| MMMajesty Marble and Granite, INC. | Philadelphia | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MMMajesty Marble and Granite, INC. | Aston | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MMManley Monuments | Lincoln | IL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MLMansfield, LLC Dba the Stone Outlet | Boise | ID | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MAMarble and Granite Castle, INC. | Lake Park | FL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MAMarble and Granite International, INC. | Waltham | MA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MAMarble and Granite Pro | Peabody | MA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MBMarble Bridge INC | Naples | FL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MDMarble Design Concepts INC | Franklin | TN | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MGMarble & Granite Remnants & Restoration LLC | Portland | OR | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MEMarbleman Enterprises | San Lorenzo | CA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MMMarble Mantel, INC. | Rockville | MD | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MMMarble Masters, Stone Care Specialists, INC. | Jacksonville | FL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MMMarble Mountain Creations | Rome | GA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MPMarble & Polish, INC. | Malden | MA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MSMarble Shop INC | Pittsburg | CA | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| MVMarble Ventures, INC. | Ogden | UT | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MWMarble Works of Pensacola, INC. | Pensacola | FL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MPMarc Prause and Jessica Prause | Carson City | NV | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MCMarion Cultured Marble, Incorporated Dba Wilson Ma | Marion | NC | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MHMarmol Hawaii INC. | Honolulu | HI | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MOMarquardt Outdoors, Llcdba Davis Tent an D Awning | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MSMartus Stone, LLC. | Elkhart | TX | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MLMarvin L Walker & Assoc | Norcross | GA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MPMaryland Place Holder 15 | Elkridge | MD | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MSMaryland Style Marble & Granite, INC | Edgewater | MD | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MMMaryville Monument LLC | Maryville | TN | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MSMasonville Stone | Masonville | NY | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MIMass-granite, INC. | Acton | MA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MMMaster Marble INC Holden | Holden | MO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MSMaster Stone, LLC | Sheridan | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MSMaster Stone Plus, INC | Orlando | FL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MZmatrix z llc | Fort Lauderdale | FL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MZmatrix z llc | Fort Lauderdale | FL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
 Matthews International Corporation | Whittier | CA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MPMatzke Properties LAX, LLC | La Crosse | WI | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MMMaurice Moore Memorials | Chicago Ridge | IL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MSMcfarren Slate | Granville | NY | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MMMediterranean Marble of the Gulf Coast | Naples | FL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MGMega Granite & Marble, INC. | Newnan | GA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MIMegastone, Inc. | South Easton | MA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MCMEM Co., LLC | Pearl River | NY | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MSMeno Stone CO. INC. | Lemont | IL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MMMerlino Marble and Granite, INC. | Cape May Court House | NJ | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MTMesa Tile & Stone, INC. | Boise | ID | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MSMeshoppen Stone INC. | Meshoppen | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MGMetro Granite, LLC | Oklahoma City | OK | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MGMetro Granite & Marble INC | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MMMetro Marble & Granite, LLC | Columbia | MO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MLMfi, LLC | Winterset | IA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
