | 2.1K lbs | 3 |
| 375 | KORE MART LTD | Hamburg | Chemicals | 2.1K lbs | 2 |
| 376 | ANKER INDUSTRIES | Turtle Creek | Primary Metals | 2.0K lbs | 13 |
| 377 | AMPAL | Palmerton | Primary Metals | 2.0K lbs | 3 |
| 378 | LANGELOTH METALLURGICAL CO | Langeloth | Primary Metals | 1.9K lbs | 8 |
| 379 | CHESWICK PLANT ENVIRONMENTAL REDEVELOPMENT GROUP LLC | Springdale | Other | 1.9K lbs | 5 |
| 380 | PLAIN & FANCY KITCHENS | Schaefferstown | Furniture | 1.8K lbs | 1 |
| 381 | PENN FISHING TACKLE MANUFACTURING CO | Philadelphia | Miscellaneous Manufacturing | 1.8K lbs | 1 |
| 382 | AMZ MANUFACTURING CORP | York | Fabricated Metals | 1.8K lbs | 1 |
| 383 | EFFORT FOUNDRY INC | Bath | Primary Metals | 1.8K lbs | 4 |
| 384 | THE AMES COS INC. | Camp Hill | Fabricated Metals | 1.7K lbs | 4 |
| 385 | KOPPERS INC (SUSQUEHANNA) | Montgomery | Wood Products | 1.7K lbs | 3 |
| 386 | CULPEPER OF LEOLA LLC | Leola | Wood Products | 1.7K lbs | 1 |
| 387 | US PENITENTIARY CANAAN | Waymart | Other | 1.7K lbs | 1 |
| 388 | CHAMPIONX-HUGHESVILLE | Hughesville | Chemical Wholesalers | 1.7K lbs | 7 |
| 389 | WORLD ENERGY HARRISBURG LLC | Camp Hill | Food | 1.7K lbs | 1 |
| 390 | PRYSMIAN CABLES & SYSTEMS LLC | Schuylkill Haven | Electrical Equipment | 1.6K lbs | 4 |
| 391 | FLINCHBAUGH ENGINEERING INC. | York | Machinery | 1.6K lbs | 5 |
| 392 | SUNOCO LLC-RACE FUELS | Marcus Hook | Petroleum | 1.6K lbs | 10 |
| 393 | PENN UNION CO. LLC | Edinboro | Electrical Equipment | 1.5K lbs | 2 |
| 394 | MPLX TERMINALS LLC - MIDLAND PA TERMINAL | Industry | Petroleum Bulk Terminals | 1.5K lbs | 11 |
| 395 | TE CONNECTIVITY | Jonestown | Computers and Electronic Products | 1.5K lbs | 2 |
| 396 | AURORIUM DWG LLC | Delaware Water Gap | Chemicals | 1.5K lbs | 3 |
| 397 | ETC NORTHEAST PIPELINE LLC REVOLUTION CRYOGENIC PLANT | Bulger | Natural Gas Processing | 1.5K lbs | 3 |
| 398 | MET-PRO TECHNOLOGIES DBA FYBROC UNIT | Telford | Machinery | 1.5K lbs | 1 |
| 399 | ALLEGHENY PETROLEUM PRODUCTS CO | Wilmerding | Petroleum | 1.5K lbs | 6 |
| 400 | PECORA CORP | Harleysville | Chemicals | 1.4K lbs | 3 |
| 401 | CALUMET KARNS CITY REFINING LLC | Karns City | Petroleum | 1.4K lbs | 3 |
| 402 | I2M INC. | Mountain Top | Plastics and Rubber | 1.4K lbs | 5 |
| 403 | TANNER INDUSTRIES INC | Philadelphia | Chemical Wholesalers | 1.4K lbs | 1 |
| 404 | JOHNSON MATTHEY INC | Smithfield | Transportation Equipment | 1.4K lbs | 3 |
| 405 | ESSCHEM INC. | Linwood | Chemicals | 1.4K lbs | 2 |
| 406 | NORTHTEC BRISTOL | Bristol | Chemicals | 1.4K lbs | 1 |
