| GNGlacier Northwest Chehalis Plant | Chehalis | — | ◇ UNVERIFIED |
| FCFLOFORM Countertops | Kent | 100–499 | ◐ LIKELY ACTIVE |
| KIKyocera International INC | Vancouver | 100–499 | ▲ REPORTED CLOSED |
| MGMothership Glasss LLC | Bellingham | 20–99 | ◐ LIKELY ACTIVE |
Xl Sci-tech INC | Richland | — | ◐ LIKELY ACTIVE |
| MMMutual Materials CO Bellevue | Bellevue | 100–499 | ◐ LIKELY ACTIVE |
| WCWa317949239 - Cuz Concrete Products INC | Arlington | 20–99 | ◐ LIKELY ACTIVE |
| CSConcrete Shop INC | Vancouver | 1–19 | ◇ UNVERIFIED |
| OPOlympian Precast INC | Redmond | 20–99 | ◇ UNVERIFIED |
| CCCelite Corporation | Quincy | — | ◐ LIKELY ACTIVE |
| CECemex Everett Pit | Everett | — | ◐ LIKELY ACTIVE |
| GNGlacier Northwest Pioneer Aggregates | Dupont | — | ◐ LIKELY ACTIVE |
| GWGraymont Western | Tacoma | — | ◐ LIKELY ACTIVE |
| HGHartung Glass Tukwila WA | Tukwila | 100–499 | ◐ LIKELY ACTIVE |
| PCPrecast Concrete LLC | Fife | 20–99 | ◐ LIKELY ACTIVE |
| SCShope Concrete LLC | Puyallup | — | ◐ LIKELY ACTIVE |
| SRSkagit Ready Mix Mcfarland Road | Mount Vernon | — | ◐ LIKELY ACTIVE |
| AAAka Airway Pit | Airway Heights | — | ◐ LIKELY ACTIVE |
| ARAmerican Rock Products Hanford | Richland | — | ◐ LIKELY ACTIVE |
| AGAsh Grove Cement Company-seattle | Seattle | — | ◐ LIKELY ACTIVE |
| BIBakken Industries, Inc. | Vancouver | 20–99 | ◐ LIKELY ACTIVE |
| BBasalite | Dupont | — | ◐ LIKELY ACTIVE |
| CCCardinal Cg | Tumwater | — | ◐ LIKELY ACTIVE |
| CPCentral Pre Mix Concrete Pasco | Pasco | — | ◐ LIKELY ACTIVE |
| CPCentral Pre Mix Concrete Products | Spokane | — | ◐ LIKELY ACTIVE |
| CSCorliss Sumner Pit | Sumner | — | ◐ LIKELY ACTIVE |
| HCHolroyd CO Nisqually Pit | Olympia | — | ◐ LIKELY ACTIVE |
| JHJames Hardie Building Products | Tacoma | — | ◐ LIKELY ACTIVE |
| KRKelso Rm | Kelso | — | ◐ LIKELY ACTIVE |
| NANorthwest Aggregates Snoqualmie | Snoqualmie | — | ◐ LIKELY ACTIVE |
| OPOldcastle Precast, INC. - Bellingham | Bellingham | — | ◐ LIKELY ACTIVE |
| PSPlumb Signs INC S 28th | Anacortes | — | ◐ LIKELY ACTIVE |
| PIPyrotek Incorporated | Spokane | — | ◐ LIKELY ACTIVE |
| SPSmokey Point Concrete | Arlington | — | ◐ LIKELY ACTIVE |
| WUWa317941422 - Ultrablock INC | Vancouver | 20–99 | ◐ LIKELY ACTIVE |
| WRWalrath Recycling INC | Tacoma | — | ◐ LIKELY ACTIVE |
| CICadman INC Gold Bar | Gold Bar | — | ◇ UNVERIFIED |
| COCadman Orchards Facility | Vancouver | — | ◇ UNVERIFIED |
| CSCadman Seattle INC | Seattle | — | ◇ UNVERIFIED |
| CTCarlile Transportation Systems | Tacoma | — | ◇ UNVERIFIED |
| CTCertain Teed Gypsum INC | Kent | — | ◇ UNVERIFIED |
| CNConcrete Norwest Getchell Pit | Lake Stevens | — | ◇ UNVERIFIED |
| CDCoulee Dam Concrete / Elmer City Concrete | Coulee Dam | — | ◇ UNVERIFIED |
| CDCpm Development Corporation Quincy | Quincy | — | ◇ UNVERIFIED |
| CPCxt-precast Plant | Spokane | — | ◇ UNVERIFIED |
| ESEldorado Stone Royal City Facility | Royal City | — | ◇ UNVERIFIED |
| GNGlacier Nw Reichhold Mtca | Seattle | — | ◇ UNVERIFIED |
| HCHolroyd CO Lakewood | Lakewood | — | ◇ UNVERIFIED |
| KIKyocera International | Vancouver | — | ◇ UNVERIFIED |
| LCLehigh Cement CO | Metaline Falls | — | ◇ UNVERIFIED |