| MTMacon Treating Company | Macon | MS | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| MFMatthews & Fields Lumber | Henrietta | NY | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| MFMcclain Forest Products LLC | Van Buren | MO | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| MBMccormick & Baxter Creosoting CO. | Stockton | CA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| MBMg Building Materials | San Antonio | TX | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| MWMings Wood Treating | Falcon | MO | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| MWMountain West Products | Pilot Rock | OR | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| NANorth American Tie & Timber LLC | Scott City | MO | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| NINorth Idaho Wood Preserving | Rathdrum | ID | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| NSNorth South Wood Preserving Company | North | SC | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| OVOkaw Valley Woodworking | Arcola | IL | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| OPOklahoma Pole and Lumber INC / Oklahoma Pole and Lumber INC | Broken Bow | OK | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| OWOlivier-celcure Wood Preserving CORP | New Orleans | LA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| PWPacific Wood Treating CORP | Ridgefield | WA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| PMPaddy Mountain Lumber, INC. - M & N Woo | W Jefferson | NC | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| PDPennsburg Dry Clnr/pennsburg | Pennsburg | PA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| PWPensacola Wood Treating INC | Pensacola | FL | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| PLPerry Logistics | Henderson | NC | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| PWPicayune Wood Treating Site | Picayune | MS | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| PWPine Wood Products INC | Gainesville | GA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| POPort of Olympia Cascade Pole Site | Olympia | WA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| POPort of St. Helens Creosote Site | St Helens | OR | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| PIPridecraft INC | North Andover | MA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| PCPrime Choice Wood Priming | Allenstown | NH | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| PSProduction Systems INC. | Thomasville | NC | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| QFQuality Forest Prods INC | Enfield | NC | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| QTQuendall Terminals | Renton | WA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| RVRab Valley Wood Preserving | Panama | OK | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| RHRailway Handle Corporation | Kenbridge | VA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| RBRenew Biomass | Aurora | MO | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| RWRevelle Wood Treating | Bucyrus | MO | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| RLRidge Lumber & Treating INC | Lakeland | FL | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| RMRobbins Manufacturing Company | Lake City | FL | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| RWRoberts Wood Products | Mountain View | MO | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| RMRocky Mountain Prestain LLC | Denver | CO | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| RRRose Recycling | Greenfield | MO | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| RPRoyal Pacific Industries | Mcminnville | OR | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| RFRussin Factory Finish | Maybrook | NY | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SRSaint Regis Paper CO Site | Cass Lake | MN | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SFSaloom Furniture | Gardner | MA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SSSaunders Supply CO. | Chuckatuck | VA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SWSavannah Wood Preserving | Savannah | GA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SISchroth Industries INC | Indiana | PA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SPSees Post & Lumber Superfund Site | Marshfield | MO | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SISentinel Industries INC | Tumbling Shoals | AR | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SWShenandoah Wood Preservers | Scotland Neck | NC | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SMSolvay - Maiden Rock Mine | Melrose | MT | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SMSouthern Maryland Wood Treatment | Hollywood | MD | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SWSouthern Wood Piedmont CO | Gulf | NC | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SWSouthern Wood Treatment CO INC | Winchester | KY | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
