| AAAssociated Asphalt Martinsburg, LLC | Martinsburg | WV | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| CICargill Inc/animal Nutrition Mfg Roaring Spring | Martinsburg | PA | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| MUMaax U.s. CORP | Martinsburg | WV | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| VIVariform INC | Martinsburg | WV | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| WAWilliams Asphalt Supplier, LLC | Martinsburg | WV | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| CFCargill Feed and Nutrition Martinsburg | Martinsburg | PA | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| CPConcrete Pipe & Precast Llc-martinsburg Precast Plant | Martinsburg | WV | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| EAEmivest Aerospace CORP | Martinsburg | WV | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
| GRGibbs Rifle CO INC | Martinsburg | WV | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| IIIsco Industries LLC | Martinsburg | WV | Plastics and Rubber Products Manufacturing326122 | — | ◇ UNVERIFIED |
| MUMaax US Corporation | Martinsburg | WV | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| MAMfa Agri Service - Martinsburg | Martinsburg | MO | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| QPQg Printing Ii Corp., Martinsburg | Martinsburg | WV | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| RMReady Mix Concrete CO | Martinsburg | WV | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| RCRubbermaid Commercial Products LLC | Martinsburg | WV | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| WKWorld Kitchen INC Martinsburg Plant | Martinsburg | WV | Nonmetallic Mineral Product Manufacturing327212 | — | ◇ UNVERIFIED |
| APA&m Products Manufacturing Company | Martinsburg | WV | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| CSCmc Steel Us, Llc, Martinsburg | Martinsburg | WV | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| CPCode Plus Components, LLC | Martinsburg | WV | Wood Product Manufacturing321214 | — | ◇ UNVERIFIED |
| CSCountertop Solutions LLC | Martinsburg | WV | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| LCLawrence Crouse Workshop | Martinsburg | WV | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| MCMartinsburg Concrete Products | Martinsburg | WV | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MBMountaineer Brand, LLC | Martinsburg | WV | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| PCPotomac Construction Industries INC | Martinsburg | WV | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| SCSexton Can CO INC | Martinsburg | WV | Food Manufacturing311422 | — | ◇ UNVERIFIED |
| TMThe Martinsburg Concrete Products CO. | Martinsburg | WV | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
