| SWSimcoe Wood Products INC. | Cullman | AL | — | ◇ UNVERIFIED |
| SISimonds International CORP | Fitchburg | MA | — | ◇ UNVERIFIED |
| SCSimpson County Wood Products CO | Franklin | KY | — | ◇ UNVERIFIED |
| STSimpson Timber CO Commencement Bay Opr | Tacoma | WA | — | ◇ UNVERIFIED |
| STSimpson Timber CO St Yd Sawmill 5 | Shelton | WA | — | ◇ UNVERIFIED |
| SBSims Bark Company INC | Brent | AL | — | ◇ UNVERIFIED |
| SMSingleton Mouldings | Breckenridge | TX | — | ◇ UNVERIFIED |
| SLSipe Lumber CO | Taylorsville | NC | — | ◇ UNVERIFIED |
| SKS & K Industries INC - Bldg #2 | Lexington | MO | — | ◇ UNVERIFIED |
| SLSkookum Lumber Plant | Shelton | WA | — | ◇ UNVERIFIED |
| SMSkyjack Mfg | Glendale | AZ | — | ◇ UNVERIFIED |
| SLSmallwood Lumber CO LLC | Frenchburg | KY | — | ◇ UNVERIFIED |
| SBSmith Brothers Lumber | Hartford | KY | — | ◇ UNVERIFIED |
| SCSmith Cabinet Works | Dyersville | IA | — | ◇ UNVERIFIED |
| SCSmith County | Forest | MS | — | ◇ UNVERIFIED |
| SFSmith Flooring INC | Winona | MO | — | ◇ UNVERIFIED |
| STSmith-turner Tie Company, LLC | Taylor | AR | — | ◇ UNVERIFIED |
| SPSmitty's Pallet Service | West Sacramento | CA | — | ◇ UNVERIFIED |
| SHSnow Hill Chip Mill | Snow Hill | NC | — | ◇ UNVERIFIED |
| SSSoil Solutions CO. | Elkhart | IN | — | ◇ UNVERIFIED |
| SDSole Design Cabinetry | Red Boiling Springs | TN | — | ◇ UNVERIFIED |
| SMSolon Manufacturing | Solon | ME | — | ◇ UNVERIFIED |
| SSSol-pro/lilyblad Site | Tacoma | WA | — | ◇ UNVERIFIED |
| SMSolvay - Maiden Rock Mine | Melrose | MT | — | ◇ UNVERIFIED |
| SWSomerset Wood Products in | Burnside | KY | — | ◇ UNVERIFIED |
| SCSonny Clnr/ Lower Gwynedd | Spring House | PA | — | ◇ UNVERIFIED |
| SPSonoco Products CO. - Baker Division | Granite Falls | NC | — | ◇ UNVERIFIED |
| SPSonoco Products - Temple | Temple | GA | — | ◇ UNVERIFIED |
| SRSonoco Reels | Hartselle | AL | — | ◇ UNVERIFIED |
| SSSorrells Sawmill | Sparkman | AR | — | ◇ UNVERIFIED |
| SCSouth Central Pallets, INC D/b/a Smith Pallet Company, INC | Hatfield | AR | — | ◇ UNVERIFIED |
| STSoutheastern Timber Products - Ackerman Mill | Ackerman | MS | — | ◇ UNVERIFIED |
| SLSouth-east Lumber CO | Kernersville | NC | — | ◇ UNVERIFIED |
| SPSoutheast Pallet Recycling CO | Louisville | KY | — | ◇ UNVERIFIED |
| SWSoutheast Wood Products INC. Dba Ramer Wood Products | Ramer | TN | — | ◇ UNVERIFIED |
| SMSouthern Maryland Wood Treatment | Hollywood | MD | — | ◇ UNVERIFIED |
| SVSouthern Veneer Company Incorporated | Thomasville | NC | — | ◇ UNVERIFIED |
| SWSouthern Wood Chips | Jasper | AL | — | ◇ UNVERIFIED |
| SWSouthern Wood Piedmont CO | Gulf | NC | — | ◇ UNVERIFIED |
| SWSouthern Wood Treating, INC. | Guayanilla | PR | — | ◇ UNVERIFIED |
| SWSouthern Wood Treatment CO INC | Winchester | KY | — | ◇ UNVERIFIED |
| SSSouthport Sawmill | North Bend | OR | — | ◇ UNVERIFIED |
| SSSouthport Sawmill | Coos Bay | OR | — | ◇ UNVERIFIED |
| SLSouthside Lumber Company Incorporated | Emporia | VA | — | ◇ UNVERIFIED |
| SLSouthwood Lumber & Pallet INC | Orrville | OH | — | ◇ UNVERIFIED |
| SBSpann Brothers Lumber CO INC | White Bluff | TN | — | ◇ UNVERIFIED |
| SWSpecialized Wood Products | Elkhart | IN | — | ◇ UNVERIFIED |
| SASpecialloy Acquisition Company | New Madrid | MO | — | ◇ UNVERIFIED |
| SHSpecialty Hardwoods of Indiana, INC. (nappanee Plant) | Nappanee | IN | — | ◇ UNVERIFIED |
| SMSpecialty Minerals | Jackson | AL | — | ◇ UNVERIFIED |