| 407 | ALPHA ASSEMBLY SOLUTIONS | Altoona | Primary Metals | 1.4K lbs | 4 |
| 408 | GELEST INC | Glen Rock | Chemicals | 1.4K lbs | 7 |
| 409 | SAINT GOBAIN ABRASIVES INC | Montgomeryville | Nonmetallic Mineral Product | 1.4K lbs | 2 |
| 410 | DEPT OF HOMELAND SECURITY | Altoona | Fabricated Metals | 1.3K lbs | 1 |
| 411 | BEHR PROCESS LLC - ALLENTOWN | Allentown | Chemicals | 1.3K lbs | 5 |
| 412 | ACTION MANUFACTURING CO | Atglen | Chemicals | 1.3K lbs | 1 |
| 413 | AIRGAS SPECIALTY PRODUCTS-PALMERTON PA | Palmerton | Chemical Wholesalers | 1.3K lbs | 1 |
| 414 | WATSONTOWN BRICK CO | Watsontown | Nonmetallic Mineral Product | 1.3K lbs | 4 |
| 415 | TMS INTERNATIONAL LLC/NEW CASTLE PLT | New Castle | Hazardous Waste | 1.3K lbs | 5 |
| 416 | ALL-CLAD METALCRAFTERS LLC | Canonsburg | Fabricated Metals | 1.3K lbs | 5 |
| 417 | ALLEGHENY COATINGS | Ridgway | Fabricated Metals | 1.3K lbs | 1 |
| 418 | JUDSON A SMITH CO | Boyertown | Fabricated Metals | 1.2K lbs | 2 |
| 419 | NEW JERSEY SHELL CASTING CORP | Marietta | Primary Metals | 1.2K lbs | 2 |
| 420 | SHERWIN-WILLIAMS CO | Lebanon | Chemicals | 1.2K lbs | 7 |
| 421 | AIRGAS SPECIALTY PRODUCTS - DONORA PA | Donora | Chemical Wholesalers | 1.2K lbs | 1 |
| 422 | BRAEBURN ALLOY STEEL LLC | Lower Burrell | Primary Metals | 1.2K lbs | 6 |
| 423 | WESTERN INTERNATIONAL GAS & CYLINDERS INC. | Berwick | Chemical Wholesalers | 1.2K lbs | 1 |
| 424 | AHF PRODUCTS LANCASTER FACILITY | Lancaster | Plastics and Rubber | 1.2K lbs | 1 |
| 425 | LOZIER CORP | Mcclure | Furniture | 1.1K lbs | 4 |
| 426 | ARCOS INDUSTRIES LLC | Mount Carmel | Machinery | 1.1K lbs | 6 |
| 427 | ALLEGHENY SURFACE TECHNOLOGY | Lewis Run | Fabricated Metals | 1.1K lbs | 1 |
| 428 | PRECISIONFORM INC | Lititz | Fabricated Metals | 1.1K lbs | 6 |
| 429 | PITTSBURGH ELECTRICAL INSULATION | Munhall | Nonmetallic Mineral Product | 1.1K lbs | 2 |
| 430 | IWM - WIRE FACILITY | York | Primary Metals | 1.1K lbs | 2 |
| 431 | REAXIS INC | Mc Donald | Chemicals | 1.1K lbs | 1 |
| 432 | BULLEN COS | Folcroft | Chemicals | 1.1K lbs | 2 |
| 433 | ATI PRECISION FINISHING LLC - MONACA | Monaca | Fabricated Metals | 1.1K lbs | 3 |
| 434 | SAFETY-KLEEN SYSTEMS JOHNSTOWN (JOH) | Johnstown | Hazardous Waste | 1.0K lbs | 3 |
| 435 | AAADCG INC. ROCKWOOD DIV | Rockwood | Fabricated Metals | 1.0K lbs | 4 |
| 436 | ALLEGHENY PETROLEUM PRODUCTS CO | Ambridge | Petroleum | 1.0K lbs | 2 |
| 437 | CLEVELAND STEEL CONTAINER CORP | Quakertown | Fabricated Metals | 1.0K lbs | 2 |
| 438 | OMNIMAX INTERNATIONAL LLC | Lancaster | Fabricated Metals | 1.0K lbs | 8 |
