| RMReady Mix USA LLC - Enterprise Plant | Enterprise | AL | — | ◇ UNVERIFIED |
| RMReady Mix Usa, LLC - Florence Plant | Florence | AL | — | ◇ UNVERIFIED |
| RMReady Mix Usa, LLC - Harvest Plant | Harvest | AL | — | ◇ UNVERIFIED |
| RMReady Mix USA Llc- Kingsport Plant | Kingsport | TN | — | ◇ UNVERIFIED |
| RMReady Mix USA Llc-lawrenceville Plant | Lawrenceville | GA | — | ◇ UNVERIFIED |
| RMReady Mix USA LLC - Midtown Atlanta Plant | Atlanta | GA | — | ◇ UNVERIFIED |
| RMReady Mix Usa, LLC - Mooresville Plant - 5217 | Madison | AL | — | ◇ UNVERIFIED |
| RMReady Mix USA Llc-morristown Plant | Morristown | TN | — | ◇ UNVERIFIED |
| RMReady Mix USA LLC - Panama City Main Plant | Panama City | FL | — | ◇ UNVERIFIED |
| RMReady Mix USA Llc- Rockford Plant | Rockford | TN | — | ◇ UNVERIFIED |
| RMReady Mix Usa, LLC - Russellville Plant | Russellville | AL | — | ◇ UNVERIFIED |
| RMReady Mix USA LLC - Tuscumbia Plant | Tuscumbia | AL | — | ◇ UNVERIFIED |
| RMReady Mix Usa, LLC - Woodstock Plant | Woodstock | GA | — | ◇ UNVERIFIED |
| RMReady Mix Usa, Marietta Plant | Marietta | GA | — | ◇ UNVERIFIED |
| RMReady Mix Usa-maynardville | Maynardville | TN | — | ◇ UNVERIFIED |
| RMReady Mix USA Metro Shop | Montgomery | AL | — | ◇ UNVERIFIED |
| RMReady Mix USA - Mitlon | Milton | FL | — | ◇ UNVERIFIED |
| RMReady Mix USA - Tarrant Plant | Birmingham | AL | — | ◇ UNVERIFIED |
| RMReady Mix USA - Weems Rd Plant | Tallahassee | FL | — | ◇ UNVERIFIED |
| RRReames Rd Concrete Plant | Charlotte | NC | — | ◇ UNVERIFIED |
| RBRec - Belle Plaine | Henderson | MN | — | ◇ UNVERIFIED |
| RCRedi-mix Concrete Prosper Plan | Prosper | TX | — | ◇ UNVERIFIED |
| RDRedi-mix Dallas | Dallas | TX | — | ◇ UNVERIFIED |
| RBRedland Brick Incorporated - Lawrenceville Plant | Lawrenceville | VA | — | ◇ UNVERIFIED |
| RPRenwick Plant | Houston | TX | — | ◇ UNVERIFIED |
| RPRex Portable Concrete Plant No. 2701 | Claremore | OK | — | ◇ UNVERIFIED |
| RPRichardson Plant | Richardson | TX | — | ◇ UNVERIFIED |
| RPRichmond Plant | Richmond | TX | — | ◇ UNVERIFIED |
| RRRidge Rock - East Ellijay Plant | East Ellijay | GA | — | ◇ UNVERIFIED |
| RCRiemers-kaufman Concrete Products | Lincoln | NE | — | ◇ UNVERIFIED |
| RARinker Albuquerque Pipe | Bernalillo | NM | — | ◇ UNVERIFIED |
| RARinker Alexandria Pipe | Alexandria | LA | — | ◇ UNVERIFIED |
| RCRinker Charlotte Pipe | Concord | NC | — | ◇ UNVERIFIED |
| RCRinker Columbia Pipe | Columbia | SC | — | ◇ UNVERIFIED |
| RERinker El Paso Pipe | Santa Teresa | NM | — | ◇ UNVERIFIED |
| RGRinker Greenfield Pipe | Greenfield | IN | — | ◇ UNVERIFIED |
| RLRinker Las Vegas Pipe | Henderson | NV | — | ◇ UNVERIFIED |
| RMRinker Materials Hydro Conduit- Frederick | Frederick | MD | — | ◇ UNVERIFIED |
| RMRinker Miami Pipe | Miami | FL | — | ◇ UNVERIFIED |
| RMRinker Middletown Pipe | Middletown | DE | — | ◇ UNVERIFIED |
| RMRinker Myrtle Beach Pipe | Aynor | SC | — | ◇ UNVERIFIED |
| RORinker Oklahoma City Pipe | Oklahoma City | OK | — | ◇ UNVERIFIED |
| RORinker Orlando Pipe | Apopka | FL | — | ◇ UNVERIFIED |
| RPRinker Pittsburgh Pipe | Oakdale | PA | — | ◇ UNVERIFIED |
| RRRinker Reno Pipe | Sparks | NV | — | ◇ UNVERIFIED |
| RSRinker Stockbridge Pipe | Stockbridge | GA | — | ◇ UNVERIFIED |
| RWRinker Whitestown Pipe | Whitestown | IN | — | ◇ UNVERIFIED |
| RWRinker Wilson Pipe | Wilson | NC | — | ◇ UNVERIFIED |
| RERivers Edge Ready Mix - Prior Lake | Prior Lake | MN | — | ◇ UNVERIFIED |
| RCRmc Carolina Materials Incorporated | Morrisville | NC | — | ◇ UNVERIFIED |
| RPRmc Pacific Materials Incorporated | San Jose | CA | — | ◇ UNVERIFIED |
