| LSLake States Lumber/timberland | Aitkin | MN | — | ◇ UNVERIFIED |
| LCLarry C Cribb | Hilliard | FL | — | ◇ UNVERIFIED |
| LLat/long_used | Bakersfield | CA | — | ◇ UNVERIFIED |
| LTLaurel Treated Wood Products INC. | London | KY | — | ◇ UNVERIFIED |
| LDL D Mcfarland CO | Eugene | OR | — | ◇ UNVERIFIED |
| LHLeo Hicks Creosoting | Alto | TX | — | ◇ UNVERIFIED |
| L1Level 10 Construction | San Bruno | CA | — | ◇ UNVERIFIED |
| LCLewis & Clark Sawmill | West Alton | MO | — | ◇ UNVERIFIED |
| LOLignetics of West Virginia, Inc., Stouts Mill | Sand Fork | WV | — | ◇ UNVERIFIED |
| LBLittrell Bros Lumber CO | Vinemont | AL | — | ◇ UNVERIFIED |
 Louisiana-pacific Hines Site | Hines | OR | — | ◇ UNVERIFIED |
| LFLucedale Forestry Product LLC | Lucedale | MS | — | ◇ UNVERIFIED |
| LOLumber One Wood Preserving LLC | Sheffield | AL | — | ◇ UNVERIFIED |
| M1MAC 1 VENTURES, INC. dba N-Hance of Orange and Alamance Counties | Efland | NC | — | ◇ UNVERIFIED |
| MSMacon Septic Systems Company INC | Macon | MS | — | ◇ UNVERIFIED |
| MGMarcus Gilmour | Menlo Park | CA | — | ◇ UNVERIFIED |
| MFMatthews & Fields Lumber | Henrietta | NY | — | ◇ UNVERIFIED |
| MCMax Cabinets Company | Los Angeles | CA | — | ◇ UNVERIFIED |
| MFMcclain Forest Products LLC | Van Buren | MO | — | ◇ UNVERIFIED |
| MBMccormick & Baxter Creosoting CO. | Stockton | CA | — | ◇ UNVERIFIED |
| MCMcfarland Cascade Holdings INC | Sheridan | OR | — | ◇ UNVERIFIED |
| MCMcfarland Cascade Holdings, INC. | Scooba | MS | — | ◇ UNVERIFIED |
| MCMcfarland Cascade Holdings INC Cameron Plant | Cameron | WI | — | ◇ UNVERIFIED |
| MCMcfarland Cascade Pole and Lumber | Sandpoint | ID | — | ◇ UNVERIFIED |
| MTMesenbrink Timbercraft | Rathdrum | ID | — | ◇ UNVERIFIED |
| MBMg Building Materials | San Antonio | TX | — | ◇ UNVERIFIED |
| MGM G Building Materials, INC | San Antonio | TX | — | ◇ UNVERIFIED |
| MMMichigan Maple Block CO | Petoskey | MI | — | ◇ UNVERIFIED |
| MMMidwest Manufacturing | Holiday City | OH | — | ◇ UNVERIFIED |
| MSMiller Sweeney Bridge Fender System Repair - Spec 2343 | Alameda | CA | — | ◇ UNVERIFIED |
| MWMings Wood Treating | Falcon | MO | — | ◇ UNVERIFIED |
| MCMonitor Company | Tacoma | WA | — | ◇ UNVERIFIED |
| MWMontclair Wood Corporation | Montclair | CA | — | ◇ UNVERIFIED |
| MWMountain West Products | Pilot Rock | OR | — | ◇ UNVERIFIED |
| MMs2 | Fresno | CA | — | ◇ UNVERIFIED |
| MDMy Decor Products, LLC | Mapleton | UT | — | ◇ UNVERIFIED |
| NONew Orchard Ventures Inc. | Bogart | GA | — | ◇ UNVERIFIED |
| NONhance of Park Cities LLC | Dallas | TX | — | ◇ UNVERIFIED |
| NANorth American Tie & Timber LLC | Scott City | MO | — | ◇ UNVERIFIED |
| NPNortheast Pier Technologies LLC | Pittsfield | MA | — | ◇ UNVERIFIED |
| NMNorthern Ma Home Services LLC | Malden | MA | — | ◇ UNVERIFIED |
| NTNorth Texas Flameproof & Wood Specialties CORP. | Fort Worth | TX | — | ◇ UNVERIFIED |
| NCNorthwest Coating Systems INC | Woodburn | OR | — | ◇ UNVERIFIED |
| NSNorthwestern Showcase & Fixture CO | Los Angeles | CA | — | ◇ UNVERIFIED |
| NHNorthwest Hardwoods Bethel Drive | Eugene | OR | — | ◇ UNVERIFIED |
| OCOeser CO | Bellingham | WA | — | ◇ UNVERIFIED |
| OCOeser Company the | Sumas | WA | — | ◇ UNVERIFIED |
| OVOkaw Valley Woodworking | Arcola | IL | — | ◇ UNVERIFIED |
| OPOklahoma Pole and Lumber INC / Oklahoma Pole and Lumber INC | Broken Bow | OK | — | ◇ UNVERIFIED |
| OSOld South Wood Preserving, INC. | Summertown | TN | — | ◇ UNVERIFIED |
