“Kazakhstan has steadily risen to become the world’s No. 1 uranium producer, surpassing such nations as the United States, Canada, and Australia, which require more cleanup. Rather than employing miners to haul rock up to the surface, mine operators in Kazakhstan have embraced a newer – and generally cleaner – process by which a chemical solution is injected down a pipe to dissolve the underground uranium deposits and then is sucked back up to the surface. This in situ leach (ISL) method avoids making a mess above ground, but leaves toxic levels of heavy metals in the ground water.”

http://www.csmonitor.com/World/Asia-South-Central/2013/0828/The-cost-of-being-the-world-s-No.1-uranium-producer

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