| ZVZeiser Vault Company | Nescopeck | PA | Nonmetallic Mineral Product Manufacturing327390 | 1-19 | ◇ UNVERIFIED |
| 2M281 Midway Road | Bethel | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| 4C4D Countertops LLC | Bradford | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| ASAbc/warren/amplex Superabrasives | Olyphant | PA | Nonmetallic Mineral Product Manufacturing327910 | — | ◇ UNVERIFIED |
 A.c. Miller Concrete Products, INC. | Blairsville | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| AMAllegheny Mineral Corp/slippery Rock | Kittanning | PA | Nonmetallic Mineral Product Manufacturing327410 | — | ◇ UNVERIFIED |
| AGAll Granite and Marble Corporation | Stroudsburg | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| AIAlmatis Inc/neville Grinding Ctr | Leetsdale | PA | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| AHAmc Home Remodelers | Philadelphia | PA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| ATAmerican Tank & Concrete Service | Greensburg | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ASAppalachian Stone INC. | Lemoyne | PA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| ASAppleridge Stone International, INC. | Blairsville | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| APA P, Rhodes LLC | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327112 | — | ◇ UNVERIFIED |
| ACArrow Concrete Company | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ASAyers Supply, Inc. | Clarks Summit | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
 Baltimore Fabrication | Emigsville | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BIBay Industries INC. | Easton | PA | Nonmetallic Mineral Product Manufacturing327993 | — | ◇ UNVERIFIED |
| BIBay Industries Inc., Dba Bay Insulation of Pennsylvania | Easton | PA | Nonmetallic Mineral Product Manufacturing327993 | — | ◇ UNVERIFIED |
| BMBella Marble and Granite, INC | Warminster | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| BMBerta Marble Design LLC | Huntingdon Valley | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| BWBlairsville Wilbert Vault Company | Mount Pleasant | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| BMBpb Mfg Inc/ Harding | Pittston | PA | Nonmetallic Mineral Product Manufacturing327993 | — | ◇ UNVERIFIED |
| BMBravo Marble and Granite, INC. | Lancaster | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| BCBrentanos Concrete Connection, INC. | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CLCardinal Lg Company | Jessup | PA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| CBCarlini Brothers CO. | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CMCatawissa Monument, INC. | Catawissa | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CCCayuga Concrete Pipe | New Britain | PA | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| CCCellular Concrete Solutions LLC | Allentown | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| CSCeltic Stone Granite and Tile LLC | Allentown | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CCCentermoreland Concrete Products | Tunkhannock | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| CRCe Ready Mix/irwin Concrete | Irwin | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CLChattanooga Labeling Systems | Galeton | PA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| CSConcrete Safety Systems, LLC | Bethel | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| CSConcrete Step Units INC | Scranton | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| CCContract Crushing Const - Patton Site | Belle Vernon | PA | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| CACorning Asahi Video Prod Co/state College | State College | PA | Nonmetallic Mineral Product Manufacturing327212 | — | ◇ UNVERIFIED |
| CGCorporate Glass INC. | Erie | PA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| CBCovered Bridge Precast | Ephrata | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| CBCreamton Block, LLC | Lake Como | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CCunard | Morrisdale | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| DEDaniels Excav Yard and Concrete Batch Plant | Greensburg | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| DBDarlington Brick & Clay/darlington | Darlington | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| DHDectile Harkus Construction | Butler | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| DVDelaware Valley Concrete Company, INC. | Kennett Square | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| DVDelaware Valley Concrete Company, INC. | Conshohocken | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| DRDelta Ready Mix Concrete | Delta | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| DSDesavino & Sons, Incorporated | Olyphant | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| DSDiaz Stone and Pallet, INC. | Kingsley | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| DCDlubak CORP | Blairsville | PA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