| 439 | SIGNATURE CUSTOM CABINETRY | Ephrata | Furniture | 1.0K lbs | 1 |
| 440 | WELCH FOODS INC. | North East | Food | 1.0K lbs | 1 |
| 441 | VITRO FLAT GLASS LLC CARLISLE PLANT | Carlisle | Nonmetallic Mineral Product | 951 lbs | 3 |
| 442 | SAFETY-KLEEN SYSTEMS WEST MIFFLIN (WMP) | West Mifflin | Hazardous Waste | 937 lbs | 4 |
| 443 | ST ENGINEERING HACKNEY INC | Montgomery | Transportation Equipment | 920 lbs | 1 |
| 444 | ARDEX LABORATORIES INC | Philadelphia | Chemicals | 897 lbs | 3 |
| 445 | VORTEQ COIL FINISHERS LLC | Allentown | Fabricated Metals | 882 lbs | 6 |
| 446 | POLYSCIENCES INC | Warrington | Chemicals | 882 lbs | 3 |
| 447 | DBA RSI METAL LITHO GREENVILLE | Greenville | Fabricated Metals | 879 lbs | 2 |
| 448 | KLOECKNER METALS CORP | York | Fabricated Metals | 866 lbs | 4 |
| 449 | PARKER HANNIFIN/QUICK COUPLING DIV | Union City | Fabricated Metals | 853 lbs | 2 |
| 450 | PRL INDUSTRIES INC. FOUNDRY OPERATIONS | Lebanon | Primary Metals | 852 lbs | 3 |
| 451 | SUN CHEMICAL CORP | Philadelphia | Chemicals | 844 lbs | 1 |
| 452 | MILLER CENTRIFUGAL CASTING CO | Mc Donald | Primary Metals | 817 lbs | 4 |
| 453 | WSP SOLVAY GROUP | Castanea | Chemicals | 790 lbs | 3 |
| 454 | GE TRANSPORTATION GROVE CITY UX PLANT | Grove City | Machinery | 780 lbs | 5 |
| 455 | ORBEL CORP | Easton | Fabricated Metals | 770 lbs | 1 |
| 456 | PIAD PRECISION CASTING CORP | Greensburg | Primary Metals | 760 lbs | 1 |
| 457 | NATIONAL ELECTRICAL CARBON PRODUCTS INC | East Stroudsburg | Electrical Equipment | 758 lbs | 3 |
| 458 | PENN COLOR INC. | Hatfield | Chemicals | 756 lbs | 10 |
| 459 | MITSUBISHI CHEMICAL ADVANCED MATERIALS | Scranton | Plastics and Rubber | 754 lbs | 1 |
| 460 | LATROBE SPECIALTY METALS - SANDY CREEK | Franklin | Primary Metals | 752 lbs | 5 |
| 461 | GRAFTECH USA LLC | Saint Marys | Electrical Equipment | 751 lbs | 3 |
| 462 | METALDYNE SINTERED STMARYS | Saint Marys | Fabricated Metals | 750 lbs | 3 |
| 463 | SCHEERER BEARING CORP | Willow Grove | Fabricated Metals | 750 lbs | 2 |
| 464 | DSM BIOMEDICAL | Exton | Miscellaneous Manufacturing | 750 lbs | 1 |
| 465 | MISCO PRODUCTS CORP | Reading | Chemicals | 748 lbs | 4 |
| 466 | GLAXOSMITHKLINE LLC | Collegeville | Chemicals | 739 lbs | 1 |
| 467 | ERIE PLATING CO | Erie | Fabricated Metals | 731 lbs | 1 |
| 468 | HENRY CO | Kimberton | Petroleum | 708 lbs | 2 |
| 469 | ST. MARYS CARBON CO INC | Saint Marys | Electrical Equipment | 708 lbs | 2 |
| 470 | LEBANON SEABOARD CORP | Lebanon | Chemicals | 705 lbs | 6 |
