| OSOkauchee - Schmitz Read Mix | Nashotah | 1–19 | ◐ LIKELY ACTIVE |
| PDPrairie du Chien | Prairie Du Chien | 500+ | ◐ LIKELY ACTIVE |
| QSQuarra Stone Company, LLC | Sun Prairie | 20–99 | ◐ LIKELY ACTIVE |
| SSSilver Spring - Schmitz Read Mix | Milwaukee | 20–99 | ◐ LIKELY ACTIVE |
| TGTrulite Glass and Aluminum Solutions, LLC | New Berlin | 20–99 | ◐ LIKELY ACTIVE |
| WCWaukesha Cnty Dot | Menomonee Falls | — | ◐ LIKELY ACTIVE |
Wieser Concrete Products, INC. | Portage | 20–99 | ◐ LIKELY ACTIVE |
| AIAlliance Industries INC - Waupaca - Vaughn Road | Waupaca | — | ◐ LIKELY ACTIVE |
| AMAmerican Materials - Eau Claire | Eau Claire | — | ◐ LIKELY ACTIVE |
| AMAmerican Materials - Menomonie | Menomonie | — | ◐ LIKELY ACTIVE |
| AGAtwater - General CORP | Menomonee Falls | 1–19 | ◐ LIKELY ACTIVE |
| BCBlast Craft Service, INC. | Slinger | 20–99 | ◐ LIKELY ACTIVE |
| CCCardinal Cg | Spring Green | — | ◐ LIKELY ACTIVE |
| CGCardinal Glass | Spring Green | — | ◐ LIKELY ACTIVE |
| CRCemstone - River Falls | River Falls | — | ◐ LIKELY ACTIVE |
| CDCrm - Dresser | Osceola | — | ◐ LIKELY ACTIVE |
| CNCrm - New Richmond | New Richmond | — | ◐ LIKELY ACTIVE |
| GRGleason Redi Mix, INC. | Kenosha | 20–99 | ◐ LIKELY ACTIVE |
| GWGraymont Western Lime - Eden | Eden | — | ◐ LIKELY ACTIVE |
| HRHayward Ready-mix Concrete LLC Div of Todd''s Redi | Hayward | — | ◐ LIKELY ACTIVE |
| LPLj Properties of Wisconsin LLC | Milwaukee | — | ◐ LIKELY ACTIVE |
| MMMeyer Material CO Kenosha 20 | Kenosha | — | ◐ LIKELY ACTIVE |
| MMMeyer Material CO Kenosha 40 | Kenosha | — | ◐ LIKELY ACTIVE |
| MMMeyer Material Company | Milwaukee | — | ◐ LIKELY ACTIVE |
| OOldcastle | Kenosha | — | ◐ LIKELY ACTIVE |
| OROzinga Ready-mix Burlington | Burlington | — | ◐ LIKELY ACTIVE |
| OROzinga Ready-mix Concrete Beloit | Beloit | — | ◐ LIKELY ACTIVE |
| OROzinga Ready-mix Concrete -lisbon/sussex | Sussex | — | ◐ LIKELY ACTIVE |
| OROzinga Ready-mix Concrete - Oak Creek | Oak Creek | — | ◐ LIKELY ACTIVE |
| QWQuikrete - Wisconsin Plant | Sussex | — | ◐ LIKELY ACTIVE |
| RCRoberts Concrete Products | Roberts | — | ◐ LIKELY ACTIVE |
| SISpancrete Industries - Valders | Valders | — | ◐ LIKELY ACTIVE |
| SGSpecialty Granules LLC | Pembine | — | ◐ LIKELY ACTIVE |
| TRTodd's Redi Mix Concrete | Ashland | — | ◐ LIKELY ACTIVE |
| TRTodd's Redimix Concrete | Rice Lake | — | ◐ LIKELY ACTIVE |
| USUsg Structural Technologies LLC | Delavan | — | ◐ LIKELY ACTIVE |
| BVBrown-wilbert Vault CO. - De Pere | Depere | — | ◇ UNVERIFIED |
| CCCarbo Ceramics INC - Marshfield Plant | Marshfield | — | ◇ UNVERIFIED |
| CACentral Aquatics - Plant #2 | Franklin | — | ◇ UNVERIFIED |
| CACentral Aquatics Plants 1 and 2 | Franklin | — | ◇ UNVERIFIED |
| FVFox Valley Energy Center LLC | Neenah | — | ◇ UNVERIFIED |
| JCJbt CORP | Mequon | — | ◇ UNVERIFIED |
| WWells | Valders | — | ◇ UNVERIFIED |
| WPWisconsin Porcelain | Sun Prairie | — | ◇ UNVERIFIED |
| EC"4018 - Eau Claire Concrete Plant" | Eau Claire | 20–99 | ◐ LIKELY ACTIVE |
| EC"4019 - Eau Claire Bagging Plant" | Eau Claire | 20–99 | ◐ LIKELY ACTIVE |
| IR"4719 - Iron Ridge Concrete Bagging" | Iron Ridge | 20–99 | ◐ LIKELY ACTIVE |
| 7W702 Wisconsin General | Franklin | 20–99 | ◐ LIKELY ACTIVE |
| 7K710 Kenosha Yard | Kenosha | 20–99 | ◐ LIKELY ACTIVE |
| 7M712 Mm Kenosha 46 Plant | Kenosha | 1–19 | ◐ LIKELY ACTIVE |