| SFSmith Flooring Company | Mountain View | 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 |
| SLSnider Lumber Products CO | Turlock | CA | — | ◇ 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 |
| SUSomething Unique Designs | Littleton | CO | — | ◇ UNVERIFIED |
| SRSonoco Reels | Hartselle | AL | — | ◇ UNVERIFIED |
| SRSouthbridge Recycling & Disposal Park | Southbridge | MA | — | ◇ UNVERIFIED |
| SHSoutheastern Hardwoods, Inc. | Swannanoa | NC | — | ◇ UNVERIFIED |
| SWSoutheast Wood | Mineola | TX | — | ◇ UNVERIFIED |
| SISouthern Indiana Sawmill LLC | Greenville | IN | — | ◇ UNVERIFIED |
| SLSouthern Lumber & Treating CO | Jacksonville | FL | — | ◇ UNVERIFIED |
| SMSouthern Maryland Wood Treatment | Hollywood | MD | — | ◇ UNVERIFIED |
| SMSouthern Moulding LLC | Kennesaw | GA | — | ◇ UNVERIFIED |
| SNSouthern New Hampshire Fire Wood, LLC | Hudson | NH | — | ◇ UNVERIFIED |
| STSouthern Timber Products LLC | Ruther Glen | VA | — | ◇ UNVERIFIED |
| SWSouthern Wood Piedmont CO | Gulf | NC | — | ◇ UNVERIFIED |
| SWSouthern Wood Piedmont CO | East Point | GA | — | ◇ UNVERIFIED |
| SWSouthern Wood Piedmont CO | Baldwin | FL | — | ◇ UNVERIFIED |
| SWSouthern Wood Suppliers, INC. | Oglethorpe | GA | — | ◇ UNVERIFIED |
| SUSouthside Utilities & Maintenance INC | Red Oak | VA | — | ◇ UNVERIFIED |
| SRSouthwest Renewable Brown Street Mill | Snowflake | AZ | — | ◇ UNVERIFIED |
| SMSpace Manufacturers Corporation | Geneva | NY | — | ◇ UNVERIFIED |
| SWSpecialized Wood Products | Elkhart | IN | — | ◇ UNVERIFIED |
| SASpecialloy Acquisition Company | New Madrid | MO | — | ◇ UNVERIFIED |
| SISpecialty, INC. | Homedale | ID | — | ◇ UNVERIFIED |
| SLSpecialty Lumber Company ** Inactive ** | Wilsons Mills | NC | — | ◇ UNVERIFIED |
| SWSpecialty Wood Products | Lodi | CA | — | ◇ UNVERIFIED |
| SCSpectrum Custom Design, INC | Desert Hot Springs | CA | — | ◇ UNVERIFIED |
| SESpectrum Energy Georgia, LLC | Adel | GA | — | ◇ UNVERIFIED |
| SFSpence Fence Company Enterprises | Visalia | CA | — | ◇ UNVERIFIED |
| SLSpencer LLC Monroe | Monroe | WA | — | ◇ UNVERIFIED |
| SCSpencer's Custom Wood LLC | Elgin | TX | — | ◇ UNVERIFIED |
| SOSpirit of the Woods, Inc | Jackman | ME | — | ◇ UNVERIFIED |
| SCSpokane Custom Wood Treating | Spokane | WA | — | ◇ UNVERIFIED |
| SSS& S Wood Products | Independence | WI | — | ◇ UNVERIFIED |
| STStallworth Timber CO | Beatrice | AL | — | ◇ UNVERIFIED |
| SIStan's Industrial Manufacturing LLC | Lyndon Station | WI | — | ◇ UNVERIFIED |
| SBStanford Boathouse | Redwood City | CA | — | ◇ UNVERIFIED |
| STStarwood Trim INC | Frisco | TX | — | ◇ UNVERIFIED |
| SLStashwood LLC | San Tan Valley | AZ | — | ◇ UNVERIFIED |
| SAStavola Asphalt CO INC | Old Bridge Twp | NJ | — | ◇ UNVERIFIED |
| SKSteigerwald's Kitchen & Bath, INC. | Grove City | PA | — | ◇ UNVERIFIED |
| SJStella Jones | Savannah | TN | — | ◇ UNVERIFIED |
| SJStella Jones | Jasper | TX | — | ◇ UNVERIFIED |
| SStella-jones | Lufkin | TX | — | ◇ UNVERIFIED |
| SCStella-jones CORP | Terre Haute | IN | — | ◇ UNVERIFIED |
| SCStella-jones CORP | Fulton | KY | — | ◇ UNVERIFIED |
