| 1 | Max Environmental -- Yukon Facility | Yukon | Hazardous Waste | 34.8M lbs | 18 |
| 2 | Uss Mon Valley Works - Edgar Thomson Plant | Braddock | Primary Metals | 21.4M lbs | 21 |
| 3 | Uss-Clairton Plant | Clairton | Petroleum | 18.5M lbs | 32 |
| 4 | Cleveland-Cliffs Steel Corp /butler Works | Butler | Primary Metals | 12.8M lbs | 12 |
| 5 | International Metals Reclamation Co LLC Inmetco | Ellwood City | Primary Metals | 9.6M lbs | 8 |
| 6 | Conemaugh Generating Station | New Florence | Electric Utilities | 9.0M lbs | 26 |
| 7 | Homer City Generation LP | Homer City | Electric Utilities | 6.1M lbs | 20 |
| 8 | Keystone Power Plant | Shelocta | Electric Utilities | 6.0M lbs | 27 |
| 9 | Carpenter Technology Corp | Reading | Primary Metals | 5.8M lbs | 21 |
| 10 | Saint Nicholas Cogeneration Project | Shenandoah | Electric Utilities | 4.7M lbs | 26 |
| 11 | Envirite of Pennsylvania Inc | York | Hazardous Waste | 4.5M lbs | 22 |
| 12 | Colver Green Energy | Colver | Electric Utilities | 4.2M lbs | 19 |
| 13 | Ati Flat Rolled Products Holdings LLC | Vandergrift | Primary Metals | 3.6M lbs | 9 |
| 14 | Gilberton Power Co | Frackville | Electric Utilities | 3.5M lbs | 19 |
| 15 | Jbs Souderton Inc - Rendering Div | Souderton | Food | 3.0M lbs | 2 |
| 16 | Scrubgrass Generating Plant | Kennerdell | Electric Utilities | 2.9M lbs | 19 |
| 17 | Pixelle Specialty Solutions LLC | Spring Grove | Paper | 2.9M lbs | 22 |
| 18 | Woodgrain Inc. | Wysox | Wood Products | 2.6M lbs | 15 |
| 19 | Rausch Creek Generation LLC | Tremont | Electric Utilities | 2.6M lbs | 16 |
| 20 | East Penn Manufacturing Co Inc | Lyon Station | Electrical Equipment | 2.5M lbs | 6 |
| 21 | Apollo Metals Ltd | Bethlehem | Fabricated Metals | 2.4M lbs | 4 |
| 22 | Cycle Chem Inc | Lewisberry | Hazardous Waste | 2.4M lbs | 14 |
| 23 | Shell Chemical Appalachia LLC | Monaca | Chemicals | 2.2M lbs | 11 |
| 24 | Monroe Energy Llc-Trainer Refinery | Trainer | Petroleum | 2.1M lbs | 38 |
| 25 | Panther Creek Power Operating LLC | Nesquehoning | Electric Utilities | 2.1M lbs | 14 |
| 26 | Northampton Generating Plant | Northampton | Electric Utilities | 2.1M lbs | 18 |
| 27 | Global Advanced Metals USA | Boyertown | Primary Metals | 2.1M lbs | 11 |
| 28 | Synthomer Jefferson Hills LLC | Jefferson Hills | Chemicals | 2.0M lbs | 12 |
| 29 | Ebensburg Power Co | Ebensburg | Electric Utilities | 1.8M lbs | 11 |
| 30 | Armstrong World Industries | Marietta | Miscellaneous Manufacturing | 1.6M lbs | 6 |
| 31 | International Waxes Inc | Smethport | Petroleum | 1.6M lbs | 9 |
| 32 | Ellwood Quality Steels Co | New Castle | Primary Metals | 1.5M lbs | 9 |
| 33 | Gaf Keystone Llc/new Columbia Facility | New Columbia | Plastics and Rubber | 1.4M lbs | 1 |
| 34 | Domtar - Johnsonburg Mill | Johnsonburg | Paper | 1.4M lbs | 14 |
| 35 | Advansix Resins & Chemicals LLC | Philadelphia | Chemicals | 1.3M lbs | 10 |
| 36 | Perdue Agribusiness LLC - Bainbridge Pa | Marietta | Food | 1.2M lbs | 2 |
| 37 | American Tinning & Galvanizing Co. | Erie | Fabricated Metals | 1.2M lbs | 2 |
| 38 | Global Tungsten & Powders LLC | Towanda | Primary Metals | 1.1M lbs | 10 |
| 39 | Clarion Bathware | Marble | Plastics and Rubber | 1.1M lbs | 3 |
| 40 | Tenaris Koppel | Koppel | Primary Metals | 1.0M lbs | 10 |
| 41 | Am Stabilizers Corp | Franklin | Chemicals | 933.9K lbs | 4 |
| 42 | North American Hoganas | Hollsopple | Primary Metals | 933.0K lbs | 13 |
| 43 | Keystone Protein Co | Fredericksburg | Food | 886.5K lbs | 3 |
| 44 | Union Electric Steel Corp | Burgettstown | Machinery | 821.0K lbs | 4 |
| 45 | Befesa Zinc US Inc. | Palmerton | Primary Metals | 807.1K lbs | 8 |
| 46 | Superior Tube Co Inc | Collegeville | Primary Metals | 777.8K lbs | 5 |
| 47 | Master Woodcraft Cabinetry LLC | Thompsontown | Furniture | 764.0K lbs | 5 |
| 48 | Uss Mon Valley Works - Irvin Plant | West Mifflin | Primary Metals | 747.4K lbs | 10 |
| 49 | Carlisle Syntec a Div of Carlisle Construction Materia | Carlisle | Plastics and Rubber | 741.6K lbs | 8 |
| 50 | Brunner Island Steam Electric Station | York Haven | Electric Utilities | 731.5K lbs | 13 |
| 51 | Tyson Poultry Inc-New Holland Complex | New Holland | Food | 672.5K lbs | 4 |
| 52 | Nov Fiber Glass Systems - Containment Solutions | Mount Union | Plastics and Rubber | 670.9K lbs | 2 |
| 53 | Essroc Cement Corp | Nazareth | Nonmetallic Mineral Product | 662.6K lbs | 10 |
| 54 | Montour Steam Electric Station | Danville | Electric Utilities | 657.1K lbs | 12 |
| 55 | Ervin Industries in Amasteel Div | Butler | Nonmetallic Mineral Product | 641.7K lbs | 1 |
| 56 | Basf Corp | Erie | Chemicals | 638.4K lbs | 12 |
| 57 | Ppg Industriesinc-Springdale Complex | Springdale | Chemicals | 634.9K lbs | 33 |
| 58 | Mount Carmel Cogen Facility | Marion Heights | Electric Utilities | 632.6K lbs | 9 |
| 59 | Lsc Communications / Lancaster East | Lancaster | Printing | 628.1K lbs | 6 |
| 60 | Ward Manufacturing LLC | Blossburg | Primary Metals | 616.0K lbs | 6 |
| 61 | McConway & Torley LLC Plt 1801 | Pittsburgh | Primary Metals | 613.7K lbs | 12 |
| 62 | American Refining Group Inc. | Bradford | Petroleum | 607.1K lbs | 15 |
