THE VOICE OF THE CANADIAN

MINING INDUSTRY SINCE 1935

Guidelines for the Assessment of Alternatives for Mine Waste Disposal

It is expected that natural water bodies frequented by fish shall be avoided to the extent practicable for the long-term disposal of mine waste; and that mine waste shall be managed to ensure the long-term protection of Canada’s terrestrial and aquatic environment.

These guidelines describe the process that must be undertaken when a proponent is considering using a natural water body frequented by fish as a TIA such that a regulatory amendment to the MMER would be required. In the context of these guidelines, the term TIA refers to a natural water body frequented by fish into which deleterious substances (such as tailings, waste rock, low-grade ore, overburden, and any effluent that contains any concentration of the deleterious substances specified in the MMER, and of any pH) are disposed.

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