| SGS & G Concrete Company, Llc- Grantley Ave. Plant | Baltimore | MD | — | ◇ UNVERIFIED |
| SCS&g Concrete Edgewood | Edgewood | MD | — | ◇ UNVERIFIED |
| SCShell Chemical | Deer Park | TX | — | ◇ UNVERIFIED |
| SCShell Chemical LP - Martinez Catayst Plant | Martinez | CA | — | ◇ UNVERIFIED |
| SCShell Chemical Yabucoa, Inc.-yabucoa Refinery | Yabucoa | PR | — | ◇ UNVERIFIED |
| SOShell Opus Puget Sound Refinery | Anacortes | WA | — | ◇ 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 |
| SESilver Eagle Refining-woods Cross | Woods Cross | UT | — | ◇ UNVERIFIED |
| SCSiouxland Concrete CO | South Sioux City | NE | — | ◇ UNVERIFIED |
| SRSmackover Refinery | Smackover | AR | — | ◇ 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 |
| SCSouthern Concrete Materials-andrews Plant | Andrews | NC | — | ◇ UNVERIFIED |
| SCSouthern Concrete Materials - Bryson City | Bryson City | NC | — | ◇ UNVERIFIED |
| SCSouthern Concrete Materials-charlotte South Plant | Charlotte | NC | — | ◇ UNVERIFIED |
| SCSouthern Concrete Materials Fletcher Plant | Fletcher | NC | — | ◇ UNVERIFIED |
| SCSouthern Concrete Materials-hendersonville Plant | Hendersonville | NC | — | ◇ UNVERIFIED |
| SCSouthern Concrete Materials-lake Norman Plant | Stanley | NC | — | ◇ UNVERIFIED |
| SCSouthern Concrete Materials-salisbury Plant | Salisbury | NC | — | ◇ UNVERIFIED |
| SCSouthern Concrete Materials - Sherrills Ford | Sherrills Ford | NC | — | ◇ UNVERIFIED |
| SCSouthern Concrete Materials - Sylva Plant | Sylva | NC | — | ◇ UNVERIFIED |
| SESouthern Equipment Dba Ready Mix Concrete - Plant 6 | Apex | NC | — | ◇ UNVERIFIED |
| SESouthern Equipment - Raleigh Concrete Plant 4 | Cary | NC | — | ◇ UNVERIFIED |
| SRSouthern Rm LLC - Goldsboro | Goldsboro | NC | — | ◇ UNVERIFIED |
| SSSouthern Star Concrete - Mesquite Plant | Mesquite | TX | — | ◇ UNVERIFIED |
| SNSouth Norman Batch Plant | Norman | OK | — | ◇ UNVERIFIED |
| SRSouthside Ready Mix | Fort Smith | AR | — | ◇ UNVERIFIED |
| SCSpartan Concrete | Novi | MI | — | ◇ UNVERIFIED |
| SRSpecht Rd Rm | San Antonio | TX | — | ◇ UNVERIFIED |
| SRSpringdale Ready Mix | Springdale | AR | — | ◇ UNVERIFIED |
| SCSpringville Concrete Batch Plant | Springville | UT | — | ◇ UNVERIFIED |
| SISrm Inc-kelly Plant | Edmond | OK | — | ◇ UNVERIFIED |
| SISrm Inc-norman Plant | Norman | OK | — | ◇ UNVERIFIED |
| SPStaker & Parson Companies- Beck Street Consolidated | Salt Lake City | UT | — | ◇ UNVERIFIED |
| SPStaker & Parson Companies Point West Ready-mix Concrete | Lehi | UT | — | ◇ UNVERIFIED |
| SCStandard Concrete Products INC | Santa Monica | CA | — | ◇ UNVERIFIED |
| SMStandard Materials Group, Inc.- Portable Rm 5036 | Bentonville | AR | — | ◇ UNVERIFIED |
| SRStandard Ready Mix Concrete | Sioux City | IA | — | ◇ UNVERIFIED |
| SDSteel Dynamics Columbus, LLC | Columbus | MS | — | ◇ UNVERIFIED |
| SCStephens City | Stephens City | VA | — | ◇ UNVERIFIED |
| S2Stephenville 2 | Stephenville | TX | — | ◇ UNVERIFIED |
| SCSterling Concrete CORP | Sterling | MA | — | ◇ UNVERIFIED |
| SRStillwater Ready Mix INC / Concrete Batch Plant | Stillwater | OK | — | ◇ UNVERIFIED |