| 63 | Zekelman Industries Co DBA Wheatland Tube Co-Council | Wheatland | Primary Metals | 582.7K lbs | 8 |
| 64 | Rq Resins LLC | Harrison City | Chemicals | 582.2K lbs | 17 |
| 65 | Sonneborn LLC | Petrolia | Petroleum | 574.0K lbs | 6 |
| 66 | Calgon Carbon Corp Neville Island Plant | Pittsburgh | Chemicals | 566.5K lbs | 11 |
| 67 | Advanced Polymer Technology | Evans City | Chemicals | 565.9K lbs | 9 |
| 68 | Ifs Industries Inc | Reading | Chemicals | 548.0K lbs | 4 |
| 69 | Moxie Freedom | Berwick | Electric Utilities | 544.6K lbs | 1 |
| 70 | Dairy Farmers of America Inc | New Wilmington | Food | 523.8K lbs | 2 |
| 71 | Versum Materials US LLC | Tamaqua | Chemicals | 521.2K lbs | 11 |
| 72 | Tech Met Inc. | Glassport | Fabricated Metals | 517.8K lbs | 3 |
| 73 | US Army National Guard Fort Indiantown Gap-Wwtp | Annville | Other | 512.5K lbs | 3 |
| 74 | Jessop Steel LLC | Washington | Primary Metals | 511.9K lbs | 8 |
| 75 | Dura-Bond Pipe LLC | Steelton | Fabricated Metals | 511.3K lbs | 4 |
| 76 | Cleveland-Cliffs Plate LLC Coatesville Facility | Coatesville | Primary Metals | 507.2K lbs | 10 |
| 77 | Esab Group Inc. | Hanover | Machinery | 503.1K lbs | 7 |
| 78 | Advanced Cast Products Inc | Meadville | Primary Metals | 492.8K lbs | 4 |
| 79 | Cambridge-Lee Industries | Reading | Primary Metals | 485.8K lbs | 2 |
| 80 | Punxsutawney Finishing Works | Punxsutawney | Fabricated Metals | 477.0K lbs | 5 |
| 81 | Zekelman Industries, Sharon Tube Division-Church St | Farrell | Primary Metals | 457.5K lbs | 4 |
| 82 | Bruce Mansfield Power Plant | Shippingport | Electric Utilities | 455.7K lbs | 10 |
| 83 | Allegheny & Tsingshan Stainless LLC | Midland | Primary Metals | 455.6K lbs | 11 |
| 84 | Geo Specialty Chemicals Trimet Products Group | Allentown | Chemicals | 449.6K lbs | 6 |
| 85 | Magnesita Refractories Co | York | Nonmetallic Mineral Product | 437.0K lbs | 8 |
| 86 | Conestoga Wood Specialties Corp | East Earl | Wood Products | 433.7K lbs | 7 |
| 87 | Appvion Operations Inc | Roaring Spring | Paper | 428.2K lbs | 9 |
| 88 | Salem Tube Inc. | Greenville | Primary Metals | 426.7K lbs | 4 |
| 89 | Philadelphia Energy Solutions Refining Philadelphia Refinery | Philadelphia | Petroleum | 410.0K lbs | 27 |
| 90 | Hydro Extrusion USA LLC | Cressona | Primary Metals | 405.8K lbs | 7 |
| 91 | Mars Wrigley US LLC | Elizabethtown | Food | 386.0K lbs | 1 |
| 92 | United Refining Co | Warren | Petroleum | 384.4K lbs | 21 |
| 93 | Victaulic Co - Alburtis Facility | Alburtis | Primary Metals | 381.7K lbs | 5 |
| 94 | Ellwood National Forge Co | Irvine | Fabricated Metals | 377.5K lbs | 7 |
| 95 | Viant Collegeville LLC | Trappe | Primary Metals | 368.8K lbs | 7 |
| 96 | Wheelabrator Frackville Energy Co Inc | Frackville | Electric Utilities | 365.7K lbs | 16 |
| 97 | Glen-Gery Corp | Summerville | Nonmetallic Mineral Product | 364.5K lbs | 5 |
| 98 | Truck Accessories Group. LLC DBA Tag East | Milton | Transportation Equipment | 356.3K lbs | 1 |
| 99 | Cheswick Plant Environmental Redevelopment Group LLC | Springdale | Electric Utilities | 344.1K lbs | 14 |
| 100 | Materion Brush Inc | Shoemakersville | Primary Metals | 342.6K lbs | 5 |
| 101 | Nestle Purina Petcare Co | Allentown | Food | 339.3K lbs | 3 |
| 102 | Andritz Inc. | Muncy | Machinery | 324.3K lbs | 9 |
| 103 | Young Galvanizing Inc | Pulaski | Fabricated Metals | 323.9K lbs | 4 |
| 104 | Asc Engineered Solutions - Fka Anvil International | Columbia | Primary Metals | 319.4K lbs | 5 |
| 105 | Braskem America Inc | Marcus Hook | Chemicals | 305.6K lbs | 3 |
| 106 | Modern Industries Inc. | Erie | Transportation Equipment | 303.8K lbs | 1 |
| 107 | Avient Corp | Bethlehem | Chemicals | 303.4K lbs | 7 |
| 108 | Ati Flat Rolled Products Holdings LLC | Brackenridge | Primary Metals | 294.7K lbs | 11 |
| 109 | High Steel Structures - Lancaster Facility | Lancaster | Fabricated Metals | 291.4K lbs | 7 |
| 110 | Heidelberg Materials US Cement LLC - Evansville | Fleetwood | Nonmetallic Mineral Product | 287.5K lbs | 12 |
| 111 | Yuasa Battery Inc. | Laureldale | Electrical Equipment | 285.5K lbs | 6 |
| 112 | V&s Korns Galvanizing LLC | Johnstown | Fabricated Metals | 284.8K lbs | 1 |
| 113 | Johnstown Wire Technologies Inc. | Johnstown | Primary Metals | 270.5K lbs | 7 |
| 114 | Farmer's Pride Inc | Fredericksburg | Food | 262.8K lbs | 4 |
| 115 | Haysite Reinforced Plastics LLC | Erie | Plastics and Rubber | 261.8K lbs | 3 |
| 116 | Entegris Inc. | Chester | Chemicals | 247.2K lbs | 6 |
| 117 | Parker Lord Corp | Saegertown | Chemicals | 246.7K lbs | 21 |
| 118 | Gelest Inc | Morrisville | Chemicals | 244.8K lbs | 5 |
| 119 | McClarin Plastics LLC | Hanover | Plastics and Rubber | 243.0K lbs | 3 |
| 120 | Victaulic Co - Forks Facility | Easton | Primary Metals | 240.0K lbs | 8 |
| 121 | Coherent Corp. | Saxonburg | Machinery | 239.6K lbs | 4 |
| 122 | Steel Management Systems LLC | Nazareth | Fabricated Metals | 230.1K lbs | 1 |
| 123 | Libertas Copper LLC | Leetsdale | Primary Metals | 228.8K lbs | 6 |
| 124 | V&s Lebanon Galvanizing LLC | Jonestown | Fabricated Metals | 226.1K lbs | 2 |
