| OROzinga Ready-mix Burlington | Burlington | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete Beloit | Beloit | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete Hartland | Hartland | — | ◇ UNVERIFIED |
| OROzinga Ready Mix Concrete, INC. | Milwaukee | — | ◇ UNVERIFIED |
| PSPaul's Silo Service, LLC | Stevens Point | — | ◇ UNVERIFIED |
| PAPgw Auto Glass, LLC | Madison | — | ◇ UNVERIFIED |
| PPPiranha Proppant - Wash Plant | Dovre | — | ◇ UNVERIFIED |
| QIQuality Insulators, INC. | Green Bay | — | ◇ UNVERIFIED |
| QBQuanex Building Products | Rice Lake | — | ◇ UNVERIFIED |
| QRQuartz Right LLC | Fond Du Lac | — | ◇ UNVERIFIED |
| RPRev's Pre-Cast Concrete Corp. | Waukesha | — | ◇ UNVERIFIED |
| RSRivard Stone, INC | Houlton | — | ◇ UNVERIFIED |
| RRRivcrete Ready Mix, LLC | Milwaukee | — | ◇ UNVERIFIED |
| RGRK Group, LLC | Slinger | — | ◇ UNVERIFIED |
| SSSilvermine Stone Company | Eau Claire | — | ◇ UNVERIFIED |
| SRSonag Ready Mix | Menomonee Falls | — | ◇ UNVERIFIED |
| SISpancrete Industries, INC. | Menomonee Falls | — | ◇ UNVERIFIED |
| SISpancrete Industries - Valders | Valders | — | ◇ UNVERIFIED |
| SISpancrete Industries - Waukesha | Waukesha | — | ◇ UNVERIFIED |
| SGSpecialty Granules LLC | Pembine | — | ◇ UNVERIFIED |
| SCStone Creations LLC | Shawano | — | ◇ UNVERIFIED |
| SCStone Creations LLC | Shawano | — | ◇ UNVERIFIED |
| SOStudio One Art Glass INC | South Milwaukee | — | ◇ UNVERIFIED |
| SGSummit Granite USA LLC | West Allis | — | ◇ UNVERIFIED |
| SCSurface Creations of Wisconsin, Inc. | Appleton | — | ◇ UNVERIFIED |
| TSThelen Sand and Gravel-genoa City Plant | Genoa City | — | ◇ UNVERIFIED |
| TLThe Lurie Companies, INC. | Milwaukee | — | ◇ UNVERIFIED |
| TIThermoset INC | Mequon | — | ◇ UNVERIFIED |
| TJThermoset - Jackson Facility | Jackson | — | ◇ UNVERIFIED |
| TSTrend Stone Surfaces LLC | Eau Claire | — | ◇ UNVERIFIED |
| VCVanDerVart Concrete Products, LLC | Sheboygan | — | ◇ UNVERIFIED |
| VCVanDerVart Concrete Products, LLC | Sheboygan | — | ◇ UNVERIFIED |
| WTWausau Tile INC | Wausau | — | ◇ UNVERIFIED |
| WRWingra Redi Mix | Waunakee | — | ◇ UNVERIFIED |
| WGWisconsin Granite Depot, LLC | Oak Creek | — | ◇ UNVERIFIED |
| WGWisconsin Granite Design LLC | Oak Creek | — | ◇ UNVERIFIED |
| WGWisconsin Granite LLC | Mcfarland | — | ◇ UNVERIFIED |
| WSWisconsin Silos INC | Plover | — | ◇ UNVERIFIED |
