| CPCherry Precast | Rural Hall | NC | — | ◇ UNVERIFIED |
| CBChester Bross Construction CO. | Van Buren | MO | — | ◇ UNVERIFIED |
| CBChickasha Batch Plant | Chickasha | OK | — | ◇ UNVERIFIED |
| CCChilders Concrete Company | High Point | NC | — | ◇ UNVERIFIED |
| CCChildress Concrete | Lewisburg | TN | — | ◇ UNVERIFIED |
| CVChilds Vault Company | Anderson | SC | — | ◇ UNVERIFIED |
| CRChillicothe Ready Mix | Chillicothe | MO | — | ◇ UNVERIFIED |
| CMChilo Manufacturing & Plating Company | Chicago | IL | — | ◇ UNVERIFIED |
| CCChristian County Concrete | Nixa | MO | — | ◇ UNVERIFIED |
| CVChristy Vault Company Tulare | Tulare | CA | — | ◇ UNVERIFIED |
| CPChromalloy Pacific Gas Turbine Center | San Diego | CA | — | ◇ UNVERIFIED |
| CIChryso, INC. | Denver | CO | — | ◇ UNVERIFIED |
| CIChryso, INC. | Royse City | TX | — | ◇ UNVERIFIED |
| CMCic - Madison | Lee | FL | — | ◇ UNVERIFIED |
| CWCity Wide Construction Products, INC. | Ozark | MO | — | ◇ UNVERIFIED |
| CHC.j. Horner Company - Nashville Plant | Nashville | AR | — | ◇ UNVERIFIED |
| CJC J R Processing CO | Des Plaines | IL | — | ◇ UNVERIFIED |
| CMClaire Manufacturing | Addison | IL | — | ◇ UNVERIFIED |
| COClariant Oil Services | Clinton | OK | — | ◇ UNVERIFIED |
| CCClarkson Const. (rex #6209) (portable)(air) | Portable | KS | — | ◇ UNVERIFIED |
| CCClarkson Construction Co-kansas City (87th Street) | Kansas City | MO | — | ◇ UNVERIFIED |
| CMClarksville Mobile Mix and Materials LLC | Clarksville | TN | — | ◇ UNVERIFIED |
| CCClassic Cast | Freeport | FL | — | ◇ UNVERIFIED |
| CMClassic Marble CO | Nettie | WV | — | ◇ UNVERIFIED |
| CCClawson Concrete Company | Sterling Heights | MI | — | ◇ UNVERIFIED |
| CBClayton Block CO INC | Edison | NJ | — | ◇ UNVERIFIED |
| CLC L Benton & Sons INC | Myrtle Beach | SC | — | ◇ UNVERIFIED |
| CPClean Planet, INC. | Stockton | CA | — | ◇ UNVERIFIED |
| CAClear and Clean Pool Service | Deerfield Beach | FL | — | ◇ UNVERIFIED |
| CLClear Lake Lava Dba Williams Redi Mix INC. | Williams | CA | — | ◇ UNVERIFIED |
| CCClearwater, City of - Master Reuse System | Clearwater | FL | — | ◇ UNVERIFIED |
| CCClearwater Concrete Kooskia Facility | Kamiah | ID | — | ◇ UNVERIFIED |
| CFClemente Fane Concrete CORP | Pittsfield | MA | — | ◇ UNVERIFIED |
| CLClemente Latham Concrete | Cohoes | NY | — | ◇ UNVERIFIED |
| CLClemente Latham Glens Falls Plant | Glens Falls | NY | — | ◇ UNVERIFIED |
| CCCleveland Central Enterprises | Cleveland | OH | — | ◇ UNVERIFIED |
| CMCloud Manufacturing, LLC | Union | MO | — | ◇ UNVERIFIED |
| CNCloud Nine Enterprises | Rutledge | TN | — | ◇ UNVERIFIED |
| CPCmc Plant 1 - South Madison Plant | Wichita | KS | — | ◇ UNVERIFIED |
| CCCoastal Chemical CO LLC - Maurice Facility | Maurice | LA | — | ◇ UNVERIFIED |
| CCCoastal Concrete | Johns Island | SC | — | ◇ UNVERIFIED |
| CCCoastal Concrete:columbia | Columbia | SC | — | ◇ UNVERIFIED |
| CCCoastal Concrete Myrtle Beach | Conway | SC | — | ◇ UNVERIFIED |
| CPCoastal Pit #1 | Gloucester | VA | — | ◇ UNVERIFIED |
| CPCoastal Precast Systems, LLC | Chesapeake | VA | — | ◇ UNVERIFIED |
| CRCoastal Ready Mix Concrete CO INC. - Buxton Back Road | Buxton | NC | — | ◇ UNVERIFIED |
| CRCoastal Ready Mix Concrete Company Incorporated | Nags Head | NC | — | ◇ UNVERIFIED |
| CRCoastal Ready Mix Concrete INC. - Moyock | Moyock | NC | — | ◇ UNVERIFIED |
| CRCoastal Ready Mix, LLC | Mobile | AL | — | ◇ UNVERIFIED |
| CRCoastal Ready Mix, LLC - Mcintosh | Mc Intosh | AL | — | ◇ UNVERIFIED |