| 125 | Cleveland-Cliffs Monessen Coke LLC | Monessen | Petroleum | 225.9K lbs | 21 |
| 126 | Electralloy | Oil City | Primary Metals | 225.8K lbs | 8 |
| 127 | Flexsys America LP | Monongahela | Chemicals | 218.6K lbs | 2 |
| 128 | Lamtec Corp | Mount Bethel | Paper | 214.3K lbs | 3 |
| 129 | The Procter & Gamble Paper Products Co | Tunkhannock | Paper | 213.6K lbs | 6 |
| 130 | Land O'Lakes - Carlisle | Carlisle | Food | 207.7K lbs | 2 |
| 131 | Alleima Precision Tube | Scottdale | Primary Metals | 206.5K lbs | 4 |
| 132 | Whitford Corp | Elverson | Chemicals | 206.1K lbs | 5 |
| 133 | U.S. Army Letterkenny Army Depot | Chambersburg | Other | 204.9K lbs | 6 |
| 134 | Edsal Manufacturing | Littlestown | Furniture | 202.4K lbs | 3 |
| 135 | American Craft Brewery LLC | Breinigsville | Beverages | 197.3K lbs | 4 |
| 136 | Holcim (us) Inc. - Whitehall Plant | Whitehall | Nonmetallic Mineral Product | 197.1K lbs | 11 |
| 137 | Cleveland-Cliffs Steelton LLC | Steelton | Primary Metals | 194.4K lbs | 8 |
| 138 | Wood-Mode LLC | Kreamer | Furniture | 192.5K lbs | 5 |
| 139 | Calpine Mid Merit LLC York Energy Center | Delta | Electric Utilities | 190.7K lbs | 6 |
| 140 | L&m Fabrication & Machine Inc. (south) | Bath | Fabricated Metals | 180.3K lbs | 4 |
| 141 | Altuglas LLC | Bristol | Chemicals | 179.6K lbs | 4 |
| 142 | J-Lok Co | Cresson | Chemicals | 177.0K lbs | 1 |
| 143 | The Ames Cos Inc. | Harrisburg | Fabricated Metals | 175.4K lbs | 5 |
| 144 | Jones Performance Products Inc. | West Middlesex | Transportation Equipment | 169.5K lbs | 1 |
| 145 | Akzo Nobel Coatings Inc. | Reading | Chemicals | 165.7K lbs | 3 |
| 146 | Darling Ingredients Inc. - Terre Hill Facility | East Earl | Food | 160.0K lbs | 2 |
| 147 | Rohm & Haas Chemicals LLC | Bristol | Chemicals | 158.7K lbs | 18 |
| 148 | Vitro Meadville Flat Glass LLC | Cochranton | Nonmetallic Mineral Product | 156.1K lbs | 5 |
| 149 | Keystone Cement Co | Bath | Nonmetallic Mineral Product | 155.4K lbs | 53 |
| 150 | Sherwin-Williams Co | Rochester | Chemicals | 153.0K lbs | 20 |
| 151 | Dynamet Inc | Washington | Primary Metals | 149.5K lbs | 3 |
| 152 | Arconic US LLC | Lancaster | Primary Metals | 149.4K lbs | 13 |
| 153 | Nlmk Pennsylvania LLC | Farrell | Primary Metals | 147.9K lbs | 7 |
| 154 | Reading Truck Body | Reading | Transportation Equipment | 147.7K lbs | 2 |
| 155 | Westinghouse Electric Co | Blairsville | Primary Metals | 147.4K lbs | 3 |
| 156 | Kenvue Brands LLC | Lititz | Chemicals | 147.4K lbs | 1 |
| 157 | Liberty Pultrusions | West Mifflin | Plastics and Rubber | 138.4K lbs | 1 |
| 158 | Ardagh Glass Inc | Port Allegany | Nonmetallic Mineral Product | 137.6K lbs | 5 |
| 159 | Tech Met Inc | Donora | Fabricated Metals | 137.0K lbs | 2 |
| 160 | Bedford Technical Products LLC | Manns Choice | Paper | 133.4K lbs | 4 |
| 161 | Rynone Manufacturing Corp | Sayre | Plastics and Rubber | 132.2K lbs | 1 |
| 162 | Molded Fiber Glass / Union City | Union City | Plastics and Rubber | 131.2K lbs | 2 |
| 163 | Wickett & Craig of America | Curwensville | Leather | 131.0K lbs | 2 |
| 164 | Bethlehem Apparatus Co Inc | Hellertown | Chemicals | 129.1K lbs | 1 |
| 165 | Tms International LLC | Braddock | Hazardous Waste | 128.9K lbs | 11 |
| 166 | Victaulic Co - Lawrenceville Facility | Tioga | Primary Metals | 126.5K lbs | 6 |
| 167 | Great Lakes Metal Finishing Inc. | Erie | Fabricated Metals | 123.5K lbs | 4 |
| 168 | Cherokee Pharmaceuticals Llc. | Riverside | Chemicals | 123.3K lbs | 5 |
| 169 | Jamestown Coating Technologies | Jamestown | Chemicals | 123.0K lbs | 4 |
| 170 | Bethlehem Energy Center | Bethlehem | Electric Utilities | 122.3K lbs | 5 |
| 171 | Dana Driveshaft Products LLC | Pottstown | Transportation Equipment | 116.3K lbs | 3 |
| 172 | Alleima USA LLC | Clarks Summit | Primary Metals | 116.1K lbs | 5 |
| 173 | Johnson Matthey Inc | Wayne | Transportation Equipment | 113.4K lbs | 5 |
| 174 | Aberdeen Road Co | Emigsville | Textiles | 108.3K lbs | 3 |
| 175 | Bluescope Buildings Na | Annville | Fabricated Metals | 106.7K lbs | 7 |
| 176 | Armstrong Cement & Supply Corp | Cabot | Nonmetallic Mineral Product | 104.0K lbs | 4 |
| 177 | Mount Joy Wire Corp | Mount Joy | Primary Metals | 103.3K lbs | 4 |
| 178 | Lehigh Specialty Melting Inc | Latrobe | Primary Metals | 101.7K lbs | 5 |
| 179 | General Carbide Corp | Greensburg | Machinery | 101.0K lbs | 1 |
| 180 | Hanwha Philly Shipyard Inc | Philadelphia | Transportation Equipment | 98.9K lbs | 10 |
| 181 | Coopers Creek Chemical Corp | Conshohocken | Chemicals | 96.5K lbs | 19 |
| 182 | Avery Dennison Mill Hall | Mill Hall | Chemicals | 95.8K lbs | 13 |
| 183 | Ohd Thermacore Inc. | Williamsport | Fabricated Metals | 94.7K lbs | 3 |
| 184 | Seward Power Plant | New Florence | Electric Utilities | 93.6K lbs | 22 |
| 185 | Custom Processing Services LLC | East Greenville | Nonmetallic Mineral Product | 93.1K lbs | 13 |
| 186 | W R Grace & Co | Tyrone | Chemicals | 92.5K lbs | 17 |
| 187 | Frog Switch & Manufacturing Co | Carlisle | Primary Metals | 92.3K lbs | 7 |
| 188 | Sps Technologies LLC | Jenkintown | Fabricated Metals | 91.0K lbs | 9 |
