Synonymer & Anagram | Engelska ordet COLTAN

Exempel på hur man kan använda COLTAN i en mening

• It is a group 5 element, along with vanadium and niobium, and it always occurs in geologic sources together with the chemically similar niobium, mainly in the mineral groups tantalite, columbite and coltan.
• Other conflict minerals being illicitly exported from the Congo include tungsten, tin, cassiterite, and coltan (which provides the tantalum for mobile phones, and is also said to be directly sustaining the conflict).
• COMEBU (Comptoirs miniers des exploitations minières du Burundi) was granted a 25-year mining license to exploit coltan and cassiterite in the Commune of Kabarore, Kayanza Province, and cassiterite in Murehe, Kirundo Province at.
• In Nigeria, pegmatite deposits of coltan are frequently also the source of several precious and semi-precious stones such as beryl, aquamarine, and tourmaline.
• The TIC has created a process to deliver conflict-free coltan from Africa to refinery sites, called ITSCI, by using independent third-party companies to assess the mining sites and determine whether or not they violate of human rights and through working with RMI to audit them smelters and refiners that purchase material.
• The 1955 cumulative production reached 54 tonnes of gold ingot and 22,000 tonnes of cassiterite or cassiterite mixed with wolframite or coltan.
• Comptoirs miniers des exploitations minières du Burundi, or COMEBU, is a private enterprise that mines coltan and other minerals.

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