| CRCoastal Ready Mix Theodore | Theodore | AL | — | ◇ UNVERIFIED |
| CCCoast Concrete Company, LLC - Labelle | Labelle | FL | — | ◇ UNVERIFIED |
| CCCoast Concrete LLC | Biloxi | MS | — | ◇ UNVERIFIED |
| CCCoast Concrete Plant | Ellenton | FL | — | ◇ UNVERIFIED |
| CWCoast Wide Ready Mix CO. | Tillamook | OR | — | ◇ UNVERIFIED |
| CSCoated Sand Solutions LLC | Rochelle | IL | — | ◇ UNVERIFIED |
| CRCohron Ready Mix-council Bluffs | Council Bluffs | IA | — | ◇ UNVERIFIED |
| CCCoker Concrete | Dover | DE | — | ◇ UNVERIFIED |
| CIColaska INC Dba University Redi Mix (twin Rich) | North Pole | AK | — | ◇ UNVERIFIED |
| CTColleton Tile & Concrete Company INC | Walterboro | SC | — | ◇ UNVERIFIED |
| CCColonial Chemical Solutions INC | Savannah | GA | — | ◇ UNVERIFIED |
| CCColonial Concrete - Falmouth | Falmouth | VA | — | ◇ UNVERIFIED |
| CRColorado River Concrete | Alvarado | TX | — | ◇ UNVERIFIED |
| CColorcraft | Somerset | NJ | — | ◇ UNVERIFIED |
| CCColumbia County Concrete CO INC | Williston | SC | — | ◇ UNVERIFIED |
| CPColumbia Precast, LLC | Columbia | TN | — | ◇ UNVERIFIED |
| CCColumbus Chemical Inds INC | Phoenix | AZ | — | ◇ UNVERIFIED |
| CCColumbus Chemical Industries INC | Phoenix | AZ | — | ◇ UNVERIFIED |
| CMCommercial Merchandising Corporation | Charlotte | NC | — | ◇ UNVERIFIED |
| CRCommercial Ready Mix Concrete - Edenton | Edenton | NC | — | ◇ UNVERIFIED |
| CRCommercial Ready Mix - Gordonsville | Fredericksburg | VA | — | ◇ UNVERIFIED |
| CRCommercial Ready Mix Products INC - Elizabeth City | Elizabeth City | NC | — | ◇ UNVERIFIED |
| CRCommercial Ready Mix Products INC - Portable 52469 | Freeman | VA | — | ◇ UNVERIFIED |
| CRCommercial Ready Mix Products INC - Portable 61860 | Suffolk | VA | — | ◇ UNVERIFIED |
| CRCommerical Ready Mix Products | Ahoskie | NC | — | ◇ UNVERIFIED |
| CPCommodore Plastics, LLC | Bloomfield | NY | — | ◇ UNVERIFIED |
| CMCompass Minerals | Duluth | MN | — | ◇ UNVERIFIED |
| CPComplete Packaging Solutions LLC | Syracuse | NY | — | ◇ UNVERIFIED |
| CBCon-agg Boone Quarries | Columbia | MO | — | ◇ UNVERIFIED |
| CRConcordia Ready-mix | Concordia | KS | — | ◇ UNVERIFIED |
| CBConcrete Batch Plant 1 | Cedar Hill | TX | — | ◇ UNVERIFIED |
| CBConcrete Batch Plant, Gcp5-9545 | Taos | NM | — | ◇ UNVERIFIED |
| CCConcrete Chemicals | San Carlos | CA | — | ◇ UNVERIFIED |
| CCConcrete Concepts of Tennessee | Powell | TN | — | ◇ UNVERIFIED |
| CCConcrete CO of Springfield- Republic | Republic | MO | — | ◇ UNVERIFIED |
| CCConcrete CO of the Ozarks- Branson East | Hollister | MO | — | ◇ UNVERIFIED |
| CDConcrete Dakota Redi Mix INC. | Watertown | SD | — | ◇ UNVERIFIED |
| CEConcrete Enterprises | Hutchinson | KS | — | ◇ UNVERIFIED |
| CEConcrete Enterprises - Kingman | Kingman | KS | — | ◇ UNVERIFIED |
| CIConcrete INC | Stockton | CA | — | ◇ UNVERIFIED |
| CIConcrete INC - Gifford | Union | IA | — | ◇ UNVERIFIED |
| CMConcrete Materials CORP | Danville | KY | — | ◇ UNVERIFIED |
| CMConcrete Materials Portable | No City Name | NE | — | ◇ UNVERIFIED |
| CMConcrete Mobility LLC Portable | No City Name | NE | — | ◇ UNVERIFIED |
| CNConcrete Norwest Getchell Pit | Lake Stevens | WA | — | ◇ UNVERIFIED |
| CPConcrete Placing CO INC 00099 | Boise | ID | — | ◇ UNVERIFIED |
| CPConcrete Precast Systems INC - Chesapeake | Chesapeake | VA | — | ◇ UNVERIFIED |
| CPConcrete Products INC | Middlesboro | KY | — | ◇ UNVERIFIED |
| CRConcrete Resources Inc-wentzville | Wentzville | MO | — | ◇ UNVERIFIED |
| CSConcrete Service - Clinton | Clinton | NC | — | ◇ UNVERIFIED |