| 189 | Jbs Souderton Inc-Beef Plant | Souderton | Food | 90.6K lbs | 2 |
| 190 | Crc Industries Inc | Warminster | Chemicals | 88.5K lbs | 9 |
| 191 | Pennsylvania Grain Processing LLC | Clearfield | Chemicals | 86.8K lbs | 8 |
| 192 | Franklin Investment Corp. | Franklin | Primary Metals | 86.6K lbs | 3 |
| 193 | Lord Corp | Erie | Plastics and Rubber | 85.8K lbs | 3 |
| 194 | Overhead Door Corp-Pennsylvania Div | Lewistown | Fabricated Metals | 84.4K lbs | 3 |
| 195 | Morgan Advanced Materials & Technology | Coudersport | Electrical Equipment | 83.5K lbs | 3 |
| 196 | Clarion Boards LLC Mdf Plant | Shippenville | Wood Products | 81.9K lbs | 2 |
| 197 | Ineos Composites US LLC | Pittsburgh | Chemicals | 81.3K lbs | 8 |
| 198 | Bvpv Styrenics LLC | Monaca | Chemicals | 80.4K lbs | 4 |
| 199 | Dart Container Corp of Pennsylvania | Leola | Chemicals | 79.4K lbs | 2 |
| 200 | Dauphin Precision Tool LLC | Millersburg | Machinery | 79.0K lbs | 1 |
| 201 | Ascent Tubular Products | Munhall | Primary Metals | 78.5K lbs | 6 |
| 202 | Aquatic Co | Elizabethtown | Plastics and Rubber | 78.1K lbs | 1 |
| 203 | Kerrico Corp | Selinsgrove | Plastics and Rubber | 77.9K lbs | 2 |
| 204 | Vorteq Valencia LLC | Valencia | Fabricated Metals | 77.9K lbs | 9 |
| 205 | Therm-O-Rock East Inc | Donora | Nonmetallic Mineral Product | 76.8K lbs | 3 |
| 206 | Neville Chemical Co | Pittsburgh | Chemicals | 75.7K lbs | 10 |
| 207 | Mountain Ridge Metals Llc. | Millersburg | Primary Metals | 73.9K lbs | 3 |
| 208 | Webco Industries Inc. Oil City Tube Div | Oil City | Primary Metals | 73.7K lbs | 4 |
| 209 | Plastic Development Co | Williamsport | Plastics and Rubber | 73.7K lbs | 1 |
| 210 | Superior Tire & Rubber Corp. | Warren | Plastics and Rubber | 73.6K lbs | 7 |
| 211 | Molded Fiber Glass Tray Co. | Linesville | Plastics and Rubber | 72.4K lbs | 1 |
| 212 | Matthews International Corp | Pittsburgh | Primary Metals | 72.3K lbs | 3 |
| 213 | Dnp Imagingcomm America Corp | Mount Pleasant | Miscellaneous Manufacturing | 71.2K lbs | 1 |
| 214 | Arkema West Chester Plant | West Chester | Chemicals | 69.5K lbs | 6 |
| 215 | Kimberly-Clark Pennsylvania L Lc | Chester | Paper | 69.4K lbs | 7 |
| 216 | Whemco-Steel Castings Inc | Midland | Primary Metals | 69.3K lbs | 5 |
| 217 | Adhesives Research Inc | Glen Rock | Paper | 68.6K lbs | 4 |
| 218 | Lancaster Leaf Tobacco Co. of Pa Inc. | Lancaster | Tobacco | 68.3K lbs | 1 |
| 219 | Blommer Chocolate Co/e Greenville Plt | East Greenville | Food | 67.2K lbs | 1 |
| 220 | Precision Kidd Steel Co | West Aliquippa | Primary Metals | 66.8K lbs | 6 |
| 221 | Klein Plating Works Inc | Erie | Fabricated Metals | 66.7K lbs | 5 |
| 222 | Channellock Inc | Meadville | Fabricated Metals | 66.5K lbs | 2 |
| 223 | Creative Pultrusions Inc | Alum Bank | Plastics and Rubber | 65.1K lbs | 4 |
| 224 | Croda Inc | Mill Hall | Chemicals | 64.9K lbs | 10 |
| 225 | Beaver Valley Alloy Foundry Co | Monaca | Primary Metals | 63.5K lbs | 3 |
| 226 | Bonney Forge Corp | Mount Union | Fabricated Metals | 62.1K lbs | 4 |
| 227 | Crown Food Packaging | Hanover | Fabricated Metals | 61.1K lbs | 4 |
| 228 | Cambria Cogen Co | Ebensburg | Electric Utilities | 60.9K lbs | 2 |
| 229 | Kalas Manufacturing Inc Lancaster Plant | Lancaster | Fabricated Metals | 60.3K lbs | 4 |
| 230 | Cargill Meat Solutions Corp | Wyalusing | Food | 59.8K lbs | 2 |
| 231 | Ascensus Specialties Callery LLC | Evans City | Chemicals | 59.5K lbs | 7 |
| 232 | Tapco Tube Co/meadville | Meadville | Primary Metals | 59.4K lbs | 4 |
| 233 | Pressure Chemical Co | Pittsburgh | Chemicals | 58.0K lbs | 10 |
| 234 | Arxada LLC | Williamsport | Chemicals | 57.6K lbs | 9 |
| 235 | Wenger Feeds Llc-Shippensburg (f/k/a Wenger's Feed Mill In | Shippensburg | Food | 57.5K lbs | 4 |
| 236 | Greif Inc | Warminster | Fabricated Metals | 57.3K lbs | 3 |
| 237 | Skf USA Inc Hanover Plant | Hanover | Fabricated Metals | 55.8K lbs | 7 |
| 238 | Basf Corp | Monaca | Chemicals | 55.5K lbs | 14 |
| 239 | Buck Co Inc | Quarryville | Primary Metals | 55.5K lbs | 5 |
| 240 | Piezo Kinetics Inc | Bellefonte | Computers and Electronic Products | 55.3K lbs | 2 |
| 241 | Swagelok Processing Co | Koppel | Primary Metals | 55.1K lbs | 6 |
| 242 | Wenger Feeds Llc-Hempfield (f/k/a Wenger Feed Mill Inc) | Lancaster | Food | 53.8K lbs | 4 |
| 243 | Kopp Glass Inc | Pittsburgh | Nonmetallic Mineral Product | 53.4K lbs | 3 |
| 244 | Dupont Towanda Plant | Towanda | Chemicals | 52.8K lbs | 7 |
| 245 | Standard Steel LLC | Burnham | Primary Metals | 52.2K lbs | 11 |
| 246 | Heartland Fabrication LLC | Brownsville | Transportation Equipment | 52.0K lbs | 2 |
| 247 | Dura-Bond Steel Corp | Export | Fabricated Metals | 51.9K lbs | 2 |
| 248 | Ppg Industries Inc | Monroeville | Chemicals | 50.2K lbs | 2 |
| 249 | Ineos Composites Philadelphia Plant | Philadelphia | Chemicals | 49.7K lbs | 11 |
| 250 | Georgia Pacific Panel Products Llc/mount Jewett Mdf | Mount Jewett | Wood Products | 49.6K lbs | 3 |
| 251 | Ritchey Metals Co Inc | Canonsburg | Primary Metals | 49.5K lbs | 4 |
