| MTMetromedia Technologies - Glendale | Glendale | CA | — | ◇ UNVERIFIED |
| MAMetropolis Airport | Metropolis | IL | — | ◇ UNVERIFIED |
| MPMetropolitan Pier & Exposition Authority | Chicago | IL | — | ◇ UNVERIFIED |
| MMMeyer Materials CO | Crystal Lake | IL | — | ◇ UNVERIFIED |
| MAMicrotron Abrasives, INC. | Pineville | NC | — | ◇ UNVERIFIED |
| MAMid America Sand & Gravel CO | Champaign | IL | — | ◇ UNVERIFIED |
| MAMid America Sand & Gravel CO | Mahomet | IL | — | ◇ UNVERIFIED |
| MRMiddleboro Recycling | Middleborough | MA | — | ◇ UNVERIFIED |
| MCMid-lakes Corporation | Knoxville | TN | — | ◇ UNVERIFIED |
| MAMidway Airport Amc Buildings | Chicago | IL | — | ◇ UNVERIFIED |
| MCMidwest Cement Products | Woosung | IL | — | ◇ UNVERIFIED |
| MEMidwest Electronic | Ellsworth | IL | — | ◇ UNVERIFIED |
| MRMidwest Rem Enterprises INC | Chicago | IL | — | ◇ UNVERIFIED |
| MSMidwest Sanitary Service INC | Wood River | IL | — | ◇ UNVERIFIED |
| MSMidwest Soil Remediation | Lockport | IL | — | ◇ UNVERIFIED |
| MFMike Fuhrman, Village President | Waynesville | IL | — | ◇ UNVERIFIED |
| MRMilam Recycling & Disposal | East Saint Louis | IL | — | ◇ UNVERIFIED |
| MCMilliken & CO Duncan M Stewart Plant | Lagrange | GA | — | ◇ UNVERIFIED |
| MEMilliken Excelsior | Union | SC | — | ◇ UNVERIFIED |
| MPMinden Plant | Minden | NV | — | ◇ UNVERIFIED |
| MMMinee Monesse Golf Course | Momence | IL | — | ◇ UNVERIFIED |
 Mini Systems Incorporated | Plainville | MA | — | ◇ UNVERIFIED |
| MVMinton Ventures, LLC | Lenoir | NC | — | ◇ UNVERIFIED |
| MMMissouri Meerschaum Company | Washington | MO | — | ◇ UNVERIFIED |
| MLMixonsite LLC | Chicago | IL | — | ◇ UNVERIFIED |
| MAMizzonis Auto Body INC. | Lodi | NJ | — | ◇ UNVERIFIED |
| MLM & L Oil CO INC | Cisne | IL | — | ◇ UNVERIFIED |
| MIModernistic INC | Shoreview | MN | — | ◇ UNVERIFIED |
| MIMohawk Industries | Dublin | GA | — | ◇ UNVERIFIED |
| MIMohawk Industries INC | Calhoun | GA | — | ◇ UNVERIFIED |
| MIMohawk Industries, INC. - Karastan Eden Rug Mill | Eden | NC | — | ◇ UNVERIFIED |
| MIMohawk Industries - Landrum Mills | Landrum | SC | — | ◇ UNVERIFIED |
| MIMohawk Industries Lyerly Plant | Lyerly | GA | — | ◇ UNVERIFIED |
| MHMontec Hydraulics/carmichaels | Carmichaels | PA | — | ◇ UNVERIFIED |
| MPMoore Painting CO | Alton | IL | — | ◇ UNVERIFIED |
| MTMoorestown Twp Water Pollution Control Plant | Moorestown | NJ | — | ◇ UNVERIFIED |
| MCMorris Community Landfill | Morris | IL | — | ◇ UNVERIFIED |
| MGMorrison Grease Recycling INC | Morrison | IL | — | ◇ UNVERIFIED |
| MSMorton Supplies INC | Morton | IL | — | ◇ UNVERIFIED |
| MVMount Vernon Mills Lafrance | La France | SC | — | ◇ UNVERIFIED |
| MPMrc Polymers INC | Chicago | IL | — | ◇ UNVERIFIED |
| MFMr. Foamer, INC. | Tamarac | FL | — | ◇ UNVERIFIED |
| MRM&r Rubber CO | Belvidere | IL | — | ◇ UNVERIFIED |
| MPMsw Print & Imaging | Ypsilanti | MI | — | ◇ UNVERIFIED |
| MPMt Prospect Mail Pharmacy | Mount Prospect | IL | — | ◇ UNVERIFIED |
| MCMulch Center the | North Chicago | IL | — | ◇ UNVERIFIED |
| MCMulti / County Landfill | Villa Grove | IL | — | ◇ UNVERIFIED |
 Mustang Survival Mfg., INC. | Elizabeth | WV | — | ◇ UNVERIFIED |
| MSMyatts Shirts & Sports | Nampa | ID | — | ◇ UNVERIFIED |
| NPNashville Plastic Products | Nashville | TN | — | ◇ UNVERIFIED |
