| MGMccash Glass LLC | Naples | FL | — | ◇ UNVERIFIED |
 Mcgrory Glass | West Deptford Twp | NJ | — | ◇ UNVERIFIED |
| MAMeggitt Aircraft Braking Systems CORP | Danville | KY | — | ◇ UNVERIFIED |
| MIMesser Industries - Closed | Greer | SC | — | ◇ UNVERIFIED |
| MFMetro Fluid Connectors | Fullerton | CA | — | ◇ UNVERIFIED |
| MMMetro Mailing Service INC Dba Metro Print and Mail Solutions | Sacramento | CA | — | ◇ UNVERIFIED |
| MGMid-American Glass, Inc. | Davenport | IA | — | ◇ UNVERIFIED |
 Midwest Hose & Specialty Inc/corry | Corry | PA | — | ◇ UNVERIFIED |
| MWMilgard Windows and Doors | Simi Valley | CA | — | ◇ UNVERIFIED |
 Minneapolis Glass CO | Minneapolis | MN | — | ◇ UNVERIFIED |
| MIModerustic INC | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| MCMoog Commercial Aircraft Group (plant 24) | East Aurora | NY | — | ◇ UNVERIFIED |
| MRMoon Roof Corporation of America | Roseville | MI | — | ◇ UNVERIFIED |
| MSMo Sci LLC | Rolla | MO | — | ◇ UNVERIFIED |
| MAMotion and Flow Control Products INC | Bakersfield | CA | — | ◇ UNVERIFIED |
| MFMRBBB Futures Glass LLC | Allentown | PA | — | ◇ UNVERIFIED |
| MGMR Glass Tempering LLC | Brooklyn | NY | — | ◇ UNVERIFIED |
| MWMunn Works, LLC | Mount Vernon | NY | — | ◇ UNVERIFIED |
| MMMurakami Manufacturing U.s.a., INC. | Finley | KY | — | ◇ UNVERIFIED |
| MSMy Shower Door | Fort Myers | FL | — | ◇ UNVERIFIED |
| NTNashville Tempered Glass Corporation | Hendersonville | TN | — | ◇ UNVERIFIED |
| NANdk America INC | Belvidere | IL | — | ◇ UNVERIFIED |
| NINewport Industrial Glass INC | Stanton | CA | — | ◇ UNVERIFIED |
| NFNikkin Flux Corporation | Edwardsville | IL | — | ◇ UNVERIFIED |
| NWNikolas Weinstein Studios, Inc | Long Island City | NY | — | ◇ UNVERIFIED |
| NWNikolas Weinstein Studios INC. | San Francisco | CA | — | ◇ UNVERIFIED |
| NRNordam Repair, Victorville | Victorville | CA | — | ◇ UNVERIFIED |
| NPNorthern Pacific Airways, INC. | Ontario | CA | — | ◇ UNVERIFIED |
| NPNorth Penn - Area 7 Superfund Site | North Wales | PA | — | ◇ UNVERIFIED |
| NHNorthshore Hydraulics, LLC | Tickfaw | LA | — | ◇ UNVERIFIED |
| NTNozzle Tech USA, LLC | Springville | UT | — | ◇ UNVERIFIED |
| NTNy Tempering LLC | Plainview | NY | — | ◇ UNVERIFIED |
| NGNzilani Glass Conservation INC | Oakland | CA | — | ◇ UNVERIFIED |
| OSO'brien Stained Glass CO INC | Rollingstone | MN | — | ◇ UNVERIFIED |
| OSOceana Stained Glass | San Mateo | CA | — | ◇ UNVERIFIED |
| OGOcean Glass & Mirror Co., INC. | Lowell | MA | — | ◇ UNVERIFIED |
| OSOceanic Systems INC | Dallas | TX | — | ◇ UNVERIFIED |
| OPOgden Painting Facility | Ogden | UT | — | ◇ UNVERIFIED |
| OMOhio Mirror Technologies, INC. | Paulding | OH | — | ◇ UNVERIFIED |
| OGOlathe Glass Company, Inc. | Olathe | KS | — | ◇ UNVERIFIED |
| OBOldcastle Buildingenvelope | Tampa | FL | — | ◇ UNVERIFIED |
| OBOldcastle Building Envelope INC | Albertville | MN | — | ◇ UNVERIFIED |
| OBOldcastle Buildingenvelope, INC North | North Miami Beach | FL | — | ◇ UNVERIFIED |
| OBOldcastle Buildingenvelope INC South | Miami | FL | — | ◇ UNVERIFIED |
| OTOld Town Fiberglass Dba Fiberglass Fabri | Orange | CA | — | ◇ UNVERIFIED |
| OPOlmsted Products CO. | Traverse City | MI | — | ◇ UNVERIFIED |
| OGOregon Glass Company | Wilsonville | OR | — | ◇ UNVERIFIED |
| OTOver the Mountain Glass, INC. | Pelham | AL | — | ◇ UNVERIFIED |
| PAPall Aerospace | Pinellas Park | FL | — | ◇ UNVERIFIED |
| PTParagon Tempered Glass, LLC | Antwerp | OH | — | ◇ UNVERIFIED |
