 Sierra Pacific Industries (2042-rd) | Red Bluff | CA | — | ◇ UNVERIFIED |
| Sierra Pacific Industries - Arcata Division | Arcata | CA | — | ◇ UNVERIFIED |
| Sierra Pacific Industries - Keystone Bark Plant | Jamestown | CA | — | ◇ UNVERIFIED |
| Sierra Pacific Industries - Martell | Martell | CA | — | ◇ UNVERIFIED |
| Sierra Pacific Industries - Shelton | Shelton | WA | — | ◇ UNVERIFIED |
| SBSiller Bros INC | Anderson | CA | — | ◇ UNVERIFIED |
| SCSilva's Cabinet Shop | Newark | CA | — | ◇ UNVERIFIED |
| SBSilver Bay Logging Wrangell Sawmill | Wrangell | AK | — | ◇ UNVERIFIED |
| SWSimcoe Wood Products INC. | Cullman | AL | — | ◇ UNVERIFIED |
| SLSimmons Logging, LLC | Toone | TN | — | ◇ UNVERIFIED |
| SLSimpson Lumber Company, LLC | Tacoma | WA | — | ◇ 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 |
| SBSims Bark of Georgia LLC | Crothersville | IN | — | ◇ UNVERIFIED |
| SFSindelar Fine Woodworking, Inc. | Granger | IN | — | ◇ UNVERIFIED |
| SRSingleton Reels Inc. | Rootstown | OH | — | ◇ UNVERIFIED |
| SLSiwek Lumber and Millwork INC | Jordan | MN | — | ◇ UNVERIFIED |
| SLSkidmore Lumber Co., LLC | Freeburg | MO | — | ◇ UNVERIFIED |
| SKS K Lumber | Cochranton | PA | — | ◇ UNVERIFIED |
| SLSkookum Lumber Plant | Shelton | WA | — | ◇ UNVERIFIED |
| SMSkyjack Mfg | Glendale | AZ | — | ◇ UNVERIFIED |
| SPSkyline Post and Pole Limited Liability Company | Louisa | VA | — | ◇ UNVERIFIED |
| SCSlade's Custom Sawmill | Providence | NC | — | ◇ UNVERIFIED |
| SRSlice Recovery INC | Coquille | OR | — | ◇ UNVERIFIED |
| SLSmallwood Lumber CO LLC | Frenchburg | KY | — | ◇ UNVERIFIED |
| SCSmart Craft Technologies, INC. | Reno | NV | — | ◇ UNVERIFIED |
| SMS M C Lumber CO INC | Pulaski | TN | — | ◇ UNVERIFIED |
| S3Smink 3 LLC | Dallas | TX | — | ◇ UNVERIFIED |
| SBSmith Brothers Lumber | Hartford | KY | — | ◇ UNVERIFIED |
| SFSmith Flooring INC | Winona | MO | — | ◇ UNVERIFIED |
| SMSmith Manufacturing | Benton Harbor | MI | — | ◇ UNVERIFIED |
| SSSmith Steps, INC. | Live Oak | FL | — | ◇ UNVERIFIED |
| STSmith Textile Apron | Gastonia | NC | — | ◇ UNVERIFIED |
| SASmk Associates INC. | Astoria | NY | — | ◇ UNVERIFIED |
| SHSmoke House Lumber Company | Warrenton | NC | — | ◇ UNVERIFIED |
| SISmoothbore International, INC. | Red Creek | NY | — | ◇ UNVERIFIED |
| SISnider Industries Sawmill | Marshall | TX | — | ◇ UNVERIFIED |
| SLSnider Lumber Products CO | Turlock | CA | — | ◇ 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 |
| SSSoil Sollutions Company | Shipshewana | IN | — | ◇ UNVERIFIED |
| SSSoil Solutions CO. | Elkhart | IN | — | ◇ UNVERIFIED |
| SDSole Design Cabinetry | Red Boiling Springs | TN | — | ◇ UNVERIFIED |
| SISoliman Investments III LLC | Columbus | OH | — | ◇ UNVERIFIED |
| SSSol-pro/lilyblad Site | Tacoma | WA | — | ◇ UNVERIFIED |
| SSSolt's Sawmill | Mertztown | PA | — | ◇ UNVERIFIED |
| SPSomerset Pellet Fuel | Science Hill | KY | — | ◇ UNVERIFIED |
| SWSomerset Wood Products in | Burnside | KY | — | ◇ UNVERIFIED |
