Many mine require tailings dams to prevent waste being washed into the rivers. Unethical miners can dispense with the dams, to save costs, resulting in massive pollution downstream. In other cases, the tailings dam can overflow, and even breach, during periods of heavy rain................................
There is no reason for a blanket ban on mining. However, the environmental impact of each proposed mine should be analyzed before permission to proceed is granted. Mining operators must be aware of the potential impacts of their operations and ensure minimum risk to the environment. The holes also spread a big germ to many parts of the world which soon gets the world polluted.
http://www.trivols.com/the-solution-to-mining-pollution-to-the-environment/
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