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The Democratic Republic of the Congo has abundant reserves of diamonds, gold, coltan, copper, tantalite, wolframite, manganese and uranium.

The mine can produce more than 16 tons of wolframite, a rock containing tungsten, in a week, police say.

Add on conflict minerals such as cassiterite, gold, wolframite, cobalt and coltan from the Congo, plus the damage from huge pits and deep tunnels.

Conflict minerals include coltan, cassiterite, gold and wolframite, and while you may not be familiar with some of these, they are widely used in electronics.

The minerals are gold, cassiterite, wolframite and columbite-tantalite, also called coltan.