| AGArdagh Glass INC. (port Allegany) | Port Allegany | PA | Nonmetallic Mineral Product Manufacturing327213 | 100-499 | ● ACTIVE |
Du-co Ceramics Company | Saxonburg | PA | Nonmetallic Mineral Product Manufacturing327110 | 100-499 | ● ACTIVE |
Gichner Systems Group, INC. | Dallastown | PA | Nonmetallic Mineral Product Manufacturing327320 | 100-499 | ● ACTIVE |
High Concrete Group, LLC | Denver | PA | Nonmetallic Mineral Product Manufacturing327390 | 100-499 | ● ACTIVE |
| MRMagnesita Refractories/york | York | PA | Food Manufacturing311119 | 100-499 | ● ACTIVE |
Mcdanel Advanced Ceramic Technologies, LLC | Beaver Falls | PA | Nonmetallic Mineral Product Manufacturing327110 | 100-499 | ● ACTIVE |
National Magnetics Group, INC. | Bethlehem | PA | Nonmetallic Mineral Product Manufacturing327110 | 100-499 | ● ACTIVE |
Schott North America, INC. | Duryea | PA | Nonmetallic Mineral Product Manufacturing327212 | 100-499 | ● ACTIVE |
| UCUniversal Concrete Prod Corp/stowe | Stowe | PA | Nonmetallic Mineral Product Manufacturing327320 | 100-499 | ● ACTIVE |
| UGUS Gypsum CO - Aliquippa Facility | Aliquippa | PA | Nonmetallic Mineral Product Manufacturing327420 | 100-499 | ● ACTIVE |
| VMVitro Meadville Flat Glass Meadville Plt/crawford | Cochranton | PA | Nonmetallic Mineral Product Manufacturing327211 | 100-499 | ● ACTIVE |
Macinnis Group LLC | Roaring Spring | PA | Nonmetallic Mineral Product Manufacturing327390 | 100-499 | ● ACTIVE |
Schott Pharma Usa, INC. | Lebanon | PA | Nonmetallic Mineral Product Manufacturing327212 | 100-499 | ● ACTIVE |
| DLDutchland LLC | Gap | PA | Nonmetallic Mineral Product Manufacturing327390 | 100-499 | ◐ LIKELY ACTIVE |
| MCMclanahan CORP | Hollidaysburg | PA | Nonmetallic Mineral Product Manufacturing327400 | 100-499 | ◐ LIKELY ACTIVE |
| MGModerne Glass CO INC | Aliquippa | PA | Nonmetallic Mineral Product Manufacturing327215 | 100-499 | ◐ LIKELY ACTIVE |
| SGStoelzle Glass USA Inc/monaca Plt | Monaca | PA | Nonmetallic Mineral Product Manufacturing327212 | 100-499 | ◐ LIKELY ACTIVE |
| UPUnited Plate Glass Company (Butler) | Butler | PA | Nonmetallic Mineral Product Manufacturing327215 | 100-499 | ◐ LIKELY ACTIVE |
| BEBloom Engineering CO Inc/baldwin | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327120 | 100-499 | ◇ UNVERIFIED |
| BSB.C. Stone, Inc. | Everett | PA | Nonmetallic Mineral Product Manufacturing327991 | 100-499 | ◐ LIKELY ACTIVE |
| PGPittsburgh Glass Works LLC | Tyrone | PA | Nonmetallic Mineral Product Manufacturing327215 | 100-499 | ◐ LIKELY ACTIVE |
| AEArdex Engineered Cements | Aliquippa | PA | Nonmetallic Mineral Product Manufacturing327310 | 100-499 | ◐ LIKELY ACTIVE |
| NCNitterhouse Concrete Precast Plt | Chambersburg | PA | Nonmetallic Mineral Product Manufacturing327390 | 100-499 | ◐ LIKELY ACTIVE |
| ASArmina Stone | Cheswick | PA | Nonmetallic Mineral Product Manufacturing327991 | 100-499 | ◐ LIKELY ACTIVE |
