| Name | Country | Market Cap (US$) |
|---|
| LIONORE AUSTRALIA (WILDARA) NL | Australia | Private |
| Lionore Mining International Limited | Canada | Private |
| LIONORE MINING INTERNATIONAL LTD | Australia | Private |
| Lisungwe plc | United Kingdom | Private |
| Liuhe County Ma'an Country Pingshan Yi Mine | China | Private |
| Lodestar Holdings Inc. | United States | Private |
| Lohja Rudus Oy Ab | Finland | Private |
| LONGCLIFFE QUARRIES LTD | United Kingdom | Private |
| Longyear Global Holdings, Inc | United States | Private |
| Loraine Gold Mines Ltd. | South Africa | Private |
| Louvicourt Gold Mines Inc. | Canada | Private |
| LS-Nikko Copper Inc | South Korea | Private |
| Luck Stone Corporation | United States | Private |
| LUIS SANCHEZ DIEZ SA | Spain | Private |
| Lundin Netherlands B.V. | Netherlands | Private |
| Luossavaara-Kiirunavaara Ab | Sweden | Private |
| Luoyang Luanchuan Molybdenum Group Co., Ltd. | China | Private |
| LUSICAL - COMPANHIA LUSITANA DE CAL, S.A. | Portugal | Private |
| Luzenac America Inc. | United States | Private |
| Luzenac NV | Belgium | Private |
| LUZENAC VAL CHISONE SPA | Italy | Private |
| Lyndex Explorations Limited | Canada | Private |
| Lytton Minerals Ltd. | Canada | Private |
| M F de Brita Mineraçao e Cons Ltda | Brazil | Private |
| M.E.TE METALEFTIKI EMBORIKI TECHNIKI S.A. | Greece | Private |
| Madsen Gold Corporation | Canada | Private |
| MAFFEI SARDA SRL | Italy | Private |
| MAFFEI SPA | Italy | Private |
| Magneco/Metrel, Inc. | United States | Private |
| Magnesita S.A. | Brazil | Private |
| Magnesitas Navarras, S.A. | Spain | Private |
| Magnesium Corporation of America | United States | Private |
| Magnetic Minerals Ltd | Australia | Private |
| MAGTI ITALIA SPA | Italy | Private |
| Major Pontil Pty Ltd | Australia | Private |
| Mammoth Energy Group Inc | Canada | Private |
| Mamoré Mineraçao e Metalúrgia Ltda. | Brazil | Private |
| Marakand Minerals Limited | United Kingdom | Private |
| Maranda Mining Company (Pty) Ltd | South Africa | Private |
| Marathon Oil Canada Corporation | Canada | Private |
| Marcopper Mining Corporation | Philippines | Private |
| Marganets Ore Mining & Processing Intergrated Plant Open Joint S | Ukraine | Private |
| Marine Salt Trading Company SA | Belgium | Private |
| MARMI OROBICI GRANITI SPA | Italy | Private |
| MARMOL COMPAC SA | Spain | Private |
| MARMOLES BEMPE, S.L. | Spain | Private |
| Marsam Metais Sa Mineraçao Comércio e Exportaçao | Brazil | Private |
| Marshall Minerals Corporation | Canada | Private |
| Marshalls Mono Ltd | United Kingdom | Private |
| Martin Marietta Materials Southwest, Inc | United States | Private |
| MARUMI TORYO K.K. | Japan | Private |
| MARUWA KENZAISHA, Y.K. | Japan | Private |
| Matador Exploration Inc | Canada | Private |
| Material Service Resources Corp | United States | Private |
| Materias Primas Monterrey S.A. de CV | Mexico | Private |
| MATERIAUX ROUTIERS FRANCILIENS | France | Private |
| MATSURA KAIHATSU KOGYO K.K. | Japan | Private |
| Matthias Strobel Tief- und Straßenbau-Kieswerk-GmbH & Co. KG | Germany | Private |
| Mavuzi Resources Limited | Australia | Private |
| MAX BOGL & JOSEF KRYSL, stavebni firma, vyroba prefabrikatu a ka | Czech Republic | Private |
| Maximus Ventures Ltd. | Canada | Private |
| Maxit AB | Sweden | Private |
| maxit Oy Ab | Finland | Private |
| Mc George Contracting Co, Inc | United States | Private |
| MCARTHUR RIVER MINING PTY. LTD. | Australia | Private |
| McWatters Mining Inc. | Canada | Private |
| Media World Communications Ltd | Australia | Private |
| Meekatharra Minerals Ltd. | Australia | Private |
| Meichle & Mohr GmbH | Germany | Private |
| MEMC ELECTRONIC MATERIALS SPA | Italy | Private |
| Memphis Stone & Gravel Co | United States | Private |
| Meple SA | France | Private |
| Meridian Aggregates Company, A Limited Partnership | United States | Private |
| Meridian Gold Canada Inc | United States | Private |
| Meridian Gold Inc. | United States | Private |
| Meta Srl | Italy | Private |
| Metal Recovery Technologies, Inc. | United States | Private |
| Metallica Resources Inc. | Canada | Private |
| Metana Minerals Nl | Australia | Private |
| Métaux Billiton Canada Inc, Les | Canada | Private |
| Metorex International | Finland | Private |
| Metso USA | United States | Private |
| Mexgold Resources Inc. | Canada | Private |
| Mexicana de Cananea, S.A. de C.V. | Mexico | Private |
| Mexicana de Cananea, S.A. de C.V. | Mexico | Private |
| Mexicana De Cobre, S.A. De C.V. | Mexico | Private |
| Mg Rohstoffhandel Gmbh | Germany | Private |
| Mhangura Copper Mines Ltd | Zimbabwe | Private |
| MHI Mitteldeutsche Hartstein-Industrie GmbH | Germany | Private |
| Michelago Limited | Australia | Private |
| Micron Co.,Ltd. | Japan | Private |
| Microtherm NV | Belgium | Private |
| Midland Quarry Products Ltd | United Kingdom | Private |
| MIKHAILOVSKY GOK OAO | Russia | Private |
| Mill Services Corporation | United States | Private |
| Miller & Company | United States | Private |
| MIM Holdings Ltd | Australia | Private |
| Minas de San Luis, S.A. de C.V. | Mexico | Private |
| Minas San Luis, S.A. de C.V. | Mexico | Private |
| Minco, Inc. | United States | Private |
|
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