| SUSomething Unique Designs | Littleton | CO | — | ◇ UNVERIFIED |
| SRSonoco Reels | Hartselle | AL | — | ◇ UNVERIFIED |
| SRSouthbridge Recycling & Disposal Park | Southbridge | MA | — | ◇ UNVERIFIED |
| SHSoutheastern Hardwoods, Inc. | Swannanoa | NC | — | ◇ UNVERIFIED |
| SFSouthern Forest Products | Appalachia | VA | — | ◇ UNVERIFIED |
| SFSouthern Forest Products LLC | Hiltons | VA | — | ◇ UNVERIFIED |
| SISouthern Indiana Sawmill LLC | Greenville | IN | — | ◇ UNVERIFIED |
| SMSouthern Moulding LLC | Kennesaw | GA | — | ◇ UNVERIFIED |
| SNSouthern New Hampshire Fire Wood, LLC | Hudson | NH | — | ◇ UNVERIFIED |
| SPSouthern Pine and Timber Company, INC. | Lithia | FL | — | ◇ UNVERIFIED |
| SPSouthern Pyle Lumber LLC | New Canton | VA | — | ◇ UNVERIFIED |
| STSouthern Timber Products LLC | Ruther Glen | VA | — | ◇ UNVERIFIED |
| SWSouthern Wood Chips | Jasper | AL | — | ◇ UNVERIFIED |
| SWSouthern Wood Suppliers, INC. | Oglethorpe | GA | — | ◇ UNVERIFIED |
| SWSouthern Wood Works of Gray, LLC | Gray | GA | — | ◇ UNVERIFIED |
| SFSouth Florida Shavings CO. | Lake Worth | FL | — | ◇ UNVERIFIED |
| SWSouthland Wood Recycling, L.l.c. | Valdosta | GA | — | ◇ UNVERIFIED |
| SSSouthport Sawmill | North Bend | OR | — | ◇ UNVERIFIED |
| SSSouthport Sawmill | Coos Bay | OR | — | ◇ UNVERIFIED |
| SRSouthwest Renewable Brown Street Mill | Snowflake | AZ | — | ◇ UNVERIFIED |
| SMSpace Manufacturers Corporation | Geneva | NY | — | ◇ UNVERIFIED |
| SBSpann Brothers Lumber CO INC | White Bluff | TN | — | ◇ UNVERIFIED |
| SWSpecialized Wood Products | Elkhart | IN | — | ◇ UNVERIFIED |
| SBSpecialty Beams, LLC | Heron | MT | — | ◇ UNVERIFIED |
| SISpecialty, INC. | Homedale | ID | — | ◇ UNVERIFIED |
| SLSpecialty Lumber Company ** Inactive ** | Wilsons Mills | NC | — | ◇ UNVERIFIED |
| SWSpecialty Wood Products | Lodi | CA | — | ◇ UNVERIFIED |
| SWSpecialty Wood Products INC | Monticello (wayne) | KY | — | ◇ UNVERIFIED |
| SCSpectrum Custom Design, INC | Desert Hot Springs | CA | — | ◇ UNVERIFIED |
| SESpectrum Energy Georgia, LLC | Adel | GA | — | ◇ UNVERIFIED |
| SLSpencer LLC Monroe | Monroe | WA | — | ◇ UNVERIFIED |
| SCSpencer's Custom Wood LLC | Elgin | TX | — | ◇ UNVERIFIED |
| STSpencer Trucking | Blossvale | NY | — | ◇ UNVERIFIED |
| SWSpigelmyer Wood Products, Incorporated | Lewistown | PA | — | ◇ UNVERIFIED |
| SOSpirit of the Woods, Inc | Jackman | ME | — | ◇ 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 |
| SSS& S Wood Products | Independence | WI | — | ◇ UNVERIFIED |
| SSStaggemeyer Stave CO INC | Caledonia | MN | — | ◇ UNVERIFIED |
| SIStan's Industrial Manufacturing LLC | Lyndon Station | WI | — | ◇ UNVERIFIED |
| SHStanfill Hardwood Lumber Company, INC. | Culleoka | TN | — | ◇ UNVERIFIED |
| SSStange Sawmill | Prattville | AL | — | ◇ UNVERIFIED |
| STStarwood Trim INC | Frisco | TX | — | ◇ UNVERIFIED |
| SLStashwood LLC | San Tan Valley | AZ | — | ◇ UNVERIFIED |
| SLState Line Lumber | Tompkinsville | KY | — | ◇ UNVERIFIED |
| SAStavola Asphalt CO INC | Old Bridge Twp | NJ | — | ◇ UNVERIFIED |
