| HMHeidelberg Materials Penns Park HMA | Newtown | PA | Petroleum and Coal Products Manufacturing324121 | 1-19 | ◐ LIKELY ACTIVE |
| HMHeidelberg Materials Perkiomenville HMA | Perkiomenville | PA | Petroleum and Coal Products Manufacturing324121 | 1-19 | ◐ LIKELY ACTIVE |
| HMHeidelberg Materials St Thomas | Saint Thomas | PA | Petroleum and Coal Products Manufacturing324121 | 1-19 | ◐ LIKELY ACTIVE |
| HMHeidelberg Materials St Thomas | St Thomas | PA | Petroleum and Coal Products Manufacturing324121 | 1-19 | ◐ LIKELY ACTIVE |
| HMHeidelberg Materials Wrightsville HMA | Wrightsville | PA | Petroleum and Coal Products Manufacturing324121 | 1-19 | ◐ LIKELY ACTIVE |
| HHHinkletown HMA Plant | Ephrata | PA | Petroleum and Coal Products Manufacturing324121 | 1-19 | ◐ LIKELY ACTIVE |
| HEHmf Express Phl | Philadelphia | PA | Fabricated Metal Product Manufacturing332321 | 1-19 | ◐ LIKELY ACTIVE |
| HRHoeganaes - Ridgway | Ridgway | PA | Primary Metal Manufacturing331221 | 1-19 | ◐ LIKELY ACTIVE |
| HOHomer Optical | York | PA | Miscellaneous Manufacturing339115 | 1-19 | ◐ LIKELY ACTIVE |
| HFHormann Flexon LLC - Imperial | Imperial | PA | Fabricated Metal Product Manufacturing332322 | 1-19 | ◐ LIKELY ACTIVE |
| HUHormann USA LLC - Allentown | Allentown | PA | Fabricated Metal Product Manufacturing332322 | 1-19 | ◐ LIKELY ACTIVE |
| IPIngredients PLUS: Landisville, NY | Landisville | PA | Food Manufacturing311999 | 1-19 | ◐ LIKELY ACTIVE |
| IPInternational Paper Biglerville Distribution Warehouse | Biglerville | PA | Paper Manufacturing322211 | 1-19 | ◐ LIKELY ACTIVE |
| IPInternational Paper Kennett Square Warehouse | Kennett Square | PA | Paper Manufacturing322211 | 1-19 | ◐ LIKELY ACTIVE |
| IDItoh Denki USA Inc,Waynesboro | Waynesboro | PA | Machinery Manufacturing333922 | 1-19 | ◐ LIKELY ACTIVE |
| JMJamestown Macadam, Inc.- Warren Concrete | Warren | PA | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| JAJ A & W A Hess Inc. | Hazle Township | PA | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| JBJdn Block INC Dba Nyce Crete Company | Lansdale | PA | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| JKJJ Kennedy - Kittanning | Kittanning | PA | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| JJJLG - JerrDan Molly Pitcher | Greencastle | PA | Machinery Manufacturing333923 | 1-19 | ◐ LIKELY ACTIVE |
| JLJohn Lar- Downingtown | Downingtown | PA | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| JBJohnstown Branch 39 | Johnstown | PA | Chemical Manufacturing325120 | 1-19 | ◐ LIKELY ACTIVE |
| JSJustrite Safety Group | Titusville | PA | Plastics and Rubber Products Manufacturing326199 | 1-19 | ◐ LIKELY ACTIVE |
| KJKamps Jessup Amazon | Jessup | PA | Wood Product Manufacturing321920 | 1-19 | ◐ LIKELY ACTIVE |
| KPKamps Pallets - Mifflintown | Mifflintown | PA | Wood Product Manufacturing321920 | 1-19 | ◐ LIKELY ACTIVE |
| KPKamps Pittston | Pittston | PA | Wood Product Manufacturing321920 | 1-19 | ◐ LIKELY ACTIVE |
| KAKeystone Automatic Technologies Inc | Emporium | PA | Fabricated Metal Product Manufacturing332618 | 1-19 | ◐ LIKELY ACTIVE |
| LHLaflin HMA Plant | Laflin | PA | Petroleum and Coal Products Manufacturing324121 | 1-19 | ◐ LIKELY ACTIVE |
| LBLancaster Branch 31 | Lancaster | PA | Chemical Manufacturing325120 | 1-19 | ◐ LIKELY ACTIVE |
| LILATICRETE International Inc - Pottstown | Pottstown | PA | Chemical Manufacturing325520 | 1-19 | ◐ LIKELY ACTIVE |
| LMLatrobe Machine Co | Latrobe | PA | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| LRLeesport RMC Plant | Leesport | PA | Petroleum and Coal Products Manufacturing324121 | 1-19 | ◐ LIKELY ACTIVE |
| LELehigh Electric Products Company | Allentown | PA | Electrical Equipment, Appliance & Component Manufacturing335313 | 1-19 | ◐ LIKELY ACTIVE |
| LCLens Concrete Services | Jonestown | PA | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| LLetterkenny | Chambersburg | PA | Nonmetallic Mineral Product Manufacturing327390 | 1-19 | ◐ LIKELY ACTIVE |
| LHLewisburg HMA Plant | Lewisburg | PA | Petroleum and Coal Products Manufacturing324121 | 1-19 | ◐ LIKELY ACTIVE |
| LPLewisburg Plant | Lewisburg | PA | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| LALignetics Allegheny | Youngsville | PA | Wood Product Manufacturing321999 | 1-19 | ◐ LIKELY ACTIVE |
| LBLignetics Biomaxx | Ulysses | PA | Wood Product Manufacturing321999 | 1-19 | ◐ LIKELY ACTIVE |
| LLimerick | Pottstown | PA | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| LCLincoln Contracting and Equipment Company, Inc. - GCR | Stoystown | PA | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
| LLLong Lane, PA | Lancaster | PA | Nonmetallic Mineral Product Manufacturing327991 | 1-19 | ◐ LIKELY ACTIVE |
| MManchester | Manchester | PA | Electrical Equipment, Appliance & Component Manufacturing335931 | 1-19 | ◐ LIKELY ACTIVE |
| MPMann+Hummel PPA | Allentown | PA | Machinery Manufacturing333413 | 1-19 | ◐ LIKELY ACTIVE |
| MMMasons Mark Youngwood, PA | Youngwood | PA | Nonmetallic Mineral Product Manufacturing327390 | 1-19 | ◐ LIKELY ACTIVE |
| M7MayekawaUSA 7 | York | PA | Machinery Manufacturing333912 | 1-19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Pittsburgh, PA) | Cranberry Twp | PA | Fabricated Metal Product Manufacturing332618 | 1-19 | ◐ LIKELY ACTIVE |
| MCMcClarin Composites - FRP | Hanover | PA | Plastics and Rubber Products Manufacturing326199 | 1-19 | ◐ LIKELY ACTIVE |
| MMcConnell | Stroudsburg | PA | Chemical Manufacturing325411 | 1-19 | ◐ LIKELY ACTIVE |
| MFMcGill Fairless Hills, LLC | Morrisville | PA | Chemical Manufacturing325315 | 1-19 | ◐ LIKELY ACTIVE |