| RTRmusa - Troy | Troy | AL | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix | Beaumont | CA | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix Lake Forest Plant 18 | Foothill Ranch | CA | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix San Bernardino Plant 12 | San Bernardino | CA | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix Santa Ana Plant 17 | Santa Ana | CA | — | ◇ UNVERIFIED |
| RRRobertsons Rialto Batch and Rock Plant | Rialto | CA | — | ◇ UNVERIFIED |
| RRRock & Rail - Highway 34 Facility | Windsor Area | CO | — | ◇ UNVERIFIED |
| RPRockwall Plant | Rockwall | TX | — | ◇ UNVERIFIED |
| RRRonald Reagan Cbp | Georgetown | TX | — | ◇ UNVERIFIED |
| RARustin Ardmore Rmc Plant | Ardmore | OK | — | ◇ UNVERIFIED |
| SSacaton | Sacaton | AZ | — | ◇ UNVERIFIED |
| SASan Angelo 1 | San Angelo | TX | — | ◇ UNVERIFIED |
| SASan Angelo 2 | San Angelo | TX | — | ◇ UNVERIFIED |
| SFSan Francisco (a) | San Francisco | CA | — | ◇ UNVERIFIED |
| S1Savannah (plant 11) | Savannah | GA | — | ◇ UNVERIFIED |
| SCSchuster Concrete Ready Mix, LLC | Owings Mills | MD | — | ◇ UNVERIFIED |
| SCSchuster Concrete Ready Mix Llc-guilford Rd | Jessup | MD | — | ◇ UNVERIFIED |
| SCSchuster Concrete Ready Mix Llc-hobbs Rd | Denton | MD | — | ◇ UNVERIFIED |
| SCSchuster Concrete Ready Mix Llc-southlawn Ln | Rockville | MD | — | ◇ UNVERIFIED |
| SBSeminole Bp | Seminole | OK | — | ◇ UNVERIFIED |
| SRSemo Ready Mix Inc-cape Girardeau | Jackson | MO | — | ◇ UNVERIFIED |
| SCSequatchie Concrete Service, INC. | Knoxville | TN | — | ◇ UNVERIFIED |
| SRService Rock Products INC 4th St | Henderson | NV | — | ◇ UNVERIFIED |
| SRService Rock Products INC. - Beesley Nv | Las Vegas | NV | — | ◇ UNVERIFIED |
| SRService Rock Products INC Lone Mountain Nv Facility | Las Vegas | NV | — | ◇ UNVERIFIED |
| SRService Rock Products INC Sloan | Las Vegas | NV | — | ◇ UNVERIFIED |
| SRService Rock Products - Pahrump Plant | Pahrump | NV | — | ◇ UNVERIFIED |
| SCS&g Concrete Brooklyn Plant | Baltimore | MD | — | ◇ UNVERIFIED |
| SGS & G Concrete Company, Llc- Grantley Ave. Plant | Baltimore | MD | — | ◇ UNVERIFIED |
| SCS&g Concrete Edgewood | Edgewood | MD | — | ◇ UNVERIFIED |
 Sherman Industries INC. Bessemer Plant | Bessemer | AL | — | ◇ UNVERIFIED |
| Sherman Industries INC N Central Al Div | Rainbow City | AL | — | ◇ UNVERIFIED |
| Sherman Industries - Leeds Plant | Leeds | AL | — | ◇ UNVERIFIED |
| SPSherman Plant | Sherman | TX | — | ◇ UNVERIFIED |
| STSherman Tarrant Plant | Birmingham | AL | — | ◇ UNVERIFIED |
| SBSierra Building Products | Stockton | CA | — | ◇ UNVERIFIED |
| SCSiouxland Concrete CO | South Sioux City | NE | — | ◇ UNVERIFIED |
| SPSmokey Point Concrete | Arlington | WA | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix Concrete | South Pittsburg | TN | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix Concrete, LLC | Nashville | TN | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix Concrete, LLC | Saint Cloud | FL | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix Concrete, LLC - Capital Ready Mix | Colorado Springs | CO | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix Concrete LLC - (formerly Metro Ready Mix Concrete, Llc) | Franklin | TN | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix Concrete, LLC - Highway 85 Ready | Colorado Springs | CO | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix, LLC | Murfreesboro | TN | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix, Plant 31 | Knoxville | TN | — | ◇ UNVERIFIED |
| SRSonag Ready Mix | Milwaukee | WI | — | ◇ UNVERIFIED |
| SCSouth Carolina Prestress CORP | Florence | SC | — | ◇ UNVERIFIED |
| SCSouth Central Concrete Bayport Plant | Pasadena | TX | — | ◇ UNVERIFIED |