| SCStrata Concrete-west Fargo | West Fargo | ND | — | ◇ UNVERIFIED |
| SVSummit View | Fort Collins | CO | — | ◇ UNVERIFIED |
| STSuncoast Tampa Bay Block & R-m CO INC | Tampa | FL | — | ◇ UNVERIFIED |
| SCSuncor Commerce City Refinery - East Plant | Commerce City | CO | — | ◇ UNVERIFIED |
| SCSunroc Corporation | Hurricane | UT | — | ◇ UNVERIFIED |
| SCSunroc Corporation Badger Concrete Batch Plant | Boise | ID | — | ◇ UNVERIFIED |
| SISunrock Industries LLC - Eastern Wake Facility | Zebulon | NC | — | ◇ UNVERIFIED |
| SCSuperior Concrete - Dulles | Chantilly | VA | — | ◇ UNVERIFIED |
| SCSuperior Concrete Materials INC - Washington Facility | Washington | DC | — | ◇ UNVERIFIED |
| SMSuperior Materials 103 | Brighton | MI | — | ◇ UNVERIFIED |
| SMSuperior Materials 32 | Detroit | MI | — | ◇ UNVERIFIED |
| SMSuperior Materials 35 | Romulus | MI | — | ◇ UNVERIFIED |
| SMSuperior Materials 36 | Auburn Hills | MI | — | ◇ UNVERIFIED |
| SMSuperior Materials 38 | Ann Arbor | MI | — | ◇ UNVERIFIED |
| SMSuperior Materials Plant 101 | Mount Clemens | MI | — | ◇ UNVERIFIED |
| SMSuperior Materials Plant 20 | Flint | MI | — | ◇ UNVERIFIED |
| SYSuzio York Hill Concrete | New Haven | CT | — | ◇ UNVERIFIED |
| SHS&w Holly Ridge Plant | Holly Ridge | NC | — | ◇ UNVERIFIED |
| SKS&w Kinston Plant | Kinston | NC | — | ◇ UNVERIFIED |
| SLS&w Little River Plant | Little River | SC | — | ◇ UNVERIFIED |
| SMS&w Murrells Inlet | Murrells Inlet | SC | — | ◇ UNVERIFIED |
| SNS&w New Bern Plant | New Bern | NC | — | ◇ UNVERIFIED |
| SWS & W Ready Mix CO - Lumberton | Lumberton | NC | — | ◇ UNVERIFIED |
| SRS&w Ready Mix Concrete Co., INC. - S. Reilly Road Plant | Fayetteville | NC | — | ◇ UNVERIFIED |
| SWS & W Ready Mix Concrete CO. - Morehead City | Morehead City | NC | — | ◇ UNVERIFIED |
| SWS & W Ready Mix Concrete Company - Boliv | Bolivia | NC | — | ◇ UNVERIFIED |
| SWS & W Ready Mix Concrete Company -goldsboro Plant # 28 | Goldsboro | NC | — | ◇ UNVERIFIED |
| SRS&w Ready Mix Concrete Company INC - Elizabethtown Plant | Elizabethtown | NC | — | ◇ UNVERIFIED |
| SWS & W Ready Mix Concrete Company Wilmington | Wilmington | NC | — | ◇ UNVERIFIED |
| SWS & W Ready Mix Concrete - Hubert | Hubert | NC | — | ◇ UNVERIFIED |
| SWS & W Ready Mix Concrete Jacksonville | Jacksonville | NC | — | ◇ UNVERIFIED |
| SCSws Concrete-bonds Plant | Concord | NC | — | ◇ UNVERIFIED |
| SCSws Concrete-clover Plant | Clover | SC | — | ◇ UNVERIFIED |
| SCSws Concrete-concord Plant | Concord | NC | — | ◇ UNVERIFIED |
| SCSws Concrete-main Plant | Charlotte | NC | — | ◇ UNVERIFIED |
| SCSws Concrete-monroe Plant | Monroe | NC | — | ◇ UNVERIFIED |
| SCSws Concrete-richburg Plant | Richburg | SC | — | ◇ UNVERIFIED |
| SCSws Concrete-rock Hill Plant | Rock Hill | SC | — | ◇ UNVERIFIED |
| SCSws Concrete-stallings Plant | Stallings | NC | — | ◇ UNVERIFIED |
| SSS&w Spring Lake Plant | Spring Lake | NC | — | ◇ UNVERIFIED |
| SWS&w Wallace Plant | Wallace | NC | — | ◇ UNVERIFIED |
| TRTaft Ready Mix Plant | Orlando | FL | — | ◇ UNVERIFIED |
| TCTalons Cove Batch Plant | Eagle Mountain | UT | — | ◇ UNVERIFIED |
