| IMIrving Materials INC Kinser Pike Plt | Bloomington | — | ◐ LIKELY ACTIVE |
| MMMeyer Material CO Middlebury Ready Mix Plant | Middlebury | — | ◐ LIKELY ACTIVE |
| MMMeyer Material CO Warsaw Ready Mix Plant | Warsaw | — | ◐ LIKELY ACTIVE |
| MCMilestone Contractors, L.p. | New Haven | — | ◐ LIKELY ACTIVE |
| MRMintek Resources Incorporated | Indianapolis | — | ◐ LIKELY ACTIVE |
| OROzinga Ready-mix Concrete - Bremen | Bremen | — | ◐ LIKELY ACTIVE |
| OROzinga Ready-mix Concrete - Elkhart E | Elkhart | — | ◐ LIKELY ACTIVE |
| OROzinga Ready-mix Concrete - Gary | Gary | — | ◐ LIKELY ACTIVE |
| OROzinga Ready Mix Concrete INC. - South Bend | South Bend | — | ◐ LIKELY ACTIVE |
| OROzinga Ready-mix Concrete Plymouth | Plymouth | — | ◐ LIKELY ACTIVE |
| OROzinga Ready-mix Concrete-wheatfield | Wheatfield | — | ◐ LIKELY ACTIVE |
| OROzinga Ready-mix Goshen | Goshen | — | ◐ LIKELY ACTIVE |
| QIQuikrete - Indianapolis, in Plant | Indianapolis | — | ◐ LIKELY ACTIVE |
| RGRinker Greenfield Pipe | Greenfield | — | ◐ LIKELY ACTIVE |
| RMRinker Materials Concrete Pipe Division | Whitestown | — | ◐ LIKELY ACTIVE |
| SMShelby Materials Incorporated | Nashville | — | ◐ LIKELY ACTIVE |
| SSSouth Shore Slag LLC - Contractor of Uss Gary Works (00121) | Gary | — | ◐ LIKELY ACTIVE |
| SHSt Henry Tile CO INC Dba Keystone Concrete | Churubusco | — | ◐ LIKELY ACTIVE |
| 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 |
| CCCash Concrete Products Plant 1 | Greencastle | — | ◇ UNVERIFIED |
| CCCash Concrete Russellville Plant | Russellville | — | ◇ UNVERIFIED |
| CPCimbar Performance Minerals | Mount Vernon | — | ◇ UNVERIFIED |
| CBColonial Brick Corporation | Cayuga | — | ◇ UNVERIFIED |
| CHColumbian Home Products, LLC | Terre Haute | — | ◇ UNVERIFIED |
| CMCore Metals Group LLC (mpm Facility) | Aurora | — | ◇ UNVERIFIED |
| EMEdge Materials LLC | Cloverdale | — | ◇ UNVERIFIED |
| FMFewell Monument - Production Facility | Scottsburg | — | ◇ UNVERIFIED |
| GAGuardian Automotive Products Incorporated | Auburn | — | ◇ UNVERIFIED |
| HRHarsco - Reed Minerals Division | Gary | — | ◇ UNVERIFIED |
| HHHi Hill Ready Mix Company | Seymour | — | ◇ UNVERIFIED |
| IGIndiana Glass Company, INC. | Dunkirk | — | ◇ UNVERIFIED |
| ILIndiana Limestone Supply Incorporated | Spencer | — | ◇ UNVERIFIED |
| IMIrving Materials INC | Salem | — | ◇ UNVERIFIED |
| IMIrving Materials INC Bloomfield | Bloomfield | — | ◇ UNVERIFIED |
| IMIrving Materials INC Danville | Danville | — | ◇ UNVERIFIED |
| IMIrving Materials Incorporated | Brazil | — | ◇ UNVERIFIED |
| IMIrving Materials INC Remington | Remington | — | ◇ UNVERIFIED |
| JSJones & Sons Bloomfield | Bloomfield | — | ◇ UNVERIFIED |
| KIKeramos INC | Indianapolis | — | ◇ UNVERIFIED |
| LCLippert Components INC. Plant 119 | Bristol | — | ◇ UNVERIFIED |
| MIMenard Incorporated | Terre Haute | — | ◇ UNVERIFIED |
| NANorth American Refractories (narco) | Gary | — | ◇ UNVERIFIED |
| NBNorthfield Block Company | Indianapolis | — | ◇ UNVERIFIED |
| OCOzinga Cement Incorporated Contractor of Cleveland-cliffs Bu | Burns Harbor | — | ◇ UNVERIFIED |
| PSPhoenix Services LLC | Chesterton | — | ◇ UNVERIFIED |