| 252 | Silgan White Cap Corp | Hazleton | Fabricated Metals | 48.7K lbs | 6 |
| 253 | Mauser USA LLC Warren Facility | Warren | Fabricated Metals | 48.0K lbs | 1 |
| 254 | High Steel Structures - Williamsport Facility | Williamsport | Fabricated Metals | 47.4K lbs | 7 |
| 255 | Stella-Jones Corp | Dubois | Wood Products | 46.6K lbs | 4 |
| 256 | Jeraco Enterprises Inc/milton Plt | Milton | Transportation Equipment | 46.4K lbs | 1 |
| 257 | Can Corp of America Inc | Blandon | Fabricated Metals | 45.3K lbs | 9 |
| 258 | Corry Forge Co. | Corry | Fabricated Metals | 45.2K lbs | 5 |
| 259 | Buzzi Unicem Stockertown Plant | Stockertown | Nonmetallic Mineral Product | 43.9K lbs | 10 |
| 260 | Toppan Interamerica Inc | Morgantown | Printing | 43.8K lbs | 2 |
| 261 | American Nickeloid Co | Walnutport | Fabricated Metals | 43.5K lbs | 6 |
| 262 | Taylor Industries Inc. | Parker Ford | Plastics and Rubber | 43.4K lbs | 1 |
| 263 | Interstate Chemical Co Inc | Hermitage | Chemical Wholesalers | 43.0K lbs | 18 |
| 264 | Gentex Corp | Simpson | Transportation Equipment | 42.9K lbs | 3 |
| 265 | Exide Technologies Reading Smelter Div | Reading | Primary Metals | 42.8K lbs | 1 |
| 266 | Metem - a Ge Vernova Business | Allentown | Fabricated Metals | 42.6K lbs | 5 |
| 267 | Mersen USA Gs Corp. - St Marys | Saint Marys | Electrical Equipment | 42.2K lbs | 6 |
| 268 | Wenger Feeds Llc-Rheems (f/k/a Wenger Feed Mill Inc) | Elizabethtown | Food | 42.1K lbs | 6 |
| 269 | Jlg Industries Inc 1 Jlg Drive Facility | Mc Connellsburg | Machinery | 41.5K lbs | 5 |
| 270 | Hunlock Creek Generating LLC Hunlock Creek Energy Center | Hunlock Creek | Electric Utilities | 41.2K lbs | 1 |
| 271 | Prysmian Cables & Systems USA LLC | Williamsport | Electrical Equipment | 41.1K lbs | 3 |
| 272 | Sasol Chemicals (usa) LLC Oil City Plant | Oil City | Chemicals | 40.7K lbs | 1 |
| 273 | Ati Flat Rolled Products Llc-Latrobe Plant | Latrobe | Primary Metals | 40.5K lbs | 5 |
| 274 | Ball Metal Beverage Container Corp | Pittston | Fabricated Metals | 39.9K lbs | 5 |
| 275 | Sharretts Plating Co Inc | Emigsville | Fabricated Metals | 39.7K lbs | 3 |
| 276 | Duraloy Technologies Inc | Scottdale | Primary Metals | 39.1K lbs | 3 |
| 277 | Pulflex Technologies LLC | Ford City | Plastics and Rubber | 39.0K lbs | 1 |
| 278 | Borchers Americas Inc. | Franklin | Chemicals | 38.0K lbs | 11 |
| 279 | Dairy Farmers of America Inc. | Reading | Food | 37.9K lbs | 2 |
| 280 | Bae Systems Land & Armaments | York | Transportation Equipment | 37.5K lbs | 1 |
| 281 | Turkey Hill Dairy | Conestoga | Food | 37.1K lbs | 2 |
| 282 | Countertek | Ephrata | Furniture | 36.9K lbs | 1 |
| 283 | Zippo Manufacturing Co | Bradford | Fabricated Metals | 36.4K lbs | 3 |
| 284 | Hoeganaes Corp | Watsontown | Primary Metals | 36.1K lbs | 6 |
| 285 | Harley-Davidson Motor Co Operations Inc | York | Transportation Equipment | 35.7K lbs | 11 |
| 286 | Palmer International Inc. | Skippack | Chemicals | 35.6K lbs | 2 |
| 287 | Wenger Feeds Llc-Mount Joy (f/k/a Wenger's Feed Mill Inc) | Mount Joy | Food | 35.3K lbs | 5 |
| 288 | Arcos Industries LLC | Mount Carmel | Machinery | 34.9K lbs | 6 |
| 289 | Beaver Falls Tubular Products LLC | Beaver Falls | Primary Metals | 34.6K lbs | 2 |
| 290 | Intermetro Industries Corp | Wilkes-barre | Fabricated Metals | 34.2K lbs | 7 |
| 291 | Custom Processing Services Inc | Reading | Chemicals | 33.7K lbs | 5 |
| 292 | Agc Chemicals Americas Inc | Downingtown | Chemicals | 33.3K lbs | 1 |
| 293 | Papetti's Hygrade Egg Products Inc | Klingerstown | Food | 32.8K lbs | 2 |
| 294 | Parker Hannifin (aka Clark Filter) | Lancaster | Machinery | 32.8K lbs | 3 |
| 295 | Multi-Chem Group Washington Pa Facility | Washington | Chemical Wholesalers | 32.5K lbs | 4 |
| 296 | West Penn Wire/cdt - Wa | Washington | Electrical Equipment | 31.0K lbs | 3 |
| 297 | Fairchild Semiconductor | Mountain Top | Computers and Electronic Products | 30.9K lbs | 4 |
| 298 | Tri-City Marble LLC | Allentown | Plastics and Rubber | 30.9K lbs | 1 |
| 299 | National Magnetics Group Inc | Bethlehem | Nonmetallic Mineral Product | 30.8K lbs | 3 |
| 300 | Sharon Coating LLC | Sharon | Fabricated Metals | 30.5K lbs | 11 |
| 301 | Metallurgical Products Co | West Chester | Primary Metals | 30.4K lbs | 4 |
| 302 | Infinity Ltl | Morrisville | Chemicals | 30.3K lbs | 4 |
| 303 | Waupaca Foundry Inc - Lawrenceville | Lawrenceville | Primary Metals | 30.2K lbs | 4 |
| 304 | Penn Color Inc. | Hatfield | Chemicals | 30.2K lbs | 17 |
| 305 | Skyline Steel Llc-Fairless Hills | Fairless Hills | Primary Metals | 29.6K lbs | 3 |
| 306 | Cleveland-Cliffs Plate LLC Conshohocken Facility | Conshohocken | Primary Metals | 29.0K lbs | 4 |
| 307 | Latrobe Specialty Metals | Latrobe | Primary Metals | 29.0K lbs | 11 |
| 308 | Ccl Container Aerosol Div | Hermitage | Fabricated Metals | 28.6K lbs | 6 |
| 309 | Quad/graphics Marketing LLC | Chalfont | Printing | 28.3K lbs | 1 |
| 310 | Modern Industries Kersey Div | Kersey | Fabricated Metals | 28.1K lbs | 1 |
| 311 | Lsc Communications / Lancaster West | Lancaster | Printing | 28.1K lbs | 2 |
| 312 | Cornell Cookson | Mountain Top | Fabricated Metals | 27.5K lbs | 8 |
