| BCBlack Concrete Incorporated | Lexington | NC | — | ◐ LIKELY ACTIVE |
| BHBlack Hills | Pleasanton | TX | 20–99 | ◐ LIKELY ACTIVE |
| BRBlager Ready Mix Concrete Production | Urbana | IL | — | ◐ LIKELY ACTIVE |
| BLBlalock Lumber Company, L.p. | Sevierville | TN | — | ◐ LIKELY ACTIVE |
| BDBlue Dot Readi-mix 521 Plant | Fort Mill | SC | — | ◐ LIKELY ACTIVE |
| BQBNA Quikrete | Nashville | TN | 20–99 | ◐ LIKELY ACTIVE |
| BRBonifay Ready Mix Plant | Bonifay | FL | — | ◐ LIKELY ACTIVE |
| BCBoston Concrete Corp. | Lowell, MA | MA | 20–99 | ◐ LIKELY ACTIVE |
| BCBoxley Concrete Products of Va INC | Summersville | WV | — | ◐ LIKELY ACTIVE |
| BMBoxley Materials Company | Blue Ridge | VA | — | ◐ LIKELY ACTIVE |
| BRBoxley Ready Mix LLC - Roanoke Plant | Roanoke | VA | — | ◐ LIKELY ACTIVE |
| BRBoyd Ready Mix INC | Bryan | TX | 20–99 | ◐ LIKELY ACTIVE |
| BCBradley Concrete, INC. | Cleveland | TN | — | ◐ LIKELY ACTIVE |
| BOBranscome Operating LLC - Hofmeyer Pit | Charles City | VA | — | ◐ LIKELY ACTIVE |
| BSBrdm Sandlapper Concrete Llc-duncan | Duncan | SC | — | ◐ LIKELY ACTIVE |
| BMBreckenridge Material Company #3 | Chesterfield | MO | — | ◐ LIKELY ACTIVE |
| BPBreckenridge Plant 05 Festus | Festus | MO | — | ◐ LIKELY ACTIVE |
| BIBrown-wilbert INC - Lakeville | Lakeville | MN | — | ◐ LIKELY ACTIVE |
| BVBrown-wilbert Vault CO - Morris | Morris | MN | — | ◐ LIKELY ACTIVE |
| BVBrown-wilbert Vault CO - Redwood Falls | Redwood Falls | MN | — | ◐ LIKELY ACTIVE |
| BVBrown-wilbert Vault CO - St Cloud | Saint Cloud | MN | — | ◐ LIKELY ACTIVE |
| BBBTS-02 Blue Mound | Fort Worth | TX | 1–19 | ◐ LIKELY ACTIVE |
| BRBuckeye Ready Mix - Plant 14 | Marion | OH | — | ◐ LIKELY ACTIVE |
| BLBuckman Laboratories Inc Memphis | Memphis | TN | 20–99 | ◐ LIKELY ACTIVE |
| BRBudget Ready Mix | Houston | TX | — | ◐ LIKELY ACTIVE |
| BCBuilder's Choice Concrete | Saint Joseph | MO | — | ◐ LIKELY ACTIVE |
| BCBuilders Concrete/Ashlan | Fresno | CA | 20–99 | ◐ LIKELY ACTIVE |
| BCBuilders Concrete & Supply INC. | Newton | KS | 20–99 | ◐ LIKELY ACTIVE |
| BMBurdick Materials Vernal Ready Mix | Vernal | UT | — | ◐ LIKELY ACTIVE |
| BIBURNCO - Irving TX | Dallas | TX | 20–99 | ◐ LIKELY ACTIVE |
| BQBussen Quarries Incorporated | Saint Louis | MO | — | ◐ LIKELY ACTIVE |
| BUBuzzi Unicem Ready Mix Llc, Dba Memphis Ready Mix | Horn Lake | MS | — | ◐ LIKELY ACTIVE |
| BUBuzzi Unicem USA - Bonner Springs | Bonner Springs | KS | — | ◐ LIKELY ACTIVE |
| BPBWIP Pavestone | Hagerstown | MD | 20–99 | ◐ LIKELY ACTIVE |
