| SFSnavely Forest Products Company | Westminster | MD | — | ◇ UNVERIFIED |
| SISnider Industries Sawmill | Marshall | TX | — | ◇ UNVERIFIED |
| S6Snowball 6.0, LLC | New Plymouth | ID | — | ◇ UNVERIFIED |
| SHSnow Hill Chip Mill | Snow Hill | NC | — | ◇ UNVERIFIED |
| SSSnow Shoe Refractories Llc/clarence Plt | Snow Shoe | PA | — | ◇ UNVERIFIED |
| SISocco INC | Sumas | WA | — | ◇ UNVERIFIED |
| SMSolon Manufacturing | Solon | ME | — | ◇ UNVERIFIED |
| SSSolt's Sawmill | Mertztown | PA | — | ◇ UNVERIFIED |
| SPSomerset Pellet Fuel | Science Hill | KY | — | ◇ UNVERIFIED |
| SWSomerset Wood Products in | Burnside | KY | — | ◇ UNVERIFIED |
| SLSouthbound Lumber, LLC | Bainbridge | OH | — | ◇ UNVERIFIED |
| SFSouthern Forest Products | Appalachia | VA | — | ◇ UNVERIFIED |
| SFSouthern Forest Products LLC | Hiltons | VA | — | ◇ UNVERIFIED |
| SLSouthern Lumber Company | Quaker City | OH | — | ◇ UNVERIFIED |
| SPSouthern Pine and Timber Company, INC. | Lithia | FL | — | ◇ UNVERIFIED |
| SPSouthern Pyle Lumber LLC | New Canton | VA | — | ◇ UNVERIFIED |
| SSSouthern Sawn Lumber Company, LLC | Savannah | GA | — | ◇ UNVERIFIED |
| SVSouthern Veneer Company Incorporated | Thomasville | NC | — | ◇ UNVERIFIED |
| SWSouthern Wood Chips | Jasper | AL | — | ◇ UNVERIFIED |
| SWSouthern Wood Works of Gray, LLC | Gray | GA | — | ◇ UNVERIFIED |
| SFSouth Florida Grading INC | Port Saint Lucie | FL | — | ◇ UNVERIFIED |
| SFSouth Florida Shavings CO. | Lake Worth | FL | — | ◇ UNVERIFIED |
| SWSouthland Wood Recycling, L.l.c. | Valdosta | GA | — | ◇ UNVERIFIED |
| SSSouthport Sawmill | Coos Bay | OR | — | ◇ UNVERIFIED |
| SSSouthport Sawmill | North Bend | OR | — | ◇ UNVERIFIED |
| SLSouthside Lumber Company Incorporated | Emporia | VA | — | ◇ UNVERIFIED |
| SBSpann Brothers Lumber CO INC | White Bluff | TN | — | ◇ UNVERIFIED |
| SMSpecialized Milling Corporation | Fontana | CA | — | ◇ UNVERIFIED |
| SBSpecialty Beams, LLC | Heron | MT | — | ◇ UNVERIFIED |
| SHSpecialty Hardwoods of Indiana, INC. (nappanee Plant) | Nappanee | IN | — | ◇ UNVERIFIED |
| SSSpecialty Shop, INC. | Manchester | CT | — | ◇ UNVERIFIED |
| SWSpecialty Wood Products INC | Monticello (wayne) | KY | — | ◇ UNVERIFIED |
| STSpencer Trucking | Blossvale | NY | — | ◇ UNVERIFIED |
| SVSpencer Veneer, Llc, Spencer | Spencer | WV | — | ◇ UNVERIFIED |
| SWSpigelmyer Wood Products, Incorporated | Lewistown | PA | — | ◇ UNVERIFIED |
| SLSpringfield Lumber Products INC | Junction City | OR | — | ◇ UNVERIFIED |
| SGSpring Grove Timber & Mat LLC | Claremont | VA | — | ◇ UNVERIFIED |
| SLSprowl Lumber Company Incorporated | Fountain Run | KY | — | ◇ UNVERIFIED |
| SKSquare K Lumber, LLC | Lewisburg | WV | — | ◇ UNVERIFIED |
| SSS & S Sawmill LLC | Peninsula | OH | — | ◇ UNVERIFIED |
| SSSs Stave CO INC | Hopkins County | KY | — | ◇ UNVERIFIED |
| SSStaggemeyer Stave CO INC | Caledonia | MN | — | ◇ UNVERIFIED |
| SPStandard Plywoods Incorporated | Clinton | SC | — | ◇ UNVERIFIED |
| SHStanfill Hardwood Lumber Company, INC. | Culleoka | TN | — | ◇ UNVERIFIED |
| SSStange Sawmill | Prattville | AL | — | ◇ UNVERIFIED |
| SLState Line Lumber | Tompkinsville | KY | — | ◇ UNVERIFIED |
| SCStella-jones Corporation | Goodwater | AL | — | ◇ UNVERIFIED |
| SLSterling Lumber & Supply Company | Goodwater | AL | — | ◇ UNVERIFIED |
 Sterling Site Access Solutions LLC (0303012025) | Ashland | OH | — | ◇ UNVERIFIED |
| SMSteve Martin Sawmill | Liberty [casey] | KY | — | ◇ UNVERIFIED |
