| KGKing General Contractors INC | Bristol | VA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| KSKrm South LLC - Hardeeville Plant 16 | Hardeeville | SC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| LBLeonard Block Company | Winston Salem | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| LBLightweight Block CO | Lynchburg | VA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| LBLightweight Block Lexington Corporation | Lexington | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| LPLindsay Precast LLC - Dacono | Dacono Area | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| LMLockheed Martin Aeronautical Company | Meridian | MS | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| LWL & W Concrete | Norridgewock | ME | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MAM. A. Concrete Const- 32.5 Rd Gravel Pit | Grand Junction Area | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MEMaier, Ernst, INC. | Bladensburg | MD | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MCMathias Concrete - Alamosa Plant | Alamosa | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MCMcpherson Concrete - Lindsborg Concrete | Lindsborg | KS | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MIMenard Incorporated | Terre Haute | IN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MMMetromont Materials-catawba | Hickory | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MMMetromont Materials Limited Liability Company | North Wilkesboro | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MMetromont:whitehorse | Greenville | SC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MCMiles Concrete CO | Newfield | NJ | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MMMiller Material CO | Kansas City | MO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MCModern Concrete Products CO | Louisville | KY | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MDModern Disposal Services INC | Model City | NY | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MBMontfort Bros INC Block Plant | Fishkill | NY | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| NMNew Milford Block & Supply CORP. | New Milford | CT | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| NBNorthfield Block CO | Joliet | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| NBNorthfield Block CO | Channahon | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| NBNorthfield Block Company | Elgin | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| NBNorthfield Block Company | Indianapolis | IN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| NBNorthfield Block INC | Romeoville | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| OAOldcastle Apg Natl I/emigsville | Emigsville | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| OAOldcastle Apg New England | Victor | NY | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Easton | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Morrisville | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Folsom | NJ | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC. | Jacksonville | FL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| OPOlympian Precast INC | Redmond | WA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| OBOneonta Block CO | Oneonta | NY | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ODOre Design North Salt Lake Assembly Facility | North Salt Lake | UT | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ODOre Designs INC | Woods Cross | UT | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| PCPavestone Cst - Branchville, Nj Plant | Branchville | NJ | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| PCPbm Concrete INC | Rochelle | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| PBPensacola Block USA | Pensacola | FL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| PBPetersburg Block INC | Petersburg | WV | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| PCPhelps Cement Products INC | Phelps | NY | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| PCPhillips Concrete INC | Bridgewater Twp | NJ | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PBPompano Beach Facility | Pompano Beach | FL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| PCPonce Concrete Blk 1 | Ponce | PR | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| QOQuikrete of New Orleans | Harahan | LA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| RMReady Mix Usa, LLC - Sylacauga Block | Sylacauga | AL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| RCRobins Construction - 5101 State Hwy 285 | Antonito Area | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| RCRockford Cement Products CO | Rockford | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| RCRosebud Concrete INC | Mission | SD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
