| CTConcrete Technology Corporation | Tacoma | 100–499 | ● ACTIVE |
Miles Sand & Gravel Company | Puyallup | — | ● ACTIVE |
Automatic Wilbert Vault Co., INC. | Tacoma | — | ● ACTIVE |
Cascade Mobile Mix & Concrete Line Pumping LLC | Tacoma | — | ● ACTIVE |
Northwest Precast LLC | Puyallup | — | ● ACTIVE |
Summit Precast LLC | Puyallup | — | ● ACTIVE |
| QSQuikrete - Seattle, Wa Plant | Tacoma | 20–99 | ◐ LIKELY ACTIVE |
| FPFrederickson Paver and Block Plant Site | Tacoma | — | ◐ LIKELY ACTIVE |
| GGGp Gypsum CORP Tacoma Plant | Tacoma | — | ◐ LIKELY ACTIVE |
| JHJames Hardie Building Products | Tacoma | — | ◐ LIKELY ACTIVE |
| GWGraymont Western | Tacoma | — | ◐ LIKELY ACTIVE |
| PCPrecast Concrete LLC | Fife | 20–99 | ◐ LIKELY ACTIVE |
| SCShope Concrete LLC | Puyallup | — | ◐ LIKELY ACTIVE |
| CSCorliss Sumner Pit | Sumner | — | ◐ LIKELY ACTIVE |
| WRWalrath Recycling INC | Tacoma | — | ◐ LIKELY ACTIVE |
| BCBasalite Concrete Products | Dupont | — | ◇ UNVERIFIED |
| CMCanam Minerals INC. Dba Kleen Blast Abrasives | Tacoma | — | ◇ UNVERIFIED |
| CTCarlile Transportation Systems | Tacoma | — | ◇ UNVERIFIED |
| HCHolroyd CO Lakewood | Lakewood | — | ◇ UNVERIFIED |
| JHJames Hardie Building Products | Tacoma | — | ◇ UNVERIFIED |
| MMonierlifetile | Tacoma | — | ◇ UNVERIFIED |
| NTNewcold Tacoma | Tacoma | — | ◇ UNVERIFIED |
| APArchitectural Products Nw LLC | Lakebay | — | ◐ LIKELY ACTIVE |
| BDBasalite - DuPont | Dupont | 20–99 | ◐ LIKELY ACTIVE |
| CRCorliss Resources, LLC | Sumner | — | ◐ LIKELY ACTIVE |
| GNGlacier Northwest dba CalPortland (Taylor Way Ready Mix) | Tacoma | 1–19 | ◐ LIKELY ACTIVE |
| HPHM PNW- Sumner | Sumner | 100–499 | ◐ LIKELY ACTIVE |
| HCHolroyd Company, INC. | Lakewood | — | ◐ LIKELY ACTIVE |
| JHJames Hardie | Tacoma | 100–499 | ◐ LIKELY ACTIVE |
| JHJames Hardie North America | Tacoma | 100–499 | ◐ LIKELY ACTIVE |
| LLakewood | Tacoma | 20–99 | ◐ LIKELY ACTIVE |
| TCTopLine Counters | Sumner | 100–499 | ◐ LIKELY ACTIVE |
| WTWashington Tacoma 4802 Tacoma Mall Blvd | Tacoma | 1–19 | ◐ LIKELY ACTIVE |
| WTWa317949525 - Tacoma Glass Manufacturing INC | Lakewood | — | ◇ UNVERIFIED |
| AEAmpac Enterprises INC | Tacoma | — | ◇ UNVERIFIED |
| BIBrothers Investment LLC | Lakewood | — | ◇ UNVERIFIED |
| CIChihuly INC | Tacoma | — | ◇ UNVERIFIED |
| CLCmu, LLC | Puyallup | — | ◇ UNVERIFIED |
| CPConcrete Products of Western Washington | Puyallup | — | ◇ UNVERIFIED |
| GGGeorgia-pacific Gypsum LLC | Tacoma | — | ◇ UNVERIFIED |
| GNGlacier Northwest Pioneer Aggregates | Dupont | — | ◇ UNVERIFIED |
| GNGlacier Northwest Ready-mix Plant Site | Gig Harbor | — | ◇ UNVERIFIED |
| IMIcon Materials | Sumner | — | ◇ UNVERIFIED |
| ILIssato LLC | Puyallup | — | ◇ UNVERIFIED |
| JNJulio N. Esteban Mejia | Puyallup | — | ◇ UNVERIFIED |
Miles Sand & Gravel CO | Puyallup | — | ◇ UNVERIFIED |
| MSMountain Strong Concrete, Inc. | Tacoma | — | ◇ UNVERIFIED |
| MMMutual Materials Lakewood Block Plt | Tacoma | — | ◇ UNVERIFIED |
| RGRas Granite & Marble | Tacoma | — | ◇ UNVERIFIED |
| SCShope Concrete Products CO | Puyallup | — | ◇ UNVERIFIED |