What type of mining is coltan mining considered?

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  • It depends on the specific deposit but coltan is generally mined from large open pits or smaller artisanal mines (by small scale miners using simple tools in the Democratic Republic of Congo & in Colombia) rather than from underground mines.

    The sudden rise in price in 2000 followed by the drop in the tantalum & niobium prices in 2005 have had a severe effect on production.

    For further details, look at the link below.

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