| CCCaddick Construction CO INC | Fort Washington | PA | — | ◐ LIKELY ACTIVE |
| CMCadman Materials INC | Everett | WA | — | ◐ LIKELY ACTIVE |
| CQCAE Quikrete | West Columbia | SC | 20–99 | ◐ LIKELY ACTIVE |
Calgon Carbon - Columbus | Columbus | OH | 20–99 | ◐ LIKELY ACTIVE |
Calgon Carbon CORP | Catlettsburg | KY | 100–499 | ◐ LIKELY ACTIVE |
| CPCambridge Pavers South Amboy | South Amboy | NJ | 100–499 | ◐ LIKELY ACTIVE |
| CCCammco Casting Division | Anniston | AL | — | ◐ LIKELY ACTIVE |
| CPCanoga Park | Canoga Park | CA | 1–19 | ◐ LIKELY ACTIVE |
| CPCapital Precast | San Marcos | TX | 100–499 | ◐ LIKELY ACTIVE |
| CPCaprock Precast, LLC | Lavon | TX | 100–499 | ◐ LIKELY ACTIVE |
Carbon Activated Corporation- 250 | Compton | CA | 20–99 | ◐ LIKELY ACTIVE |
| CRCarbon Rivers Western Avenue Site | Knoxville | TN | — | ◐ LIKELY ACTIVE |
| CICargill, Inc.-salt Division | White Marsh | MD | — | ◐ LIKELY ACTIVE |
| CSCargill Salt Tampa | Tampa | FL | 20–99 | ◐ LIKELY ACTIVE |
| CSCarolina Sunrock Corporation | Butner | NC | — | ◐ LIKELY ACTIVE |
| CBCarr Bros.,inc. | Walton Hills | OH | — | ◐ LIKELY ACTIVE |
| CGCasa Grande Plant | Casa Grande | AZ | 500+ | ◐ LIKELY ACTIVE |
| CGCasa Grande South Plant | Casa Grande | AZ | — | ◐ LIKELY ACTIVE |
| CPCastroville Plant | San Antonio | TX | — | ◐ LIKELY ACTIVE |
| CNCbp No 2 Weatherford | Weatherford | TX | — | ◐ LIKELY ACTIVE |
| CNCbp No 3 | Venus | TX | — | ◐ LIKELY ACTIVE |
| CNCbp No 4 | Ponder | TX | — | ◐ LIKELY ACTIVE |
| CCCemex Construction Materials | Indiantown | FL | — | ◐ LIKELY ACTIVE |
| CCCemex Construction Materials Florida LLC | Titusville | FL | — | ◐ LIKELY ACTIVE |
| CCCemex Construction Materials Florida LLC | Lecanto | FL | — | ◐ LIKELY ACTIVE |
| CCCemex Construction Materials Florida LLC | Lake Worth | FL | — | ◐ LIKELY ACTIVE |
| CCCemex Construction Materials Florida LLC | Gainesville | FL | — | ◐ LIKELY ACTIVE |
| CCCemex Construction Materials Florida LLC | Tavernier | FL | — | ◐ LIKELY ACTIVE |
| CCCemex Construction Materials Florida LLC | Belle Glade | FL | — | ◐ LIKELY ACTIVE |
| CCCemex Construction Materials Florida, Llc/jahna Ranch | Davenport | FL | — | ◐ LIKELY ACTIVE |
| CCCemex Construction Materials Florida, LLC / Odessa Facility | Odessa | FL | — | ◐ LIKELY ACTIVE |
| CLCemex LLC - 56th Street Cbp | Hillsborough | FL | — | ◐ LIKELY ACTIVE |
| CLCemex LLC - Cobb Rd Cbp | Brooksville | FL | — | ◐ LIKELY ACTIVE |
| CLCemex LLC - Moore Haven | Moore Haven | FL | — | ◐ LIKELY ACTIVE |
