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71	UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C[removed]______________________________________ FORM SD Add to Reading List Source URL: grace.investorhq.businesswire.com Language: English - Date: 2014-06-05 09:13:52 Mining in Rwanda Due diligence Natural resources Crystallography Matter Wolframite Mining Mining in the Democratic Republic of the Congo Conflict minerals Minerals
72	TUNGSTEN By Kim B. Shedd Domestic survey data and tables were prepared by Heather A. Geissler, statistical assistant, and the world production table was prepared by Glenn J. Wallace, international data coordinator. Tungs Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2004-09-14 13:55:11 Tungsten Cantung Mine Wolframite Molybdenum Copper-tungsten Ammonium paratungstate Ore Cemented carbide Tungstate Chemistry Matter Tungsten compounds
73 $Chemical elements / Refractory metals / Transition metals / Carbides / Tungsten / Cantung Mine / Wolframite / Cemented carbide / Molybdenum / Chemistry / Matter / Tungsten compounds$	2005 Minerals Yearbook Tungsten U.S. Department of the Interior U.S. Geological Survey Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2007-07-03 10:34:38 Chemical elements Refractory metals Transition metals Carbides Tungsten Cantung Mine Wolframite Cemented carbide Molybdenum Chemistry Matter Tungsten compounds
74 $Chemical elements / Refractory metals / Transition metals / Tungsten / Cantung Mine / Molybdenum / Wolframite / Ore / Ferroalloy / Chemistry / Matter / Tungsten compounds$	TUNGSTEN By Kim B. Shedd Domestic survey data and tables were prepared by Heather A. Geissler, statistical assistant, and the world production table was prepared by Glenn J. Wallace, international data coordinator. Tungs Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2002-10-22 16:56:08 Chemical elements Refractory metals Transition metals Tungsten Cantung Mine Molybdenum Wolframite Ore Ferroalloy Chemistry Matter Tungsten compounds
75 $Refractory metals / Transition metals / Tungsten compounds / Tungsten / Metals / Global Tungsten & Powders Corp. / Wolframite / Ore / Cantung Mine / Chemistry / Matter / Chemical elements$	2010 Minerals Yearbook TUNGSTEN [ADVANCE RELEASE] U.S. Department of the Interior U.S. Geological Survey Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2012-02-28 09:49:08 Refractory metals Transition metals Tungsten compounds Tungsten Metals Global Tungsten & Powders Corp. Wolframite Ore Cantung Mine Chemistry Matter Chemical elements
76 $Chemical elements / Refractory metals / Transition metals / Tungsten / Hemerdon Mine / Korea Tungsten Company / Global Tungsten & Powders Corp. / Wolframite / Cantung Mine / Matter / Chemistry / Tungsten compounds$	2011 Minerals Yearbook TUNGSTEN [ADVANCE RELEASE] U.S. Department of the Interior U.S. Geological Survey Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2013-04-11 15:26:04 Chemical elements Refractory metals Transition metals Tungsten Hemerdon Mine Korea Tungsten Company Global Tungsten & Powders Corp. Wolframite Cantung Mine Matter Chemistry Tungsten compounds
77	TUNGSTEN By Earle B. Amey and Kim B. Shedd Tungsten’s unique high-temperature properties are beneficial in the production of numerous end-use items. The high melting point, high density, good corrosion resistance, good Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 1997-11-14 07:16:42 Chemical elements Transition metals Carbides Superhard materials Tungsten Hemerdon Mine Cantung Mine Incandescent light bulb Wolframite Chemistry Matter Tungsten compounds
78 $Chemical elements / Refractory metals / Transition metals / Tungsten / Metals / Wolframite / Cantung Mine / Ore / Molybdenum / Chemistry / Matter / Tungsten compounds$	2007 Minerals Yearbook TUNGSTEN U.S. Department of the Interior U.S. Geological Survey Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2013-06-21 12:41:56 Chemical elements Refractory metals Transition metals Tungsten Metals Wolframite Cantung Mine Ore Molybdenum Chemistry Matter Tungsten compounds
79 $Chemical elements / Refractory metals / Transition metals / Carbides / Tungsten / Wolframite / Cantung Mine / Tungstate / Molybdenum / Chemistry / Matter / Tungsten compounds$	2006 Minerals Yearbook TUNGSTEN U.S. Department of the Interior U.S. Geological Survey Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2008-04-01 14:59:47 Chemical elements Refractory metals Transition metals Carbides Tungsten Wolframite Cantung Mine Tungstate Molybdenum Chemistry Matter Tungsten compounds
80 $Tungsten / Chemical elements / Refractory metals / Transition metals / Carbides / Cantung Mine / Wolframite / Molybdenum / Tungstate / Chemistry / Matter / Tungsten compounds$	Tungsten By Kim B. Shedd Domestic survey data and tables were prepared by Amy C. Tolcin, statistical assistant, and the world production table was prepared by Glenn J. Wallace, international data coordinator. Tungsten is Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2011-06-15 12:17:56 Tungsten Chemical elements Refractory metals Transition metals Carbides Cantung Mine Wolframite Molybdenum Tungstate Chemistry Matter Tungsten compounds

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