| DVDelaware Valley Concrete Hatboro Plt | Hatboro | PA | Nonmetallic Mineral Product Manufacturing327320 | 100-499 | ◐ LIKELY ACTIVE |
| FWFour Winds Concrete, INC. | Bethlehem | PA | Nonmetallic Mineral Product Manufacturing327310 | 100-499 | ◐ LIKELY ACTIVE |
| THTerre Hill Concrete Products Plant 1 & 3 | Terre Hill | PA | Nonmetallic Mineral Product Manufacturing327331 | 100-499 | ◐ LIKELY ACTIVE |
| GBGoldbond Building Products--Shippingport | Shippingport | PA | Nonmetallic Mineral Product Manufacturing327420 | 100-499 | ◐ LIKELY ACTIVE |
| UCUniversal Concrete Products Corporation | Stowe | PA | Nonmetallic Mineral Product Manufacturing327390 | 100-499 | ◐ LIKELY ACTIVE |
| UGUS Gypsum Washingtonville | Danville | PA | Nonmetallic Mineral Product Manufacturing327420 | 100-499 | ◐ LIKELY ACTIVE |
| THTerre Hill Silo Company INC | Terre Hill | PA | Nonmetallic Mineral Product Manufacturing327331 | 100-499 | ◐ LIKELY ACTIVE |
| ALArdex, L.P. Corporate Office | Aliquippa | PA | Nonmetallic Mineral Product Manufacturing327310 | 100-499 | ◐ LIKELY ACTIVE |
| CMConewago Manufacturing | Hanover | PA | Nonmetallic Mineral Product Manufacturing327390 | 100-499 | ◐ LIKELY ACTIVE |
| JMJDM Materials Company | Huntington Valley | PA | Nonmetallic Mineral Product Manufacturing327320 | 100-499 | ◐ LIKELY ACTIVE |
| JLJohn Lar - Morrisville | Fairless Hills | PA | Nonmetallic Mineral Product Manufacturing327320 | 100-499 | ◐ LIKELY ACTIVE |
| MAMorgan Advanced Materials Certech Inc | Wilkes Barre | PA | Nonmetallic Mineral Product Manufacturing327120 | 100-499 | ◐ LIKELY ACTIVE |
| MAMorgan Advanced Materials Certech Inc | Wilkes-Barre | PA | Nonmetallic Mineral Product Manufacturing327120 | 100-499 | ◐ LIKELY ACTIVE |
| NLNortheast LG | Jessup | PA | Nonmetallic Mineral Product Manufacturing327215 | 100-499 | ◐ LIKELY ACTIVE |
| OGOwens-Brockway Glass Container - Brockway Plant 18 | Brockway | PA | Nonmetallic Mineral Product Manufacturing327213 | 100-499 | ◐ LIKELY ACTIVE |
| OGOwens-Brockway Glass Container - Crenshaw Plant 19 | Brockport | PA | Nonmetallic Mineral Product Manufacturing327213 | 100-499 | ◐ LIKELY ACTIVE |
| PAPen Argyl Plant | Pen Argyl | PA | Nonmetallic Mineral Product Manufacturing327331 | 100-499 | ◐ LIKELY ACTIVE |
| PPhiladelphia | Philadelphia | PA | Beverage and Tobacco Product Manufacturing312111 | 100-499 | ◐ LIKELY ACTIVE |
| T1Trulite 100 Business Center Drive | Cheswick | PA | Nonmetallic Mineral Product Manufacturing327215 | 100-499 | ◐ LIKELY ACTIVE |
| WRWestlake Royal Stone, LLC | Greencastle | PA | Nonmetallic Mineral Product Manufacturing327390 | 100-499 | ◐ LIKELY ACTIVE |
| WIWilkes-Barre IG | Mountain Top | PA | Nonmetallic Mineral Product Manufacturing327215 | 100-499 | ◐ LIKELY ACTIVE |
| MSMeshoppen Stone INC. | Meshoppen | PA | Nonmetallic Mineral Product Manufacturing327991 | 100-499 | ◇ UNVERIFIED |
| TITecho-bloc Incorporated | Pen Argyl | PA | Nonmetallic Mineral Product Manufacturing327331 | 100-499 | ◇ UNVERIFIED |