“Mining has a lot of impact,” Robinson said. “It is extremely destructive to extract metal from ore. It is usually leached out in chemical process, which leaves a high volume of toxic sludges and heavy metals. Because the global population is growing, demand for ore is growing.”
“Often mining is a primitive process – people using only their bare hands and bare feet, with no protection – about 14 million people around the world are at risk from mining,” Robinson told reporters.
“Today there is modern technical equipment for pollution control, but it is expensive, so it exists only in rich, developed countries,” he said.
http://ens-newswire.com/2012/10/23/worlds-worst-pollution-problems-2012/
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