| MCMpl CORP | Fairland | IN | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MCMulzer Crushed Stone Incorporated Dba Central Concrete & Supply | Jasper | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| NPNsg - Pilkington | Shelbyville | IN | Nonmetallic Mineral Product Manufacturing327211 | — | ◇ UNVERIFIED |
| OEOmega Enterprises, INC. | Winchester | IN | Nonmetallic Mineral Product Manufacturing327213 | — | ◇ UNVERIFIED |
| OTOn the Rox LLC | Fort Wayne | IN | Nonmetallic Mineral Product Manufacturing327213 | — | ◇ UNVERIFIED |
| OIOwens - Illinois | Lapel | IN | Nonmetallic Mineral Product Manufacturing327213 | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete - Laporte | La Porte | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OROzinga Ready-mix New Carlisle | New Carlisle | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OSOzinga Slag LLC | East Chicago | IN | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| PGPittsburgh Glass Works | Evansville | IN | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| PGPrairie Group INC | Noblesville | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PGPrecision Glass, LLC | Fort Wayne | IN | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| PRPreferred Readymix Concrete & Supply, LLC | New Paris | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PIPyrotek Incorporated | Columbia City | IN | Nonmetallic Mineral Product Manufacturing327212 | — | ◇ UNVERIFIED |
| RCRieth-riley Construction Co, INC | Mishawaka | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RIRinker Indianapolis Pipe | Indianapolis | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RRRubicon Refractories Inc | Hammond | IN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| RWR Wood Properties LLC | Mishawaka | IN | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| SHSaint Henry Tile CO INC Dba Berne Ready Mix | Berne | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SGSinclair Glass | Hartford City | IN | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix Concrete LLC Plant # 204 | Jeffersonville | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix Plant 243 | Clayton | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix Plants 242/290 | Daleville | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SBSpectrum Brands - Global Pet Care | Noblesville | IN | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| SRSpeedway Redi Mix Incorporated | Garrett | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| STSpeedway Transit Mix | Angola | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| STSpeedway Transit Mix and Concrete Plant Management Incorporated | New Haven | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SMSpurlino Materials of Indianapolis LLC | Indianapolis | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SCSrm Concrete - 26023a/b | Indianapolis | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SCSrm Concrete - 26039 Fishers | Fishers | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SCSrm Concrete - 26050 - Whitestown | Whitestown | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SHSt Henry Tile CO INC Dba Keystone Concrete | Churubusco | IN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| TFTest Facility 69 Revised | Fort Wayne | IN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| TSThermal Structures INC | Plainfield | IN | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| TMThomas Monuments, Inc. | Indianapolis | IN | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| URUnited Refractories Incorporated | Saint Leon | IN | Nonmetallic Mineral Product Manufacturing327125 | — | ◇ UNVERIFIED |
| UGUS Gypsum Company | Shoals | IN | Nonmetallic Mineral Product Manufacturing327420 | — | ◇ UNVERIFIED |
| VNValmont Newmark Incorporated | Bristol | IN | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| VUVesuvius USA | Crown Point | IN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| WMWhitesville Mill Service CO | Crawfordsville | IN | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| WCWillard C Thorn | Salem | IN | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