| 313 | Speer Carbon Co LLC | Saint Marys | Electrical Equipment | 27.5K lbs | 3 |
| 314 | Multi-Color Corp | Tyrone | Printing | 27.4K lbs | 1 |
| 315 | Trs Ceramics Inc. DBA Trs Technologies | State College | Transportation Equipment | 27.2K lbs | 2 |
| 316 | Greenville Metals Inc | Transfer | Primary Metals | 27.2K lbs | 7 |
| 317 | Bedford Reinforced Plastics Inc | Bedford | Plastics and Rubber | 26.8K lbs | 2 |
| 318 | Interstate Chemical Co United Erie | Erie | Chemical Wholesalers | 26.8K lbs | 6 |
| 319 | Edon Composites | Horsham | Plastics and Rubber | 26.8K lbs | 1 |
| 320 | Du-Co Ceramics Co | Saxonburg | Nonmetallic Mineral Product | 26.8K lbs | 1 |
| 321 | Wwf Operating Co LLC | Dubois | Food | 26.7K lbs | 2 |
| 322 | Hanover Foods Corp | Centre Hall | Food | 26.6K lbs | 1 |
| 323 | Multi-Plastics Extrusions Inc. | Hazleton | Plastics and Rubber | 25.7K lbs | 2 |
| 324 | Stella - Jones Corp | Mc Alisterville | Wood Products | 25.6K lbs | 3 |
| 325 | Coating & Converting Technologies Corp. | Philadelphia | Paper | 25.4K lbs | 2 |
| 326 | North American Hoganas High Alloys LLC | Johnstown | Primary Metals | 25.1K lbs | 6 |
| 327 | Kawneer Co Inc | Bloomsburg | Primary Metals | 25.0K lbs | 7 |
| 328 | Pleiger Plastics Co | Washington | Plastics and Rubber | 24.6K lbs | 1 |
| 329 | Amg Titanium LLC | New Castle | Primary Metals | 24.6K lbs | 4 |
| 330 | Tempur Production USA LLC DBA Mountain Top Foam | Mountain Top | Plastics and Rubber | 24.2K lbs | 2 |
| 331 | Univar Solutions USA - Morrisville Branch | Morrisville | Chemical Wholesalers | 24.2K lbs | 15 |
| 332 | Sms Group Inc | Oil City | Machinery | 23.8K lbs | 3 |
| 333 | Donsco Inc | Wrightsville | Primary Metals | 23.6K lbs | 3 |
| 334 | Tech Tube | King Of Prussia | Primary Metals | 23.1K lbs | 3 |
| 335 | Univar Solutions USA - 4 Steel Road Morrisville Pa | Morrisville | Chemical Wholesalers | 23.0K lbs | 10 |
| 336 | Behr Process LLC - Allentown | Allentown | Chemicals | 23.0K lbs | 6 |
| 337 | Kme Corp | Nesquehoning | Transportation Equipment | 22.9K lbs | 4 |
| 338 | Ati Specialty Materials LLC - Oakdale | Oakdale | Fabricated Metals | 22.7K lbs | 3 |
| 339 | Evonik Corp | Chester | Nonmetallic Mineral Product | 22.5K lbs | 2 |
| 340 | Specialty Ring Products Inc | Bensalem | Transportation Equipment | 22.4K lbs | 2 |
| 341 | Purolite LLC | Philadelphia | Chemicals | 22.2K lbs | 1 |
| 342 | Etc Northeast Pipeline/galaxy Comp Sta | Parker | Natural Gas Processing | 22.1K lbs | 5 |
| 343 | Electric Materials Co | North East | Primary Metals | 22.1K lbs | 1 |
| 344 | U.S. Department of the Treasury U.S. Mint at Philadelphia | Philadelphia | Fabricated Metals | 22.0K lbs | 5 |
| 345 | Proform Powder Metals | Punxsutawney | Fabricated Metals | 21.6K lbs | 3 |
| 346 | Delaware Valley Custom Marble Inc | West Grove | Plastics and Rubber | 21.6K lbs | 1 |
| 347 | Snap-Tite Hose/ Union City | Union City | Plastics and Rubber | 21.5K lbs | 2 |
| 348 | Spectrum Controlinc | State College | Computers and Electronic Products | 21.3K lbs | 1 |
| 349 | Boyertown Foundry Co | New Berlinville | Primary Metals | 21.1K lbs | 4 |
| 350 | Wenger Feeds Llc-Spring Glen (f/k/a Wenger Feed Mill Inc) | Spring Glen | Food | 21.1K lbs | 5 |
| 351 | Wenger Feeds Llc-Muncy (f/k/a Wenger Feed Mill Inc) | Muncy | Food | 21.0K lbs | 5 |
| 352 | Ssab Wear Solutions Astralloy | Sharon | Fabricated Metals | 20.7K lbs | 4 |
| 353 | C-K Composites Co. LLC | Mount Pleasant | Plastics and Rubber | 20.5K lbs | 1 |
| 354 | Highspire Terminals - de Llc/highspire Terminal | Middletown | Petroleum Bulk Terminals | 20.2K lbs | 12 |
| 355 | Lake Erie Biofuels | Erie | Chemicals | 20.0K lbs | 1 |
| 356 | Valmont Pittsburgh Galvanizing | Midland | Fabricated Metals | 19.8K lbs | 1 |
| 357 | Colorcon | West Point | Chemicals | 19.7K lbs | 3 |
| 358 | Sherwin-Williams Co | Pittsburgh | Chemicals | 19.3K lbs | 12 |
| 359 | Lanxess Corp Neville Island | Pittsburgh | Chemicals | 19.2K lbs | 9 |
| 360 | Amg Titanium LLC | New Castle | Primary Metals | 19.2K lbs | 10 |
| 361 | Pennengineering | Danboro | Fabricated Metals | 19.2K lbs | 4 |
| 362 | Ocean Spray Cranberries Inc/lehigh Valley | Breinigsville | Food | 19.1K lbs | 1 |
| 363 | Brightsmith LLC | Morrisville | Fabricated Metals | 19.0K lbs | 7 |
| 364 | Gichner Systems Group Inc | Dallastown | Fabricated Metals | 18.9K lbs | 1 |
| 365 | Bluestone Gas Plant | Evans City | Natural Gas Processing | 18.9K lbs | 5 |
| 366 | Altoona Terminals - de Llc/altoona Terminal | Altoona | Petroleum Bulk Terminals | 18.8K lbs | 11 |
| 367 | Bulk Chemicals Inc | Shoemakersville | Chemicals | 18.8K lbs | 5 |
| 368 | Clemens Food Group (hatfield Facility) | Hatfield | Food | 18.6K lbs | 3 |
| 369 | Quaker City Chemicals | Philadelphia | Chemicals | 18.5K lbs | 13 |
| 370 | Precision Tube Co LLC | North Wales | Primary Metals | 18.4K lbs | 2 |
| 371 | Etc Northeast Fld Svc Llc/pike Comp Sta | Rochester | Natural Gas Processing | 18.0K lbs | 7 |
| 372 | Pepperidge Farm | Downingtown | Food | 17.9K lbs | 1 |
| 373 | Akdeniz Chemson Additives Inc | Philadelphia | Chemicals | 17.8K lbs | 7 |
