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When prevention is not practical due to technical or economics
limitations then activities intended to mitigate the consequence of the
formation of acid rock drainage shall become the objective of
restoration work.
The metal leaching / acid rock drainage characteristics of waste rock
is a key component that, along with preliminary mine design, will be
the focus of technical work to be undertaken in 2006. Naturally occurring acid rock drainage has been around as long as
sulfide minerals, air, and water have, and anthropogenic AMD dates back
to at least the Middle Ages. |
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