| CLCemex LLC - Ocala West Plant | Ocala | FL | — | ◐ LIKELY ACTIVE |
| CLCemex LLC - Oldsmar Cbp | Oldsmar | FL | — | ◐ LIKELY ACTIVE |
| CLCemex LLC - Sunrise/fort Lauderdale | Fort Lauderdale | FL | — | ◐ LIKELY ACTIVE |
| CRCemex - Ready Mix Usa, Llc: Arley - 5168 | Arley | AL | — | ◐ LIKELY ACTIVE |
| CRCemex - Ready Mix Usa, Llc: Huntsville - 5167 | Huntsville | AL | — | ◐ LIKELY ACTIVE |
| CSCemex Southeast, LLC | Montgomery | AL | — | ◐ LIKELY ACTIVE |
| CCCentral Concrete Supermix - Perrine | Miami | FL | — | ◐ LIKELY ACTIVE |
| CICentral Iowa Ready Mix | Des Moines | IA | 20–99 | ◐ LIKELY ACTIVE |
| CICentral Iowa Ready Mix-Ames | Ames | IA | 1–19 | ◐ LIKELY ACTIVE |
| CRCentral Ready Mix Concrete LLC | Unknown | KY | — | ◐ LIKELY ACTIVE |
| CRCentral Ready Mix INC | Winchester | KY | — | ◐ LIKELY ACTIVE |
| CRCentral Redi Mix Concrete | Meherrin | VA | — | ◐ LIKELY ACTIVE |
| CSCentral Supply Company of West Virginia - Westover Plant | Westover | WV | — | ◐ LIKELY ACTIVE |
| CGCentury Group INC | Sulphur | LA | 20–99 | ◐ LIKELY ACTIVE |
| CPCf Poeppelman INC. | Bradford | OH | — | ◐ LIKELY ACTIVE |
| CRChampion Ready Mix | Troy | MO | — | ◐ LIKELY ACTIVE |
| CCChandler Concrete Company INC - Christiansburg | Christiansburg | VA | — | ◐ LIKELY ACTIVE |
| CCChandler Concrete Company INC - Dublin | Dublin | VA | — | ◐ LIKELY ACTIVE |
| CCChandler Concrete Company INC - Roanoke | Roanoke | VA | — | ◐ LIKELY ACTIVE |
| CCChandler Concrete - Plant 702 | Salem | VA | — | ◐ LIKELY ACTIVE |
| CEChaney Enterprises - Cloverdale Va Rmc | Cloverdale | VA | — | ◐ LIKELY ACTIVE |
| CEChaney Enterprises - Cloverdale Va Rmc | Cloverdale | VA | — | ◐ LIKELY ACTIVE |
| CEChaney Enterprises - Leesburg Rmc Facility | Leesburg | VA | — | ◐ LIKELY ACTIVE |
| CEChaney Enterprises LP - Amelia Courthouse Plant | Amelia Court House | VA | — | ◐ LIKELY ACTIVE |
| CEChaney Enterprises LP - Broadway | Broadway | VA | — | ◐ LIKELY ACTIVE |
| CEChaney Enterprises LP - Onley | Onley | VA | — | ◐ LIKELY ACTIVE |
| CEChaney Enterprises - Pearisburg Va Rmc | Pearisburg | VA | — | ◐ LIKELY ACTIVE |
| CEChaney Enterprises - Rocky Gap | Rocky Gap | VA | — | ◐ LIKELY ACTIVE |
| CMChaney Materials - Gainesville | Gainesville | VA | — | ◐ LIKELY ACTIVE |
| CFCharleston Farrier | Charleston | IL | 1–19 | ◐ LIKELY ACTIVE |
| CPChase Products CO | Broadview | IL | — | ◐ LIKELY ACTIVE |
| CSChemeon Surface Technology, LLC | Minden | NV | — | ◐ LIKELY ACTIVE |