| MJMcguire Johns Holdings INC. | Elgin | IL | — | ◇ UNVERIFIED |
| MMMcintyre Manufacturing Group, INC. | Thomasville | NC | — | ◇ UNVERIFIED |
| MMMcintyre Metals | Thomasville | NC | — | ◇ UNVERIFIED |
| MMMckinzey Metal Works, INC. | Lake Charles | LA | — | ◇ UNVERIFIED |
| MWMcLaughlin Waste Equipment Inc. | Lockeford | CA | — | ◇ UNVERIFIED |
| MTMclendon Trailers, LLC | Phenix City | AL | — | ◇ UNVERIFIED |
| MTMclendon Trailers, LLC | Phenix City | AL | — | ◇ UNVERIFIED |
| MSMcmahno Steel CO | Chula Vista | CA | — | ◇ UNVERIFIED |
| MSMcManus Specialized Sheet Metal Works, Inc. | Milton | NY | — | ◇ UNVERIFIED |
| MCMcm Corporation of Oneida | Oneida | TN | — | ◇ UNVERIFIED |
| MFMcm Fixture Company, INC Dba Mcm Stainless Fabricating INC | Hazel Park | MI | — | ◇ UNVERIFIED |
| MPMcNic Properties LLC | Middleton | ID | — | ◇ UNVERIFIED |
| MIMcpherson Implement, Incorporated | Norman | OK | — | ◇ UNVERIFIED |
| MIMct Industries - Bernalillo Plant | Bernalillo | NM | — | ◇ UNVERIFIED |
| MSMct Sheet Metal | Beaumont | TX | — | ◇ UNVERIFIED |
| MSMct Sheetmetal, INC. | Lafayette | LA | — | ◇ UNVERIFIED |
| MSMcwhirter Steel | Lancaster | CA | — | ◇ UNVERIFIED |
| MHMddh Holdings, LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| MMMd Machine INC | Rogers | MN | — | ◇ UNVERIFIED |
| MMMeade Metals, Inc. | Elizabethtown | KY | — | ◇ UNVERIFIED |
| MGMec General Construction INC. | Brooklyn | NY | — | ◇ UNVERIFIED |
| MGMec General Construction INC. | Brooklyn | NY | — | ◇ UNVERIFIED |
| MOMech One, INC. | San Diego | CA | — | ◇ UNVERIFIED |
| MIMec INC. | Atkins | VA | — | ◇ UNVERIFIED |
| MIMec INC. | Wayland | MI | — | ◇ UNVERIFIED |
| MIMec INC. | Byron Center | MI | — | ◇ UNVERIFIED |
| MMMedalist Mfg. INC. | Pella | IA | — | ◇ UNVERIFIED |
| MBMedia Blast & Abrasives INC | Brea | CA | — | ◇ UNVERIFIED |
| MMMedieval Metalwerx, LLC | Mayer | MN | — | ◇ UNVERIFIED |
| MFMedway Flower LLC | Medway | MA | — | ◇ UNVERIFIED |
| MMMeeks Metal Works INC | Portland | OR | — | ◇ UNVERIFIED |
| MMMega Mechanical Services, LLC | Glastonbury | CT | — | ◇ UNVERIFIED |
| MMMeiers Modern Metals, LLC | Portland | OR | — | ◇ UNVERIFIED |
| MCMel Cor Sheet Metal, INC | Lyons | IL | — | ◇ UNVERIFIED |
| MMMeldrum Mechanical Services, INC. | Toledo | OH | — | ◇ UNVERIFIED |
| MMMelfred Manufacturing Company, INC. | Pittsburgh | PA | — | ◇ UNVERIFIED |
| MEMellinger Engineering Group, LLC | Sonoma | CA | — | ◇ UNVERIFIED |
| M2Mello 212 LLC | Northlake | TX | — | ◇ UNVERIFIED |
| MPMelting Point Welding & Fabrication, Inc. | Killingly | CT | — | ◇ UNVERIFIED |
| MBMelvin Baltodano | Ontario | CA | — | ◇ UNVERIFIED |
| MWMelvin Wrought Iron & Ornamental | Ontario | CA | — | ◇ UNVERIFIED |
| MCMemphis Can Company* | Memphis | TN | — | ◇ UNVERIFIED |
| MSMendel Steel & Ornamental Iron Company | Bethel Park | PA | — | ◇ UNVERIFIED |
| MOMendoza's Ornamental Iron | Fullerton | CA | — | ◇ UNVERIFIED |
| MOMen of Steel Enterprises, LLC | Bensalem | PA | — | ◇ UNVERIFIED |
| M1Merchant 1 Manufacturing LLC | Reidsville | NC | — | ◇ UNVERIFIED |
| MMMerchants Metals, LLC | Jacksonville | FL | — | ◇ UNVERIFIED |
| MMMerchant's Moving & Storage Corporation | Yoakum | TX | — | ◇ UNVERIFIED |
| MMMercury Metal | Eugene | OR | — | ◇ UNVERIFIED |
