 Gbc Advanced Materials LLC | Latrobe | 20–99 | ● ACTIVE |
 Rfsj, INC | Mount Pleasnt | — | ● ACTIVE |
| ATArconic Tech LLC - Arconic Tech Center | New Kensington | — | ◐ LIKELY ACTIVE |
| LSLigonier Stone & Lime Concrete | Latrobe | 1–19 | ◐ LIKELY ACTIVE |
| DCDaniels Concrete Batch Plt | Greensburg | — | ◐ LIKELY ACTIVE |
| BIBurrell Industries INC. | New Kensington | — | ◇ UNVERIFIED |
| CIChromaglass INC | Export | — | ◇ UNVERIFIED |
| DCDonegal Crystal USA INC | Jeannette | — | ◇ UNVERIFIED |
| DIDre Iii Lp/jeannette | Jeannette | — | ◇ UNVERIFIED |
| GBGlass Beads CO | Latrobe | — | ◇ UNVERIFIED |
| JSJeannette Specialty Glass | Jeannette | — | ◇ UNVERIFIED |
| JSJeannette Specialty /jeannette Shade & Novelty | Jeannette | — | ◇ UNVERIFIED |
| PIPpg Ind Greensburg Div | Greensburg | — | ◇ UNVERIFIED |
| QPQuikrete - Pittsburgh, Pa Plant | Latrobe | — | ◇ UNVERIFIED |
| SCSaint-gobain Ceramics/latrobe Plt | Latrobe | — | ◇ UNVERIFIED |
| GGreensburg | Greensburg | 20–99 | ◐ LIKELY ACTIVE |
| MMMasons Mark Youngwood, PA | Youngwood | 1–19 | ◐ LIKELY ACTIVE |
| MPMt. Pleasant | Mount Pleasant | 1–19 | ◐ LIKELY ACTIVE |
| PQPIT Quikrete | Latrobe | 20–99 | ◐ LIKELY ACTIVE |
 A.c. Miller Concrete Products, INC. | Blairsville | — | ◇ UNVERIFIED |
| ATAmerican Tank & Concrete Service | Greensburg | — | ◇ UNVERIFIED |
| BWBlairsville Wilbert Vault Company | Mount Pleasant | — | ◇ UNVERIFIED |
| CCContract Crushing Const - Patton Site | Belle Vernon | — | ◇ UNVERIFIED |
| GTGolden Triangle Temp Concrete Batch Plt | Monessen | — | ◇ UNVERIFIED |
| IDIms Div - Tube City Ims | Belle Vernon | — | ◇ UNVERIFIED |
| JDJohn D Shaffer | Latrobe | — | ◇ UNVERIFIED |
| JSJones Stone & Marble, INC. | Greensburg | — | ◇ UNVERIFIED |
| PGPhillips Granite INC. | Greensburg | — | ◇ UNVERIFIED |
| RSR.w. Sidley, INC. | Youngwood | — | ◇ UNVERIFIED |
| SCSaint-gobain Ceramic Materials | Latrobe | — | ◇ UNVERIFIED |
| WGWestmoreland Glass Block | North Huntingdon | — | ◇ UNVERIFIED |