| 374 | Prime Metals Acquisitions LLC | Homer City | Primary Metals | 17.8K lbs | 6 |
| 375 | Dentsply Sirona | York | Miscellaneous Manufacturing | 17.8K lbs | 2 |
| 376 | Kawneer Co Inc. | Cranberry Township | Fabricated Metals | 17.7K lbs | 8 |
| 377 | Chemalloy Co LLC | Conshohocken | Primary Metals | 17.6K lbs | 6 |
| 378 | Hammond Lead Products | Pottstown | Chemicals | 17.5K lbs | 2 |
| 379 | Royal Chemical Co | East Stroudsburg | Chemicals | 17.5K lbs | 7 |
| 380 | Cera-Met | Bethlehem | Primary Metals | 17.3K lbs | 1 |
| 381 | Linde Gas & Equipment Inc. | Morrisville | Chemical Wholesalers | 16.8K lbs | 2 |
| 382 | Inolex Chemical Co | Philadelphia | Chemicals | 16.7K lbs | 2 |
| 383 | Veka Inc | Fombell | Plastics and Rubber | 16.6K lbs | 9 |
| 384 | Metaldyne Sintered Components Ridgway | Ridgway | Fabricated Metals | 16.0K lbs | 4 |
| 385 | Gelest | Morrisville | Chemicals | 15.8K lbs | 2 |
| 386 | Glen-Gery Corp Mid Atla Ntic Plant | Shoemakersville | Nonmetallic Mineral Product | 15.8K lbs | 2 |
| 387 | Langeloth Metallurgical Co | Langeloth | Primary Metals | 15.8K lbs | 13 |
| 388 | The Federal Metal Co | Columbia | Primary Metals | 15.3K lbs | 16 |
| 389 | Eagle Casting Llc. | Hanover | Primary Metals | 15.1K lbs | 4 |
| 390 | Schott N.a. Inc | Duryea | Nonmetallic Mineral Product | 15.0K lbs | 1 |
| 391 | The Ames Cos Inc. | Camp Hill | Fabricated Metals | 14.5K lbs | 4 |
| 392 | Knoll Inc | East Greenville | Furniture | 14.1K lbs | 4 |
| 393 | Mercer Forge Corp | Mercer | Fabricated Metals | 14.0K lbs | 4 |
| 394 | Morgan Advanced Materials St Marys Site | Saint Marys | Electrical Equipment | 13.8K lbs | 3 |
| 395 | Supelco | Bellefonte | Computers and Electronic Products | 13.7K lbs | 2 |
| 396 | Miller Centrifugal Casting Co | Mc Donald | Primary Metals | 13.7K lbs | 4 |
| 397 | Plain & Fancy Kitchens | Schaefferstown | Furniture | 13.6K lbs | 2 |
| 398 | Amazon.com Services LLC | Norristown | Printing | 13.6K lbs | 2 |
| 399 | Pecora Corp | Harleysville | Chemicals | 13.4K lbs | 3 |
| 400 | Univar Solutions USA - Bunola Branch | Bunola | Chemical Wholesalers | 13.4K lbs | 9 |
| 401 | Concast Metal Products Co | Mars | Primary Metals | 13.3K lbs | 4 |
| 402 | Corry Rubber Corp | Corry | Plastics and Rubber | 13.3K lbs | 1 |
| 403 | Coraopolis Terminals - de Llc/coraopolis Terminal | Coraopolis | Petroleum Bulk Terminals | 13.2K lbs | 11 |
| 404 | Safety-Kleen Systems Johnstown (joh) | Johnstown | Hazardous Waste | 12.9K lbs | 4 |
| 405 | Dober Chemical Corp (hazle Township) | Hazleton | Chemicals | 12.6K lbs | 5 |
| 406 | Nalco Co | Ellwood City | Chemicals | 12.2K lbs | 14 |
| 407 | Gold Bond Building Products - Milton | New Columbia | Paper | 12.2K lbs | 2 |
| 408 | Misco Products Corp | Reading | Chemicals | 12.1K lbs | 4 |
| 409 | Dunmore International Corp | Bristol | Plastics and Rubber | 12.1K lbs | 3 |
| 410 | J Walter Miller Co | Lancaster | Primary Metals | 12.0K lbs | 2 |
| 411 | Menasha Pkg Llc/york | York | Printing | 11.9K lbs | 1 |
| 412 | Gelest Inc | Glen Rock | Chemicals | 11.8K lbs | 14 |
| 413 | Johnson Controls Inc-Waynesboro (frick) | Waynesboro | Machinery | 11.8K lbs | 1 |
| 414 | Amz Manufacturing Corp | York | Fabricated Metals | 11.8K lbs | 2 |
| 415 | Pvs Steel Services Inc | Allenport | Chemicals | 11.5K lbs | 2 |
| 416 | John Middleton Co Kop Site | King Of Prussia | Tobacco | 11.5K lbs | 1 |
| 417 | Sanofi Pasteur Inc | Swiftwater | Chemicals | 11.4K lbs | 3 |
| 418 | Lehigh Heavy Forge Corp | Bethlehem | Fabricated Metals | 11.4K lbs | 4 |
| 419 | Alpha Assembly Solutions | Altoona | Primary Metals | 11.2K lbs | 7 |
| 420 | Morgantown Technical Services Inc | Mount Morris | Other | 11.1K lbs | 1 |
| 421 | Amz Manufacturing | York | Fabricated Metals | 10.9K lbs | 1 |
| 422 | Championx-Hughesville | Hughesville | Chemical Wholesalers | 10.9K lbs | 8 |
| 423 | Johnson Matthey Inc | Smithfield | Transportation Equipment | 10.6K lbs | 4 |
| 424 | Houston Gas Plant | Washington | Natural Gas Processing | 10.5K lbs | 5 |
| 425 | Keystone Powdered Metal Co | Saint Marys | Fabricated Metals | 10.5K lbs | 5 |
| 426 | Brenntag Northeast LLC | Reading | Chemical Wholesalers | 10.3K lbs | 23 |
| 427 | Glaxosmithkline LLC | Collegeville | Chemicals | 10.3K lbs | 4 |
| 428 | Kunzler & Co Inc. | Lancaster | Food | 10.0K lbs | 1 |
| 429 | Brenntag Northeast - Snyder Road | Reading | Chemical Wholesalers | 10.0K lbs | 15 |
| 430 | Ashland Foundry & Machine Works | Ashland | Primary Metals | 9.5K lbs | 4 |
| 431 | Carpenter Co | Fogelsville | Plastics and Rubber | 9.5K lbs | 2 |
| 432 | Union Electric Steel Corp | Carnegie | Machinery | 9.4K lbs | 3 |
| 433 | Republic Environmental Systems Pennsylvania LLC | Hatfield | Hazardous Waste | 9.4K lbs | 2 |
| 434 | Aurorium Dwg LLC | Delaware Water Gap | Chemicals | 9.2K lbs | 3 |
| 435 | Erie Strayer | Erie | Machinery | 9.2K lbs | 2 |
| 436 | National Electrical Carbon Products Inc | East Stroudsburg | Electrical Equipment | 9.1K lbs | 4 |
| 437 | Kore Mart Ltd | Hamburg | Chemicals | 8.8K lbs | 2 |
| 438 | Better Baked Foods Inc | North East | Food | 8.8K lbs | 1 |
