| MUMetcan USA | Adrian | MI | — | ◇ UNVERIFIED |
| MRMetech Recycling | Gilroy | CA | — | ◇ UNVERIFIED |
| MSMetro Scrap Metals INC | North Little Rock | AR | — | ◇ UNVERIFIED |
| MBMicro-lite - Buffalo (handling Facility) | Buffalo | KS | — | ◇ UNVERIFIED |
| MLMicro-lite, L.l.c. | Buffalo | KS | — | ◇ UNVERIFIED |
| MUMicronized Ultra Tech INC | Richmond | CA | — | ◇ UNVERIFIED |
| MIMidwest Iron & Metal CO | Hutchinson | KS | — | ◇ UNVERIFIED |
| MPMidwest Perlite Company, Inc. | Appleton | WI | — | ◇ UNVERIFIED |
| MLM-i LLC - Amelia Grinding & Bulk Storage Facility | Amelia | LA | — | ◇ UNVERIFIED |
| MQMillville Quarry | Baltimore | MD | — | ◇ UNVERIFIED |
| MIMis INC | Surgoinsville | TN | — | ◇ UNVERIFIED |
| MSMi Swaco Greystone Barite Mine | Battle Mountain | NV | — | ◇ UNVERIFIED |
| MPMitsubishi Polycrstalline Silicon America CORP | Theodore | AL | — | ◇ UNVERIFIED |
| MZMitsui Zinc Powder | Monaca | PA | — | ◇ UNVERIFIED |
| MRMjd Resource INC. | Frisco | TX | — | ◇ UNVERIFIED |
 Mmc Materials INC | Memphis | TN | — | ◇ UNVERIFIED |
| MAModern Art Services | Long Island City | NY | — | ◇ UNVERIFIED |
| MSMonterey Sculpture Center | Sand City | CA | — | ◇ UNVERIFIED |
| MSMoreys Salvage & Glass | Windsor | CO | — | ◇ UNVERIFIED |
| MFMorrow Foundry | Coffeyville | KS | — | ◇ UNVERIFIED |
| MBMr. Butler | Fulshear | TX | — | ◇ UNVERIFIED |
| MCMri CORP Chandler Plt | Chandler | AZ | — | ◇ UNVERIFIED |
| MHMt Hope X274-113m | Bronx | NY | — | ◇ UNVERIFIED |
| MFMulti Flex Plating Co/collingdale | Collingdale | PA | — | ◇ UNVERIFIED |
| MMultiserv | Birmingham | AL | — | ◇ UNVERIFIED |
| M1Multiserv/plt 18 Steelton | Steelton | PA | — | ◇ UNVERIFIED |
| MKMurray Keystone Processing Inc/keystone Cleaning Plt | Indiana | PA | — | ◇ UNVERIFIED |
| NLNanocor LLC | Aberdeen | MS | — | ◇ UNVERIFIED |
| NANanshan America Advanced Aluminum Technologies | Lafayette | IN | — | ◇ UNVERIFIED |
| NCNational City Foundry | San Diego | CA | — | ◇ UNVERIFIED |
| NRNational Refining CORP | Orange | CA | — | ◇ UNVERIFIED |
| NSNatl Smelting & Refining CO | Commerce City | CO | — | ◇ UNVERIFIED |
| NUNemak USA INC. - Gateway | Sheboygan | WI | — | ◇ UNVERIFIED |
| NSNevada Slag, INC | Mcgill | NV | — | ◇ UNVERIFIED |
| NRNewell Recycling of San Antonio | San Antonio | TX | — | ◇ UNVERIFIED |
| NENew England Lead Burning Co, INC | San Leandro | CA | — | ◇ UNVERIFIED |
| NENew Enterprise Stone & Lime CO Inc/fairfield | Cumberland | PA | — | ◇ UNVERIFIED |
| NHNew Horizon Florida, INC Dba New Horizon Pm | Pinellas Park | FL | — | ◇ UNVERIFIED |
| NMNewton Mcdonald County Landfill | Neosho | MO | — | ◇ UNVERIFIED |
| NINl Industries | Pedricktown | NJ | — | ◇ UNVERIFIED |
| NMNoble Metal Services | Cranston | RI | — | ◇ UNVERIFIED |
| NFNon Ferrous Recycling | South Plainfield | NJ | — | ◇ UNVERIFIED |
| NRNoranda Recycling INC | San Jose | CA | — | ◇ UNVERIFIED |
| NPNorcal Perlite, Inc. | Bakersfield | CA | — | ◇ UNVERIFIED |
| NANorth American Recycling and Crushing LLC | Anaheim | CA | — | ◇ UNVERIFIED |
| NANorth American Recycling & Crushing, LLC. | Colton | CA | — | ◇ UNVERIFIED |
| NMNortheast Metal Processors, INC. | Plantersville | MS | — | ◇ UNVERIFIED |
| NSNortheast Solite Corporation | Mount Marion | NY | — | ◇ UNVERIFIED |
| NSNorth Star Water Treatment Facility | Grass Valley | CA | — | ◇ UNVERIFIED |
| NANorthwest Alloys INC | Addy | WA | — | ◇ UNVERIFIED |