| NLNathan Lagin CO INC | Westbury | NY | — | ◇ UNVERIFIED |
| NCNational Chemical | Plainfield | IL | — | ◇ UNVERIFIED |
| NPNational Posters Inc., Digital Division | Chattanooga | TN | — | ◇ UNVERIFIED |
| NSNational Scale Technology | Huntsville | AL | — | ◇ UNVERIFIED |
| NTNative Textiles | Glens Falls | NY | — | ◇ UNVERIFIED |
| NENatural Environmental Protection | Pomona | CA | — | ◇ UNVERIFIED |
| NGNatural Gas Pipeline CO of America | Chicago Heights | IL | — | ◇ UNVERIFIED |
| NGNatural Gas Pipeline CO Station 206a | Altamont | IL | — | ◇ UNVERIFIED |
| NDNc Dps - Johnston Paint Plant | Smithfield | NC | — | ◇ UNVERIFIED |
| NSNcp Solutions Llc-birmingham | Birmingham | AL | — | ◇ UNVERIFIED |
| NHNelson Harkins Industries | Chicago | IL | — | ◇ UNVERIFIED |
| NNNelson Name Plate CO | Los Angeles | CA | — | ◇ UNVERIFIED |
| NCNeri Contractors & Excavators INC | Lake in the Hills | IL | — | ◇ UNVERIFIED |
| NCNestle Clinical Nutrition | Hopkins Park | IL | — | ◇ UNVERIFIED |
| NCNewell Companies | Freeport | IL | — | ◇ UNVERIFIED |
| NPNewell Products | Waynesboro | MS | — | ◇ UNVERIFIED |
| NENew England Tele | Lawrence | MA | — | ◇ UNVERIFIED |
| NYNew York Wire Co/textile Facility | Mount Wolf | PA | — | ◇ UNVERIFIED |
| NHN Henry & Son INC | Chicago | IL | — | ◇ UNVERIFIED |
| NCNichem CORP | Chicago | IL | — | ◇ UNVERIFIED |
| NLN L B CORP | Wixom | MI | — | ◇ UNVERIFIED |
| NTNoah's Trading Post | Rockford | IL | — | ◇ UNVERIFIED |
| NCNorco Cleaners INC | Dolton | IL | — | ◇ UNVERIFIED |
| NINormic Industries INC | Traverse City | MI | — | ◇ UNVERIFIED |
| NANorth American Fastener CORP | Bridgeport | WV | — | ◇ UNVERIFIED |
| NANorth American Sterilization & Packaging CO INC | Hardyston Twp | NJ | — | ◇ UNVERIFIED |
| NANorth American Stevedoring CO (formerly Ceres) | Chicago | IL | — | ◇ UNVERIFIED |
| NBNorth Bergen Piece Dye Works I | North Bergen | NJ | — | ◇ UNVERIFIED |
| NENorthern Enterprises INC | Chisago City | MN | — | ◇ UNVERIFIED |
| NSNorth Sails Nevada LLC | Minden | NV | — | ◇ UNVERIFIED |
| NVNorwalk Vault | Saint Louis | MO | — | ◇ UNVERIFIED |
 Novamet Specialty Products CORP | Wyckoff | NJ | — | ◇ UNVERIFIED |
| NINsc International | Hot Springs | AR | — | ◇ UNVERIFIED |
| NBNtn Bearing | Des Plaines | IL | — | ◇ UNVERIFIED |
| NNtt/verio | Chicago | IL | — | ◇ UNVERIFIED |
| NLNxtnano LLC / Newco Nano Facility | Claremore | OK | — | ◇ UNVERIFIED |
| ODOakfield Development | Rockton | IL | — | ◇ UNVERIFIED |
| OEOakley Enterprises INC | Morton Grove | IL | — | ◇ UNVERIFIED |
| OPOak Park Village of | Oak Park | IL | — | ◇ UNVERIFIED |
| OROak River Cleaners | Oak Park | IL | — | ◇ UNVERIFIED |
| OROak River Cleaners | Westchester | IL | — | ◇ UNVERIFIED |
| OLOctave Labs LLC | Pleasant Hill | OR | — | ◇ UNVERIFIED |
| OLOctave Labs LLC | Springfield | OR | — | ◇ UNVERIFIED |
| OOldcastle | Elmer | NJ | — | ◇ UNVERIFIED |
| OSOld School Market INC | Sullivan | IL | — | ◇ UNVERIFIED |
| OGOlen G. Parkhill Owner of Kendallwood Estates | Mahomet | IL | — | ◇ UNVERIFIED |
| OAO'mara Ag Services INC | Des Moines | IA | — | ◇ UNVERIFIED |
| ODOmega Demolition CORP | Rosemont | IL | — | ◇ UNVERIFIED |
| OIOneita Industries Andrews Textile Plant | Andrews | SC | — | ◇ UNVERIFIED |
| OGOptima Graphics-fenton | Fenton | MO | — | ◇ UNVERIFIED |
