| LNLafarge North America INC. and Its Successors | Baltimore | MD | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| LRLafarge Ravena Cement Plant | Ravena | NY | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| LCLegacy Cast Stone and Composites LLC | North Las Vegas | NV | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| LCLehigh Cement Company | College Park | GA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| LCLehigh Cement Company LLC | Fort Lauderdale | FL | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| LCLehigh Cement Company LLC | Mitchell | IN | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| LCLehigh Cement West LLC | Redwood City | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| LSLone Star Ind INC Dba Buzzi Unicem USA Pryor Cement Plant | Pryor | OK | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| LSLone Star Industries Dba Buzzi Unicem St. Louis | St Louis | MO | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| LSLone Star Industries Portland Cement Plant | Houston | TX | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| LSLone Star Industries Portland Cement Plant | Dallas | TX | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| MCMaryneal Cement Plant | Maryneal | TX | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| MBMaster Block INC | El Mirage | AZ | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| MPMasterpiece Precast INC | Haskell | NJ | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| MPMaterials Packaging CORP | Draper | UT | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| MVMcclain's Vault Company | Geneva | AL | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| MPMidlothian Plant | Midlothian | TX | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
 Mitsubishi Cement Corporation | Long Beach | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| Mitsubishi Cement Corporation Cushenbury Plant | Lucerne Valley | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| MMMmc Material, INC | Meridian | MS | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| MTMurray Terminal | Murray | UT | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| NCNational Cement CO of California INC | Lebec | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| NCNevada Cement Company | Sacramento | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| NENokomis Equity Group LLC | Venice | FL | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| NCNovada Cement Fl, LLC | Palmetto | FL | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| OHODC Holdings LLC | Evans | CO | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| OSOrchard Supply Company | San Jose | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ▲ REPORTED CLOSED |
| OSOrchard Supply Hardware | Sunnyvale | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| PMPd Mechanical, INC. | Apple Valley | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| PCPhoenix Cement Company's Clarkdale Facility | Clarkdale | AZ | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| 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 |