| 439 | Ampal | Palmerton | Primary Metals | 8.7K lbs | 4 |
| 440 | Polytek Development Corp | Easton | Chemicals | 8.6K lbs | 5 |
| 441 | I2M Inc. | Mountain Top | Plastics and Rubber | 8.6K lbs | 5 |
| 442 | Koppers Inc (susquehanna) | Montgomery | Wood Products | 8.6K lbs | 3 |
| 443 | Vitro Flat Glass LLC Carlisle Plant | Carlisle | Nonmetallic Mineral Product | 8.6K lbs | 3 |
| 444 | Philadelphia Naval Shipyard | Philadelphia | Other | 8.4K lbs | 3 |
| 445 | Cleveland Steel Container Corp | Quakertown | Fabricated Metals | 8.4K lbs | 2 |
| 446 | Signature Custom Cabinetry | Ephrata | Furniture | 8.4K lbs | 2 |
| 447 | Sunoco Llc-Race Fuels | Marcus Hook | Petroleum | 8.4K lbs | 11 |
| 448 | US Penitentiary Canaan | Waymart | Other | 8.3K lbs | 1 |
| 449 | Vorteq Coil Finishers LLC | Allentown | Fabricated Metals | 8.3K lbs | 6 |
| 450 | Ahf Products Lancaster Facility | Lancaster | Plastics and Rubber | 8.2K lbs | 1 |
| 451 | Penn-Mar Castings LLC | Hanover | Primary Metals | 8.2K lbs | 1 |
| 452 | Prysmian Cables & Systems LLC | Schuylkill Haven | Electrical Equipment | 8.0K lbs | 6 |
| 453 | Lycoming Engines a Div of Avco Corp | Williamsport | Transportation Equipment | 7.9K lbs | 13 |
| 454 | Trenwyth Industries | Emigsville | Nonmetallic Mineral Product | 7.8K lbs | 2 |
| 455 | Saint Gobain Abrasives Inc | Montgomeryville | Nonmetallic Mineral Product | 7.7K lbs | 2 |
| 456 | Sherwin-Williams Co | Lebanon | Chemicals | 7.7K lbs | 8 |
| 457 | Goodhart Sons Inc. | Lancaster | Fabricated Metals | 7.7K lbs | 2 |
| 458 | Curtiss Wright Electro Mech Corp | Cheswick | Machinery | 7.7K lbs | 3 |
| 459 | Ellwood Remelt Steel | New Castle | Primary Metals | 7.6K lbs | 3 |
| 460 | Mplx Terminals LLC - Midland Pa Terminal | Industry | Petroleum Bulk Terminals | 7.4K lbs | 11 |
| 461 | Chestnut Ridge Foam Inc | Latrobe | Plastics and Rubber | 7.4K lbs | 5 |
| 462 | Iwm - Wire Facility | York | Primary Metals | 7.3K lbs | 2 |
| 463 | York Casket Co | York | Miscellaneous Manufacturing | 7.2K lbs | 1 |
| 464 | World Energy Harrisburg LLC | Camp Hill | Food | 7.2K lbs | 1 |
| 465 | Airgas Specialty Products-Palmerton Pa | Palmerton | Chemical Wholesalers | 7.0K lbs | 1 |
| 466 | Wsp Solvay Group | Castanea | Chemicals | 6.9K lbs | 5 |
| 467 | Met-Pro Technologies DBA Fybroc Unit | Telford | Machinery | 6.9K lbs | 1 |
| 468 | Penn Union Co. LLC | Edinboro | Electrical Equipment | 6.8K lbs | 2 |
| 469 | Mack Trucks Inc. | Macungie | Transportation Equipment | 6.8K lbs | 2 |
| 470 | High Concrete Group LLC - Denver Facility | Denver | Nonmetallic Mineral Product | 6.8K lbs | 5 |
| 471 | Ati Precision Finishing LLC - Monaca | Monaca | Fabricated Metals | 6.7K lbs | 3 |
| 472 | Watsontown Brick Co | Watsontown | Nonmetallic Mineral Product | 6.7K lbs | 4 |
| 473 | Airgas Specialty Products - Donora Pa | Donora | Chemical Wholesalers | 6.6K lbs | 1 |
| 474 | Tanner Industries Inc | Philadelphia | Chemical Wholesalers | 6.6K lbs | 1 |
| 475 | Esschem Inc. | Linwood | Chemicals | 6.5K lbs | 2 |
| 476 | Donsco Inc | Mount Joy | Primary Metals | 6.5K lbs | 4 |
| 477 | Allegheny Petroleum Products Co | Wilmerding | Petroleum | 6.5K lbs | 6 |
| 478 | Jsp Intl Mfg | Butler | Plastics and Rubber | 6.3K lbs | 1 |
| 479 | All-Clad Metalcrafters LLC | Canonsburg | Fabricated Metals | 6.3K lbs | 5 |
| 480 | B. Braun US Device Manufacturing LLC | Allentown | Miscellaneous Manufacturing | 6.0K lbs | 2 |
| 481 | Western International Gas & Cylinders Inc. | Berwick | Chemical Wholesalers | 5.8K lbs | 1 |
| 482 | Silberline Manufacturing Co Inc | Tamaqua | Primary Metals | 5.8K lbs | 1 |
| 483 | Penn Fishing Tackle Manufacturing Co | Philadelphia | Miscellaneous Manufacturing | 5.7K lbs | 1 |
| 484 | Calumet Karns City Refining LLC | Karns City | Petroleum | 5.7K lbs | 3 |
| 485 | Tms International Llc/new Castle Plt | New Castle | Hazardous Waste | 5.6K lbs | 10 |
| 486 | Harmon Creek Gas Plant | Bulger | Natural Gas Processing | 5.6K lbs | 3 |
| 487 | Custom Laminating Corp | Mount Bethel | Fabricated Metals | 5.6K lbs | 2 |
| 488 | Harsco Minerals of Pa LLC | Sarver | Miscellaneous Manufacturing | 5.6K lbs | 12 |
| 489 | Reading Alloys LLC | Robesonia | Primary Metals | 5.5K lbs | 8 |
| 490 | Ellwood Crankshaft Group Sharon Forge | Sharon | Fabricated Metals | 5.5K lbs | 4 |
| 491 | St. Marys Carbon Co Inc | Saint Marys | Electrical Equipment | 5.4K lbs | 2 |
| 492 | Te Connectivity | Jonestown | Computers and Electronic Products | 5.4K lbs | 2 |
| 493 | Hoeganaes Corp | Ridgway | Fabricated Metals | 5.4K lbs | 3 |
| 494 | Farmers Pride Inc - Plant 3 | Fredericksburg | Food | 5.3K lbs | 1 |
| 495 | Glen-Gery Corp | York | Nonmetallic Mineral Product | 5.3K lbs | 3 |
| 496 | Oldcastle Infrastructure | Telford | Nonmetallic Mineral Product | 5.3K lbs | 2 |
| 497 | Watson Standard Co (neville Island Plant) | Pittsburgh | Chemicals | 5.2K lbs | 3 |
| 498 | New Jersey Shell Casting Corp | Marietta | Primary Metals | 5.2K lbs | 3 |
| 499 | Aaadcg Inc. Rockwood Div | Rockwood | Fabricated Metals | 5.2K lbs | 4 |
| 500 | Canpack US | Olyphant | Fabricated Metals | 5.2K lbs | 7 |