| MMMercury Metals | Watsonville | CA | — | ◇ UNVERIFIED |
| MMMercury Metalworks, LLC | Washington | PA | — | ◇ UNVERIFIED |
| MMMercury Minnesota INC | Faribault | MN | — | ◇ UNVERIFIED |
| MPMerge Properties, LLC | Roca | NE | — | ◇ UNVERIFIED |
| MEMeribel Enterprises LLC Dba Atlas Manufacturing | Minneapolis | MN | — | ◇ UNVERIFIED |
| MCMerrimack County Customs, LLC. | Bradford | NH | — | ◇ UNVERIFIED |
| MIMestek INC | Florence | KY | — | ◇ UNVERIFIED |
| MIMestek, Incorporated | Wyalusing | PA | — | ◇ UNVERIFIED |
| MDMeta Designs, LLC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| MFMeta Fab | Hillsboro | OR | — | ◇ UNVERIFIED |
| MAMetal Air Ironworks, INC. | Chico | CA | — | ◇ UNVERIFIED |
| MAMetal Air Products, INC. | Las Vegas | NV | — | ◇ UNVERIFIED |
| MAMetal Alliance Inc | Huntingdon Valley | PA | — | ◇ UNVERIFIED |
| MAMetal Arts Engravers INC | Shawnee | KS | — | ◇ UNVERIFIED |
| MBMetal Benders | Salisbury | NC | — | ◇ UNVERIFIED |
| MBMetal Benders, INC. | Hope Hull | AL | — | ◇ UNVERIFIED |
| MBMetal Bending Corporation | Anaheim | CA | — | ◇ UNVERIFIED |
| MBMetal Bending Corporation | Orange | CA | — | ◇ UNVERIFIED |
| MBMetal Boutique, LLC | Dallas | TX | — | ◇ UNVERIFIED |
| MCMetal Cleaning and Fininshing | Tulsa | OK | — | ◇ UNVERIFIED |
| MCMetal Concepts Az LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| MCMetal Concepts LLC | Cypress | TX | — | ◇ UNVERIFIED |
| MCMetal Container Fabrication Faclty | Oklahoma City | OK | — | ◇ UNVERIFIED |
| MCMetal Culverts INC | Oakland | MN | — | ◇ UNVERIFIED |
 Metal Culverts INC. | Jefferson City | MO | — | ◇ UNVERIFIED |
| MEMetal Equipment of Pr CORP | Catano | PR | — | ◇ UNVERIFIED |
| MIMetal-era, INC. | Waukesha | WI | — | ◇ UNVERIFIED |
| MIMetalfab, INC. | San Antonio | FL | — | ◇ UNVERIFIED |
| MFMetal Force, INC. | Roy | UT | — | ◇ UNVERIFIED |
| MIMetal Impressions, Inc. | Pittsboro | NC | — | ◇ UNVERIFIED |
| MIMetal Impressions INC | Sanford | NC | — | ◇ UNVERIFIED |
| MIMetal Innovations, Inc. | Chatsworth | CA | — | ◇ UNVERIFIED |
| MLMetal Line Fabrication, INC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| MCMetal-link CORP. | Fond Du Lac | WI | — | ◇ UNVERIFIED |
 Metal Machining Co., INC | Dorado | PR | — | ◇ UNVERIFIED |
| MMMetal Magic | Waynesboro | VA | — | ◇ UNVERIFIED |
| MMMetal Merchants of Michigan INC | Rochester Hills | MI | — | ◇ UNVERIFIED |
| MMMetal Militia, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| MMMetal Moulding Corporation | Madison | TN | — | ◇ UNVERIFIED |
| MMMetal Movers | Miami | FL | — | ◇ UNVERIFIED |
| MIMetalogic Industries LLC | Dudley | MA | — | ◇ UNVERIFIED |
| MOMetal One LLC | Lees Summit | MO | — | ◇ UNVERIFIED |
| MOMetal Ops LLC | Tampa | FL | — | ◇ UNVERIFIED |
| MPMetal Panels INC. | Kansas City | KS | — | ◇ UNVERIFIED |
| MPMetal Plus LLC | Grand Rapids | MI | — | ◇ UNVERIFIED |
 Metal Products Co, Lc | Marianna | FL | — | ◇ UNVERIFIED |
| MIMetalrite, INC. | Richardson | TX | — | ◇ UNVERIFIED |
| MRMetal Roofing Solutions LLC | Wheat Ridge | CO | — | ◇ UNVERIFIED |
| MSMetal Sales Manufacturing Corporation | Detroit Lakes | MN | — | ◇ UNVERIFIED |
| MSMetal Sales Manufacturing Corporation | Otsego | MN | — | ◇ UNVERIFIED |
| MSMetal Sales Manufacturing Corporation | New Albany | IN | — | ◇ UNVERIFIED |
