 Bethlehem Pre-cast INC | Bethlehem | 20–99 | ● ACTIVE |
 National Magnetics Group, INC. | Bethlehem | 100–499 | ● ACTIVE |
 Kadco Ceramics, LLC | Easton | — | ● ACTIVE |
| BBetco-easton | Easton | 20–99 | ◐ LIKELY ACTIVE |
| HMHeidelberg Materials US Cement Llc/ Nazareth | Nazareth | — | ◐ LIKELY ACTIVE |
| HKH & K Group/ Stockertown | Stockertown | — | ◐ LIKELY ACTIVE |
| KCKeystone Cement CO | Bath | — | ◐ LIKELY ACTIVE |
| PPPolymer Products CO INC | Stockertown | 20–99 | ◐ LIKELY ACTIVE |
| CGCap Glass Allentown | Northampton | — | ◐ LIKELY ACTIVE |
| PPPa Perlite CORP | Bethlehem | — | ◐ LIKELY ACTIVE |
| OAOldcastle Apg Easton | Easton | — | ◐ LIKELY ACTIVE |
| SCSilbrico Corp/easton | Forks Township | — | ◐ LIKELY ACTIVE |
| ACAls Clnr Svc | Easton | — | ◇ UNVERIFIED |
| CGCap Glass Allentown Llc/northampton Plt | Northampton | — | ◇ UNVERIFIED |
| ECEssroc Cement CORP - Plant 3 | Nazareth | — | ◇ UNVERIFIED |
| FCFrank Casilio & Sons, INC | Bethlehem | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Easton | — | ◇ UNVERIFIED |
| TBTecho Bloc Corp/plainfield Twp | Pen Argyl | — | ◇ UNVERIFIED |
| VCVictaulic CO Amer/palmer Plt | Easton | — | ◇ UNVERIFIED |
| WDWaylite Div Ims/bethlehem | Bethlehem | — | ◇ UNVERIFIED |
| CCCardinal CT | Easton | 20–99 | ◐ LIKELY ACTIVE |
| ECEaston CT | Easton | 20–99 | ◐ LIKELY ACTIVE |
| HCHeartland Cement Sales CO | Bethlehem | — | ◐ LIKELY ACTIVE |
| PAPen Argyl Plant | Pen Argyl | 100–499 | ◐ LIKELY ACTIVE |
| BIBay Industries INC. | Easton | — | ◇ UNVERIFIED |
| BIBay Industries Inc., Dba Bay Insulation of Pennsylvania | Easton | — | ◇ UNVERIFIED |
| ECEssroc/nazareth Cement Plt 3 | Nazareth | — | ◇ UNVERIFIED |
| HMHeidelberg Materials US Cement Llc/nazareth | Nazareth | — | ◇ UNVERIFIED |
| HCHercules Cement CO Llc/stockertown | Stockertown | — | ◇ UNVERIFIED |
| KPKeystone Portland Cement/east Allen | Bath | — | ◇ UNVERIFIED |
| MIMfs Inc/mineral Wool Plt 1 | Bethlehem | — | ◇ UNVERIFIED |
| MAMolded Acoustical Products of Easton, INC. | Easton | — | ◇ UNVERIFIED |
| PDPenn Dixie Commercial Park | Nazareth | — | ◇ UNVERIFIED |
| PGPremier Granite & Marble, Inc. | Pen Argyl | — | ◇ UNVERIFIED |
| PGPremier Granite & Marble, Inc. | Pen Argyl | — | ◇ UNVERIFIED |
| RORohn Ornamental Concrete INC | Bethlehem | — | ◇ UNVERIFIED |
| SGSpecialized Grinding Systems Dba Slicing Tech | Bangor | — | ◇ UNVERIFIED |
| TITecho-bloc Incorporated | Pen Argyl | — | ◇ UNVERIFIED |
