coltan mining and ethics
Coltan mining and ethics WikiMili, The Best Wikipedia Reader. Jan 21, 2020· Coltan mining and ethics Last updated January 21, 2020. Coltan is the colloquial name for the mineral columbite-tantalum ("col-tan"); it is sometimes incorrectly used as shorthand for tantalite, a metallic ore from which the very similar elements niobium, also known as columbium, and tantalum are extracted.