| TFThe Fredericks Company, INC. | Huntingdon Valley | PA | Nonmetallic Mineral Product Manufacturing327215 | 20-99 | ◐ LIKELY ACTIVE |
| TITms International Llc/new Castle Plant | New Castle | PA | Nonmetallic Mineral Product Manufacturing327999 | — | ◐ LIKELY ACTIVE |
| TATYK America | Clairton | PA | Nonmetallic Mineral Product Manufacturing327120 | 20-99 | ◐ LIKELY ACTIVE |
| UEUnion Electric Steel CORP | Burgettstown | PA | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| WBWatsontown Brick Co/watsontown Plt | Watsontown | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◐ LIKELY ACTIVE |
| WRWorld Resources CO | Pottsville | PA | Nonmetallic Mineral Product Manufacturing327999 | — | ◐ LIKELY ACTIVE |
| APAds Pipe Dba Frederick Precast | Greencastle | PA | Nonmetallic Mineral Product Manufacturing327332 | — | ◐ LIKELY ACTIVE |
| AEArdex Engineered Cements | Aliquippa | PA | Nonmetallic Mineral Product Manufacturing327310 | 100-499 | ◐ LIKELY ACTIVE |
| BCBall Corporation | Pittston | PA | Nonmetallic Mineral Product Manufacturing327212 | — | ◐ LIKELY ACTIVE |
| CGCabinetworks Group Inc/thompsontown | Thompsontown | PA | Nonmetallic Mineral Product Manufacturing327993 | — | ◐ LIKELY ACTIVE |
| CICardinal Ig Company (mountain Top) | Mountain Top | PA | Nonmetallic Mineral Product Manufacturing327215 | — | ◐ LIKELY ACTIVE |
| CSCarl Strutz & Co-treatment Room | Mars | PA | Nonmetallic Mineral Product Manufacturing327211 | 20-99 | ◐ LIKELY ACTIVE |
| CCCayuga Concrete Pipe | Croydon | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◐ LIKELY ACTIVE |
| CIChromaglass INC | Export | PA | Nonmetallic Mineral Product Manufacturing327212 | 1-19 | ◐ LIKELY ACTIVE |
| DLDutchland LLC | Christiana | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◐ LIKELY ACTIVE |
| ECEastern Concrete Materials / Sharon Hill | Sharon Hill | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| EMEpic Metals Corp/rankin | Rankin | PA | Nonmetallic Mineral Product Manufacturing327993 | — | ◐ LIKELY ACTIVE |
| EIErsvin Inds. INC. Amasteel Div. | Butler, | PA | Nonmetallic Mineral Product Manufacturing327910 | — | ◐ LIKELY ACTIVE |
| GCGlen-gery CORP Mid Atlantic Plant | Shoemakersville | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◐ LIKELY ACTIVE |
| HMHarsco Metals - Butler | Butler | PA | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| JKJ.j. Kennedy, INC. | Fombell | PA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
Kopp Glass Inc/pgh | Swissvale | PA | Nonmetallic Mineral Product Manufacturing327212 | — | ◐ LIKELY ACTIVE |
| MAMorgan Am&t Coudersport Site | Coudersport | PA | Nonmetallic Mineral Product Manufacturing327213 | — | ◐ LIKELY ACTIVE |
| NGNational Gypsum - Fedxcorp | Shippingport | PA | Nonmetallic Mineral Product Manufacturing327420 | — | ◐ LIKELY ACTIVE |
| NCNitterhouse Concrete Precast Plt | Chambersburg | PA | Nonmetallic Mineral Product Manufacturing327390 | 100-499 | ◐ LIKELY ACTIVE |
| OGOwens-brockway Glass Container INC - Plant 19 | Brockway | PA | Nonmetallic Mineral Product Manufacturing327213 | — | ◐ LIKELY ACTIVE |
| OBOwens Brockway Glass Container Plt 18 | Brockway | PA | Nonmetallic Mineral Product Manufacturing327213 | — | ◐ LIKELY ACTIVE |
| PEPgh Elec Insulation Inc/munhall | Munhall | PA | Nonmetallic Mineral Product Manufacturing327999 | — | ◐ LIKELY ACTIVE |
| RBRedland Brick Inc/harmar Plt | Cheswick | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◐ LIKELY ACTIVE |
| SGSaint Gobain Abrasives Montgomeryville Plt | Montgomeryville | PA | Nonmetallic Mineral Product Manufacturing327910 | — | ◐ LIKELY ACTIVE |
| UGUS Gypsum - Washingtonville Plant | Danville | PA | Nonmetallic Mineral Product Manufacturing327420 | — | ◐ LIKELY ACTIVE |
| BIBpi INC - New Castle Plant | New Castle | PA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
Aero Aggregates of North America | Eddystone | PA | Nonmetallic Mineral Product Manufacturing327215 | 20-99 | ◐ LIKELY ACTIVE |
| ASArmina Stone | Cheswick | PA | Nonmetallic Mineral Product Manufacturing327991 | 100-499 | ◐ LIKELY ACTIVE |
| BBBeavertown Block CO | Middleburg | PA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| CGCap Glass Allentown | Northampton | PA | Nonmetallic Mineral Product Manufacturing327211 | 1-19 | ◐ LIKELY ACTIVE |
| CCContinental Concrete Products, Inc | Pottstown | PA | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| CPCustom Processing Services, LLC | East Greenville | PA | Nonmetallic Mineral Product Manufacturing327992 | 20-99 | ◐ LIKELY ACTIVE |
| DVDelaware Valley Concrete Hatboro Plt | Hatboro | PA | Nonmetallic Mineral Product Manufacturing327320 | 100-499 | ◐ LIKELY ACTIVE |
| ECEsterly Concrete Co. Inc. | Sinking Spring | PA | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| GBGil Berry & Associates, INC. | Mckeesport | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◐ LIKELY ACTIVE |
| HCHeartland Cement Sales CO | Bethlehem | PA | Nonmetallic Mineral Product Manufacturing327310 | 20-99 | ◐ LIKELY ACTIVE |
| HHHenry H. Ross and Son, INC. | Lititz | PA | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |
| MCMasters Concrete Products | Kingsley | PA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| TETherm-O-Rock East, Inc. | New Eagle | PA | Nonmetallic Mineral Product Manufacturing327992 | 20-99 | ◐ LIKELY ACTIVE |
| WSWeaver Superior Walls, LLC | Ephrata | PA | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| ECEagle Concrete Products, INC. | Somerset | PA | Nonmetallic Mineral Product Manufacturing327390 | 1-19 | ◐ LIKELY ACTIVE |
| FWFour Winds Concrete, INC. | Bethlehem | PA | Nonmetallic Mineral Product Manufacturing327310 | 100-499 | ◐ LIKELY ACTIVE |
| PIPennsylvania Insulating Glass CORP. | Lewistown | PA | Nonmetallic Mineral Product Manufacturing327211 | 20-99 | ◐ LIKELY ACTIVE |
| SISay-core, INC. | Portage | PA | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |