| SCSilvi Concrete of Limerick | Limerick | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SCSilvi Concrete of Philadelphia | Philadelphia | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SGS&l Glassworks INC | Fairless Hills | PA | Nonmetallic Mineral Product Manufacturing327211 | — | ◇ UNVERIFIED |
| SHSouth Hills Cement Contracting | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SGSpecialized Grinding Systems Dba Slicing Tech | Bangor | PA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| SISpectrocell, INC. | Oreland | PA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| SJSponge Jet INC | Montrose | PA | Nonmetallic Mineral Product Manufacturing327910 | — | ◇ UNVERIFIED |
| SCSR Concrete Resurfacing, Inc. | Luthersburg | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SGStained Glass By Pamela | Allison Park | PA | Nonmetallic Mineral Product Manufacturing327211 | — | ◇ UNVERIFIED |
| SGStained Glass Corner, INC. | Warrendale | PA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| SCStandard Ceramic Supply Company | Carnegie | PA | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| SCSteel City Glass, INC. | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| SCStephen Clay LLC | Philadelphia | PA | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| SHStoke Hole Pottery | Indiana | PA | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| SDSunworks Decorative Concrete LLC | Annville | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SMSusquehanna Marble and Granite, LLC | Montoursville | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| TCTarr Concrete & Supplies, INC. | Washington | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| TITecho-bloc Incorporated | Pen Argyl | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| TCThe Ceramic Shop | Philadelphia | PA | Nonmetallic Mineral Product Manufacturing327112 | — | ◇ UNVERIFIED |
| TLThe Lane Construction Crafton | Pittsburgh, Pa | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| TOTherm O Rock Inc/new Eagle Plt | New Eagle | PA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| TWThe Window Factory | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| TRThree Rivers Art Glass LLC | Saxonburg | PA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| TSTimeless Stone Fabrication Inc. | Perkasie | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| TSTitusville Supply Company | Titusville | PA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| TFTop Floor llc | Zelienople | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| TMTri-state Marble and Granite | Philadelphia | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| TITrojan, INC. | Meadville | PA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| TGTroy Granite | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| TGTroy Granite INC. | Camp Hill | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| UGUltimate Granite Surfaces, INC. | Gibsonia | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| UBUnited Block CO. | Chicora | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| USUnited States Products CO. | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327910 | — | ◇ UNVERIFIED |
| UNUsace New River Chamber Batch Concrete Plt | Monaca | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| UDU.s. Dol Osha | Chambersburg | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| VCVacuum Ceramics, INC. | Mount Braddock | PA | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| VCVulcan Const Hanover Quarry & Carmeuse Lime Kilns | Hanover | PA | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| WCWesterwald Corporation of America | Scenery Hill | PA | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| WGWestmoreland Glass Block | North Huntingdon | PA | Nonmetallic Mineral Product Manufacturing327211 | — | ◇ UNVERIFIED |
| WGWienerberger Group (general Shale) | Darlington | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| WEWilliam Elston Septic Tanks | Jefferson Township | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| WCWine Concrete Products, INC. | Sewickley | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| WSWinslow's Stained Glass, INC. | Limerick | PA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| WIWorks in Stone INC | Ottsville | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| YCYork Concrete Company | York | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| ZVZeiser Vault Company | Nescopeck | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| ZMZumrut Marble & Granite INC. | Bethlehem | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
