| PPozzolanic | Denver | CO | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| PIPozzolanic Intl | Denver | CO | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| PPPrecon Properties | Tampa | FL | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| PMPrometheus Materials INC | Longmont | CO | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| PSP&s Scaffolding Services Incorp. | Apple Valley | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| RRctl | El Paso | TX | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| RMReady Mix USA INC. | Birmingham | AL | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| RRRed Rock Transportation, L.c. | Cannonville | UT | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| RCRiver Cement Sales Company | Atlanta | GA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| RCRiverside Cement CO | Riverside | CA | Nonmetallic Mineral Product Manufacturing327124 | — | ◇ UNVERIFIED |
| RPRmc Pacific Materials LLC Dba Cemex | Redwood City | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix | Paramount | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix, Ltd, a California Limited Partnership | Pico Rivera | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| RWRoyal White Cement | Houston | TX | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| SISanjel (usa) INC. | Fort Lupton | CO | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| SRService Rock Prods INC Barstow | Barstow | CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| SRService Rock Prods INC Victorville | Victorville | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| SRService Rock Products INC Fort Irwin | Fort Irwin | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| SRService Rock Products INC Ridgecrest | Ridgecrest | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| SCSesco Cement, CORP. | Houston | TX | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| STShipping Terminal | Salt Lake City | UT | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| SCSika Corporation | Elko | NV | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| SCSika Corporation | Marion | OH | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| SRSoutheast Ready Mix, LLC | Garden City | GA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| SFStaff Force, INC. | Houston | TX | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| SPStucco Plant | Big Horn | WY | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| SCSuperb Curb | Cape Coral | FL | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| SMSuperior Mobile Concrete LLC | Piedmont | SC | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| SISurplus Items INC | Seattle | WA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| TRTehachapi Rmc | Tehachapi | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| TATeichert Aggregates | Roseville | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| TLTexas Lehigh Cement Company LP | Buda | TX | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| TATitan American LLC | Delray Beach | FL | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| TSTitusville Supply Company | Titusville | PA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| TMTransit Mix CORP. | Brooklyn | NY | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| TITreffinger Inc. | Garland | TX | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| TRTriangle Rock Products | Fowler | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| TPTriCircle Pavers, Inc. | Bartow | FL | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| TTTrue Texas Concrete LLC | Houston | TX | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| USUnderground Supply, Inc. | Whately | MA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| UCUniversal Cement LLC | Chicago | IL | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| UCUS Cement, LLC | Perry | GA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| UOUsdol Osha - (mobile) | Phenix City | AL | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| VCVanDerVart Concrete Products, LLC | Sheboygan | WI | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois Building Materials LLC Yard 1032 | Chicago | IL | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| VCVOCO Corp. | Lincoln | RI | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| WLWa317940355 - Lafarge North America INC | Vancouver | WA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| WVWashburn Vault Company Inc. | Hinsdale | NH | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| WCWayne County Highway Dept Bin 3314620 | Palmyra | NY | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| WSWestern States Wholesale INC Dba Patio Industries | Ontario | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
