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Coltan - Wikipedia
Coltan (short for columbite–tantalites and known industrially as tantalite) ... and the government in Congo) can use them to their own benefit.learn more
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The term "conflict minerals" is defined as columbite ... Section 1502 of that act addresses the international trade and use of Conflict Minerals. ... we don 't ...learn more
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Columbite - Wikipedia
Columbite, also called niobite, niobite-tantalite and columbate [(Fe, Mn)Nb 2 O 6], is a black mineral group that is an ore of niobium. It has a submetallic luster ...learn more
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Columbite Tantalite: a film that fuses Congo's past and ...
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Columbite | Definition of Columbite by Merriam-Webster
Define columbite: a black mineral consisting mostly of iron and niobiumlearn more
Columbite-tantalite (COLTAN) > ENGINEERING
Can We Engineer Clean Drinking Water? ... COLTAN (Columbite-Tantalite) is a dull metallic ore found in major quantities in the eastern areas of Congo.learn more
The Many Uses of Gold - U.S. Global Investors
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can or could | LearnEnglish - British Council
Possibility. We use the modal can to make general statements about what is possible: It can be very cold in winter. (= It is sometimes very cold in winter)learn more
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What is Coltan? - Global Policy Forum
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