| DCDelaware City Refining CO LLC | Delaware City | 500+ | ● ACTIVE |
 Justice Sealcoating LLC | Frankford | — | ● ACTIVE |
| VRVp Racing Fuels | Newark | — | ◇ UNVERIFIED |
| AMAllan Myers De, INC. Wilmington | Wilmington | — | ◐ LIKELY ACTIVE |
| DMDiamond Materials LLC | Wilmington | — | ◐ LIKELY ACTIVE |
| RARiver Asphalt | Dagsboro | — | ◐ LIKELY ACTIVE |
| RIRiver Ii LLC | Delmar | — | ◐ LIKELY ACTIVE |
| SLSolenis, LLC | Wilmington | — | ◐ LIKELY ACTIVE |
| GIGardner-gibson INC. | Seaford | — | ◐ LIKELY ACTIVE |
| IPIko Production Wilmington INC. | Wilmington | — | ◐ LIKELY ACTIVE |
| ICIndependence Construction Materials (icm | Georgetown | — | ◐ LIKELY ACTIVE |
| IPInternational Petroleum CORP | Wilmington | — | ◐ LIKELY ACTIVE |
| TGThink Green Delaware, INC | Wilmington | — | ◐ LIKELY ACTIVE |
| AMAllan Myers, Delaware, INC - Dover | Dover | — | ◇ UNVERIFIED |
| CMChristiana Materials | Christiana | — | ◇ UNVERIFIED |
| CMContractors Materials LLC - Heald Street | Wilmington | — | ◇ UNVERIFIED |
| CCCorrado Construction CO LLC | New Castle | — | ◇ UNVERIFIED |
| EMEdgemoor Materials INC | Wilmington | — | ◇ UNVERIFIED |
| FMFarmington Materials, LLC | Greenwood | — | ◇ UNVERIFIED |
| GSGac Seaford INC | Seaford | — | ◇ UNVERIFIED |
| ICIndependence Const Materials, Cheswold | Cheswold | — | ◇ UNVERIFIED |
| TDTilcon Delaware Gumboro | Frankford | — | ◇ UNVERIFIED |
| TDTilcon Delaware, INC. - Terminal Avenue | New Castle | — | ◇ UNVERIFIED |
| TMTri-county Materials | Dover | — | ◇ UNVERIFIED |
| AMAllan Myers Delaware, INC. - Bay Road | Dover | — | ◇ UNVERIFIED |
| CMContractors Materials LLC Hot Mix Plt | New Castle | — | ◇ UNVERIFIED |
| DADavid a Bramble | Seaford | — | ◇ UNVERIFIED |
| GSGac Seaford INC | Seaford | — | ◇ UNVERIFIED |
| RSRussell Standard Seaford | Seaford | — | ◇ UNVERIFIED |
| TDTilcon Delaware - Horsepond Road | Dover | — | ◇ UNVERIFIED |
| WSWalan Specialty Construction Products, LLC | Wilmington | — | ◇ UNVERIFIED |
