| CHCollimated Holes, INC. | Campbell | CA | — | ● ACTIVE |
Colorado Quartz Company | Colorado Springs | CO | — | ● ACTIVE |
| CMColumbus Marble Works, INC. | Columbus | MS | 20–99 | ● ACTIVE |
| CMConcrete Materials INC | Merriam | KS | 20–99 | ● ACTIVE |
| CRConcrete Ready Mix, INC | San Jose | CA | 20–99 | ● ACTIVE |
Connecticut Precast Corporation | Monroe | CT | — | ● ACTIVE |
| CEConn Equipment Rental Co, INC | Sylacauga | AL | — | ● ACTIVE |
Cowtown Redi Mix, INC. | Fort Worth | TX | — | ● ACTIVE |
Cromwell Concrete Products, Incorporated | Cromwell | CT | — | ● ACTIVE |
Crystal Imagery, INC | York Springs | PA | — | ● ACTIVE |
Csa Materials, INC. | San Angelo | TX | 20–99 | ● ACTIVE |
| CGCustom Glass Solutions Upper Sandusky, LLC | Upper Sandusky | OH | 100–499 | ● ACTIVE |
Davlin Coatings LLC | Berkeley | CA | — | ● ACTIVE |
Deco West INC | Las Vegas | NV | — | ● ACTIVE |
Denver Industrial Sales & Service CO INC | Denver | CO | — | ● ACTIVE |
Dynasil Corporation of America | West Berlin | NJ | — | ● ACTIVE |
Elan Technology, INC. | Midway | GA | — | ● ACTIVE |
Electro Switch CORP. | Weymouth | MA | — | ● ACTIVE |
Ellensburg Cement Products INC | Ellensburg | WA | — | ● ACTIVE |
Engel & Gray, INC | Santa Maria | CA | — | ● ACTIVE |
Eric Powell LLC | Brooklyn | NY | — | ● ACTIVE |
Fbn New Jersey Manufacturing, INC. | Mountain Lakes | NJ | 1–19 | ● ACTIVE |
F & F Concrete Corporation, the | Plantsville | CT | — | ● ACTIVE |
| FOFlexicore of Texas | Houston | TX | 20–99 | ● ACTIVE |
Gainey's Concrete Products, LLC | Holden | LA | — | ● ACTIVE |
Geiger Ready Mix CO INC | Leavenworth | KS | — | ● ACTIVE |
Granite Division, INC | Tyler | TX | — | ● ACTIVE |
| GLGreat Lakes Vault & Precast Girard | Girard | PA | 1–19 | ● ACTIVE |
Gulf Concrete Technology LLC | Long Beach | MS | — | ● ACTIVE |
H2 Pre-cast, INC | E Wenatchee | WA | — | ● ACTIVE |
Heartland Asphalt, INC | Mason City | IA | — | ● ACTIVE |
Heavy Materials LLC | Saint Thomas | VI | — | ● ACTIVE |
Hopkins Sand & Gravel, INC. | Webster | WI | 20–99 | ● ACTIVE |
| ISIko Southeast, INC | Sylacauga | AL | 100–499 | ● ACTIVE |
Incom, INC. | Charlton | MA | — | ● ACTIVE |
Infinite Optics INC. | Santa Ana | CA | — | ● ACTIVE |
Ion Optics INC | Albany | NY | — | ● ACTIVE |
Island Ready-mix Concrete INC | Kapolei | HI | — | ● ACTIVE |
Jarrett Concrete Products and Supply, INC. | Ashland City | TN | — | ● ACTIVE |
Jones Brothers Marine Manufacturing, INC. | Morehead City | NC | — | ● ACTIVE |
| KLKenneth Lynch & Sons, Incorporated | Oxford | CT | — | ● ACTIVE |
| KIKie-con INC | Antioch | CA | 20–99 | ● ACTIVE |
Kilgore Companies, LLC | Salt Lake City | UT | — | ● ACTIVE |
| LCLaney Construction Materials, LLC | Woodbine | MD | 1–19 | ● ACTIVE |
| LELattice Electro Optics, INC. | Fullerton | CA | — | ● ACTIVE |
Lebanon Ready Mix, INC. | Lebanon | MO | — | ● ACTIVE |
Los Alamos Transit Mix LLC | Los Alamos | NM | 1–19 | ● ACTIVE |
Mac Thin Films, INC. | Santa Rosa | CA | — | ● ACTIVE |
Malta Ready Mix Incorporated | Malta | MT | — | ● ACTIVE |
| MAMat Asphalt LLC | Chicago | IL | 1–19 | ● ACTIVE |
