| BLBrickcraft LLC | Center Point | 20–99 | ◐ LIKELY ACTIVE |
| BSBybee Stone Company | Ellettsville | 20–99 | ◐ LIKELY ACTIVE |
| CGCarlex Glass America LLC | Ligonier | — | ◐ LIKELY ACTIVE |
| CBCustom Building Products | Frankfort | — | ◐ LIKELY ACTIVE |
| ECElite Crete Systems Incorporated | Valparaiso | 20–99 | ◐ LIKELY ACTIVE |
| ECElkhart (KIK Custom Products) | Elkhart | 1–19 | ◐ LIKELY ACTIVE |
| HSHog Slat INC | Universal | — | ◐ LIKELY ACTIVE |
| ILIndiana Limestone Acquisition LLC Dba Indiana Limestone CO INC Central | Bloomington | — | ◐ LIKELY ACTIVE |
| ILIndiana Limestone Company - Empire Mill | Oolitic | 20–99 | ◐ LIKELY ACTIVE |
| ILIndiana Limestone Company Incorporated - Empire Quarry | Oolitic | — | ◐ LIKELY ACTIVE |
| JSJ Shaw Industries LLC Dba Kokomo Opalescent Glass Company | Kokomo | — | ◐ LIKELY ACTIVE |
| KIKnauf Insulation Incorporated | Shelbyville | — | ◐ LIKELY ACTIVE |
| MSMajestic Stone Imports | Indianapolis | 20–99 | ◐ LIKELY ACTIVE |
| NNoblesville | Noblesville | 20–99 | ◐ LIKELY ACTIVE |
| OTOil Technology INC | East Chicago | — | ◐ LIKELY ACTIVE |
| PNPilkington North America INC | Franklin | — | ◐ LIKELY ACTIVE |
| PNPilkington North America Incorporated | Shelbyville | 100–499 | ◐ LIKELY ACTIVE |
| PSPrestress Services Industries Decatur | Decatur | 20–99 | ◐ LIKELY ACTIVE |
| RMRinker Materials Concrete Pipe Division | Whitestown | — | ◐ LIKELY ACTIVE |
| RGRogers Group Newton County Stone | Kentland | — | ◐ LIKELY ACTIVE |
| SGStafford Gravel Incorporated | Butler | — | ◐ LIKELY ACTIVE |
| TETri Eagle LLC | Kingsford Heights | — | ◐ LIKELY ACTIVE |
| TGTrulite Glass and Aluminum Solutions | Indianapolis | 20–99 | ◐ LIKELY ACTIVE |
| UGUS Gypsum Shoals | Shoals | 100–499 | ◐ LIKELY ACTIVE |
| APAbrasive Processing & Technologies, LLC. | Fortville | — | ◐ LIKELY ACTIVE |
| EMEdge Materials LLC | Cloverdale | — | ◐ LIKELY ACTIVE |
| HMHeidelberg Materials US Cement LLC | Sellersburg | — | ◐ LIKELY ACTIVE |
| IPImi Plant 101 | Greenfield | — | ◐ LIKELY ACTIVE |
| IMIrving Materials INC Indpls Plant 5 | Indianapolis | — | ◐ LIKELY ACTIVE |
| IMIrving Materials INC Kinser Pike Plt | Bloomington | — | ◐ LIKELY ACTIVE |
| ILIsoa LLC Dba Insulation Specialties of America | Wanatah | — | ◐ LIKELY ACTIVE |
| MCMilestone Contractors, L.p. | New Haven | — | ◐ LIKELY ACTIVE |
| MRMintek Resources Incorporated | Indianapolis | — | ◐ LIKELY ACTIVE |
| SMShelby Materials Incorporated | Nashville | — | ◐ LIKELY ACTIVE |
| SSSouth Shore Slag LLC - Contractor of Uss Gary Works (00121) | Gary | — | ◐ LIKELY ACTIVE |
| AAAmerican Art Clay CO INC | Indianapolis | — | ◇ UNVERIFIED |
| AAAmerican Art Clay Company | Indianapolis | — | ◇ UNVERIFIED |
| ACAmerican Colloid Company | Troy | — | ◇ UNVERIFIED |
| AGA.p. Green Refactories INC. | Gary | — | ◇ UNVERIFIED |
| APAtmi Plant 2 | Greenfield | — | ◇ UNVERIFIED |
| AMAtwood Mobile Products, LLC | Elkhart | — | ◇ UNVERIFIED |
| BABpb America INC | Lagro | — | ◇ UNVERIFIED |
| BMButler Mill Service Company | Butler | — | ◇ UNVERIFIED |
| CICardinal Ig | Fremont | — | ◇ UNVERIFIED |
| CICarlisle Industrial Brake & Friction | Logansport | — | ◇ UNVERIFIED |
| CCCash Concrete Products Plant 1 | Greencastle | — | ◇ UNVERIFIED |
| CCCash Concrete Russellville Plant | Russellville | — | ◇ UNVERIFIED |
| CPCimbar Performance Minerals | Mount Vernon | — | ◇ UNVERIFIED |
| COCoast Oem LLC | Kokomo | — | ◇ UNVERIFIED |
| CBColonial Brick Corporation | Cayuga | — | ◇ UNVERIFIED |