| RVRedwood Valley Gravel Product INC | Redwood Valley | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RAReliable Asphalt Corporation | Chicago | IL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RCReliable Concrete Products and Ornamental Iron, INC. | Kansas City | KS | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RPRev's Pre-Cast Concrete Corp. | Waukesha | WI | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RVRex Vault and Mausoleum Services, INC. | Newton | IL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RCRialto Concrete Products, INC. | Palmdale | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RSRichey Services, LLC | Grove | OK | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RERichwood Equipment Company LLC | Springfield | OH | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RRRiley Ready Mix & Materials, INC. | Saint Louis | MO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RIRinker Indianapolis Pipe | Indianapolis | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RSRiviera Stoneworks, INC. | Foley | AL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RSRj Staab Stone Company of Florida, LLC | Gainesville | FL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RPRmr Products INC | Pacoima | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RVRoberts Vault Company, INC. | Dade City | FL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RHRock Hill Concrete LLC | Dayton | WA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RMRocky Mountain Precast, LLC | Yigo | GU | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RMRocky Mountain Prestress | Greeley | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RMRocky Mt Prestressed | Sheridan | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RORohn Ornamental Concrete INC | Bethlehem | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RRR & R Garden Supply, INC. | Medley | FL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RBRussell Block Co., INC. | Russell | KS | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RVRustin Vault & Monument Co., INC. | Chipley | FL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RSR.w. Sidley, INC. | Slippery Rock | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RSR.w. Sidley, INC. | Youngwood | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SSSacramento Stucco | West Sacramento | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SVSaline Vault Company INC. | Sweet Springs | MO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SDSan Diego Precast Concrete INC | San Diego | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SAS and N Concrete | Anaconda | MT | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SISandstone, Inc. | Shawnee | KS | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SJSan Joaquin Gunite | Sjvapcd | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| S2Savid 26 LLC | Baldwin Park | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| S2Savid 26 LLC | Ventura | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SNSax Nick LLC | Gibsonville | NC | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SISay-core, INC. | Portage | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SCScituate Concrete Products | Marshfield | MA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SCScripture's Concrete INC. | Rockport | ME | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SSSculptured Stone INC. | Fairfield | NJ | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SCSeaboard Concrete Products Company Incorporated | Richmond | VA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SVSecure Vault Company, INC. | Cook | MN | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SISelectcrete INC | Bakersfield | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SSSelkirk Stone INC | Sandpoint | ID | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SPSeminole Precast Manufacturing, INC. | Macon | GA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SCSemper Concrete Products | Butler | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SCSequatchie Concrete Service, INC. - Knoxville | Knoxville | TN | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| STSergio Tiscarreno Dba Bella Mouldings | Bell Gardens | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SGS - G Concrete Company, Llc- Grantley Ave. Plant | Baltimore | MD | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SESharper Edge | Kansas City | MO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SCShea Concrete Products | Nottingham | NH | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SRSherman Ready Mix Concrete Co.(n.birmingham) | Birmingham | AL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SSShondel's Stone Creations | Centerville | IA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