| SCStella-jones CORP | Warrior | AL | — | ◇ UNVERIFIED |
| SJStella Jones Corp/dubois Div | Dubois | PA | — | ◇ UNVERIFIED |
| SJStella Jones CORP - Mcalisterville Division | Mc Alisterville | PA | — | ◇ UNVERIFIED |
| SJStella Jones Corporation | Brierfield | AL | — | ◇ UNVERIFIED |
| SJStella Jones Corporation | Winslow | IN | — | ◇ UNVERIFIED |
| SCStella-jones Corporation | Durant | MS | — | ◇ UNVERIFIED |
| SCStella-jones Corporation | Bay Minette | AL | — | ◇ UNVERIFIED |
| SCStella-jones Corporation | Reedy | WV | — | ◇ UNVERIFIED |
| SCStella-jones Corporation Bellingham | Bellingham | WA | — | ◇ UNVERIFIED |
| SPStem Products | Magazine | AL | — | ◇ UNVERIFIED |
| SWStephan Wood Prod INC | Grayling | MI | — | ◇ UNVERIFIED |
 Sterling Site Access Solutions | Lufkin | TX | — | ◇ UNVERIFIED |
| SASteves and Sons Door Company | San Antonio | TX | — | ◇ UNVERIFIED |
| SRStevo's Reclaimed | Mount Airy | MD | — | ◇ UNVERIFIED |
| SCStewart Custom Wood Works, INC. | Alpharetta | GA | — | ◇ UNVERIFIED |
| SPStewarts Point Woodworks LLC | Cazadero | CA | — | ◇ UNVERIFIED |
| SFStillwater Forest Products | Kalispell | MT | — | ◇ UNVERIFIED |
| SLStimson Lumber Company, Hauser | Post Falls | ID | — | ◇ UNVERIFIED |
| SWSTL Woodworking Inc. | Saint Louis | MO | — | ◇ UNVERIFIED |
| SMSt Maries Creosote Site | Saint Maries | ID | — | ◇ UNVERIFIED |
| SWStockton Wood Shavings Company | French Camp | CA | — | ◇ UNVERIFIED |
| SWStock Woodwork | Laredo | TX | — | ◇ UNVERIFIED |
| SFStone Forest Industries, INC. | Happy Camp | CA | — | ◇ UNVERIFIED |
| SPStorage Pro Manufacturing LLC | Creola | AL | — | ◇ UNVERIFIED |
| SSStorage Systems, INC | Fresno | CA | — | ◇ UNVERIFIED |
| SIStratis Industries | Centuria | WI | — | ◇ UNVERIFIED |
| SLStridemark, LLC | Thomasville | NC | — | ◇ UNVERIFIED |
| SIStructural Industries, INC. | Bohemia | NY | — | ◇ UNVERIFIED |
| SIStructural Insulated Panels Texas | Kerrville | TX | — | ◇ UNVERIFIED |
| SPSturdi Products Company | Portland | OR | — | ◇ UNVERIFIED |
| SHSTW Holdings, LLC | Fleetwood | PA | — | ◇ UNVERIFIED |
| SFSunbelt Forest Georgia, LLC | Ringgold | GA | — | ◇ UNVERIFIED |
| SFSunbelt Forest Products | Rockledge | FL | — | ◇ UNVERIFIED |
| SSSunbelt Shavings LLC | Shuqualak | MS | — | ◇ UNVERIFIED |
| SCSunspot Creative Services | Bellingham | WA | — | ◇ UNVERIFIED |
| SVSun Valley Closet Company, INC | Hailey | ID | — | ◇ UNVERIFIED |
| SISuperior Industries International, INC. | Johnson City | TN | — | ◇ UNVERIFIED |
| SKSuperior Kiln | Mellen | WI | — | ◇ UNVERIFIED |
| SLSuperiornova, LLC | Arlington | VA | — | ◇ UNVERIFIED |
| SPSuperior Pellet Fuels, LLC | North Pole | AK | — | ◇ UNVERIFIED |
| STSuperior Trim & Door, INC. | Apopka | FL | — | ◇ UNVERIFIED |
| SWSuperior Wood Treating | Sumner | WA | — | ◇ UNVERIFIED |
| SCSustainable Casework Industries | Deerfield Beach | FL | — | ◇ UNVERIFIED |
| SCSwan & CO Innovations LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| SBSwanson Bark and Wood Products | Longview | WA | — | ◇ UNVERIFIED |
| SBSwp Baldwin Interim Action Soil Removal at Area B | Baldwin | FL | — | ◇ UNVERIFIED |