Materials INC | Bernalillo | NM | — | ● ACTIVE |
| MBM & B Asphalt CO INC | Tiffin | OH | 20–99 | ● ACTIVE |
Mccann Concrete Products INC | Dorsey | IL | — | ● ACTIVE |
Meva Formwork Systems INC | Springfield | OH | — | ● ACTIVE |
Midcon Products INC | Hortonville | WI | — | ● ACTIVE |
Miles Sand & Gravel Company | Puyallup | WA | — | ● ACTIVE |
Mindrum Precision INC. | Rancho Cucamonga | CA | — | ● ACTIVE |
Modern Concrete & Materials LLC | Beaumont | TX | 100–499 | ● ACTIVE |
Monument Warehouse LLC | Elberton | GA | — | ● ACTIVE |
Mo Sci LLC | Rolla | MO | 20–99 | ● ACTIVE |
Norwalk Concrete Industries INC | Norwalk | OH | — | ● ACTIVE |
| OLOpco Laboratory, INC | Fitchburg | MA | — | ● ACTIVE |
Oran Safety Glass INC | Emporia | VA | — | ● ACTIVE |
Outback INC | Fresno | CA | 100–499 | ● ACTIVE |
Outdoor Creations, INC. | Anderson | CA | 20–99 | ● ACTIVE |
Ozinga On-site INC | Mokena | IL | 100–499 | ● ACTIVE |
Palmetto Vermiculite, INC. | Woodruff | SC | — | ● ACTIVE |
| PCPeterson Concrete Tank Company, INC. | North Little Rock | AR | 20–99 | ● ACTIVE |
P J R Industries, INC | Buffalo | NY | — | ● ACTIVE |
| PGPlymouth Grating Laboratory, INC. | Carver | MA | — | ● ACTIVE |
Precision Electronic Glass, INC. | Vineland | NJ | — | ● ACTIVE |
Rayotek Scientific, LLC | San Diego | CA | — | ● ACTIVE |
| RMReed Minerals, LLC | Gary | IN | 1–19 | ● ACTIVE |
| RMReed Minerals, LLC | Camp Hill | PA | 20–99 | ● ACTIVE |
Reynolds Asphalt & Construction Company | North Richland Hills | TX | 100–499 | ● ACTIVE |
Rock of Ages Corporation | Graniteville | VT | 20–99 | ● ACTIVE |
Schott Pharma Usa, INC. | Lebanon | PA | 100–499 | ● ACTIVE |
Schwartz Redi-mix INC | Bovey | MN | 20–99 | ● ACTIVE |
Sierra Precision Optics INC | Auburn | CA | — | ● ACTIVE |
Smith-midland Corporation | Midland | VA | — | ● ACTIVE |
Smokey Mountain Tops, INC. | Knoxville | TN | — | ● ACTIVE |
| SCSouthern Concrete Materials-waynesville Plant | Waynesville | NC | 20–99 | ● ACTIVE |
Spec Formliners, INC. | Santa Ana | CA | 20–99 | ● ACTIVE |
| SSSpectrum Scientific Incorporated | Irvine | CA | — | ● ACTIVE |
Standridge Granite CORP | Santa Fe Springs | CA | — | ● ACTIVE |
St Louis Prestress INC | Glen Carbon | IL | — | ● ACTIVE |
Stone Link Marble & Granite CORP | Worcester | MA | — | ● ACTIVE |
Superior Asphalt, INC | Byram | MS | 20–99 | ● ACTIVE |
Superior Asphalt, INC | Bradenton | FL | — | ● ACTIVE |
| SGSuperior Graphite | Hopkinsville | KY | 20–99 | ● ACTIVE |
Swift Glass CO INC | Elmira Heights | NY | 20–99 | ● ACTIVE |
Taktl LLC | Turtle Creek | PA | — | ● ACTIVE |
| TBTamko Building Products - Phillipsburg | Phillipsburg | KS | 100–499 | ● ACTIVE |
Texset LLC | Justin | TX | — | ● ACTIVE |
| TPThomson Prestress, LLC | Jackson | TN | 20–99 | ● ACTIVE |
Treasure State Concrete INC | Polson | MT | — | ● ACTIVE |
Triton Mgo Products, LLC | Houston | TX | 20–99 | ● ACTIVE |
| UCUnited Concrete Products, INC | Yalesville | CT | 100–499 | ● ACTIVE |
United Lens Company, INC. | Southbridge | MA | — | ● ACTIVE |
Vaughn Excavating and Construction, INC. | Cheyenne | WY | — | ● ACTIVE |