| CWCentral Washington Concrete Othello | Othello | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CIChihuly INC | Tacoma | WA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| CKClo K Stoneworks LLC | Bellingham | WA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CLCmu, LLC | Puyallup | WA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| CNConcrete Norwest Smith Island | Everett | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CPConcrete Products of Western Washington | Puyallup | WA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| CWCourt Walker LLC | Seattle | WA | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| CWCourt Walker LLC | Seattle | WA | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| CWCourt Walker LLC | Seattle | WA | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| CGCowden Gravel Cowden INC | Bellingham | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CPC P M Development CORP | Tyler | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CPC P M Development CORP | Spokane Valley | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CPCumberland Property | Cumberland | WA | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| DWDavid Wight Glass Art, Inc. | Bellingham | WA | Nonmetallic Mineral Product Manufacturing327212 | — | ◇ UNVERIFIED |
| DCDrb Company | Snohomish | WA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| EGEfni Group INC | Washougal | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| EIEsmp INC | Monroe | WA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| FCFloform Countertops | Spokane Valley | WA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| GNGlacier Northwest INC Everett | Everett | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| GNGlacier Northwest INC Vancouver Ready Mix Plant | Vancouver | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| GNGlacier Northwest Ready-mix Plant Site | Gig Harbor | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| GNGlacier Northwest Tumwater Plant | Tumwater | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| GNGlacier Northwest Yelm Plant | Yelm | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| GNGlacier Nw Plant Site | Aberdeen | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| GGlassybaby | Seattle | WA | Nonmetallic Mineral Product Manufacturing327212 | — | ◇ UNVERIFIED |
| GGGranite Gallery LLC | Tumwater | WA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| GNGranite Northwestriverscene Aggrega | Granite Falls | WA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| GTGranite Transformations of Kin | Seattle | WA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| GIGreenbank Inc | Coupeville | WA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| HUHolcim US INC Ravensdale | Ravensdale | WA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| IMIcon Materials | Sumner | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IMIcon Materials | Seattle | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IIInterpace Industries Site | Spokane | WA | Nonmetallic Mineral Product Manufacturing327000 | — | ◇ UNVERIFIED |
| ICInterstate Concrete and Asphalt CO Elk | Elk | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ICInterstate Concrete & Asphalt - Market | Spokane | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ILIssato LLC | Puyallup | WA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| JNJulio N. Esteban Mejia | Puyallup | WA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| KIKoncrete Industries Coneco Portable | Walla Walla | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| KIKyocera Industrial Ceramics CO | Vancouver | WA | Nonmetallic Mineral Product Manufacturing327113 | — | ◇ UNVERIFIED |
| MAMaytown Aggregates | Tenino | WA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| MOMeans Ornamental Concrete Studio II | Olympia | WA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
 Miles Sand & Gravel CO | Auburn | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| Miles Sand & Gravel CO | Puyallup | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| Miles Sand & Gravel Company Poulsbo Facility | Poulsbo | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MAModular Arts | Kent | WA | Nonmetallic Mineral Product Manufacturing327420 | — | ◇ UNVERIFIED |
| MSMountain Strong Concrete, Inc. | Tacoma | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MBMt Baker Silo INC | Lynden | WA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MMud | Bellingham | WA | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| MMMutual Materials | Mica | WA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| MMMutual Materials CO | Renton | WA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