| 471 | UFP STOCKERTOWN LLC | Stockertown | Wood Products | 702 lbs | 3 |
| 472 | OWENS-BROCKWAY GLASS CONTAINER INC PLANT 18 | Brockway | Nonmetallic Mineral Product | 678 lbs | 2 |
| 473 | ARDAGH GLASS INC | Port Allegany | Nonmetallic Mineral Product | 667 lbs | 3 |
| 474 | SIKA CORP (FORMER MASTER BUILDERS SOLUTIONS CONSTRUCTION SYS | Levittown | Chemicals | 648 lbs | 2 |
| 475 | HOEGANAES CORP | Ridgway | Fabricated Metals | 627 lbs | 3 |
| 476 | NATIONAL REFRIGERATION & A/C PRODUCTS | Bensalem | Machinery | 626 lbs | 4 |
| 477 | CHASE CORP - PITTSBURGH | Pittsburgh | Chemicals | 610 lbs | 4 |
| 478 | U.S. BUREAU OF PRISONS FCI SCHUYLKILL | Minersville | Other | 586 lbs | 1 |
| 479 | HARD CHROME SPECIALISTS INC/YORK | York | Fabricated Metals | 586 lbs | 1 |
| 480 | MILLER WELDING & MACHINE CO | Brookville | Fabricated Metals | 583 lbs | 1 |
| 481 | EAST PENN MFG CO INC KUTZTOWN WIRE & CABLE DIV | Kutztown | Primary Metals | 581 lbs | 3 |
| 482 | CUSTOM LAMINATING CORP | Mount Bethel | Fabricated Metals | 579 lbs | 1 |
| 483 | NATIONAL CHEMICAL LABORATORIES INC | Philadelphia | Chemicals | 569 lbs | 3 |
| 484 | MACK TRUCKS INC. | Macungie | Transportation Equipment | 561 lbs | 2 |
| 485 | MM METALS USA LLC | Fairless Hills | Primary Metals | 556 lbs | 3 |
| 486 | MOUNTAIN GATHERING LLC - PENN CRYO FACILITY | Renfrew | Natural Gas Processing | 548 lbs | 1 |
| 487 | CORRY MANUFACTURING CO | Corry | Transportation Equipment | 540 lbs | 2 |
| 488 | TATE ACCESS FLOORS INC. | Red Lion | Fabricated Metals | 533 lbs | 6 |
| 489 | POLYGLASS USA INC | Hazleton | Petroleum | 530 lbs | 1 |
| 490 | KEYSTONE POWDERED METAL CO | Saint Marys | Fabricated Metals | 529 lbs | 3 |
| 491 | ELLWOOD CITY FORGE CORP | Ellwood City | Fabricated Metals | 521 lbs | 4 |
| 492 | UNIVERSAL STAINLESS & ALLOY PRODUCTS INC | Bridgeville | Primary Metals | 514 lbs | 5 |
| 493 | GASBARRE THERMAL PROCESSING SYSTEMS | Saint Marys | Machinery | 513 lbs | 2 |
| 494 | PARKER AUTOCLAVE ENGINEERS / INSTRUMENT PRODUCTS DIV | Erie | Fabricated Metals | 510 lbs | 2 |
| 495 | LIBRANDI'S MACHINE INC. | Middletown | Fabricated Metals | 505 lbs | 2 |
| 496 | YOUNG INDUSTRIES INC | Muncy | Machinery | 504 lbs | 2 |
| 497 | KEYSTONE RUSTPROOFING INC. | New Kensington | Fabricated Metals | 500 lbs | 1 |
| 498 | JOY GLOBAL UNDERGROUND MINING LLC | Homer City | Other | 500 lbs | 1 |
| 499 | SPECIALTY FABRICATION & POWDER COATING LLC | Oil City | Fabricated Metals | 500 lbs | 1 |
| 500 | SPECIALTY FABRICATION & POWDER COATING LLC | Franklin | Fabricated Metals | 500 lbs | 1 |