Effects of the June, 1975 Mike Horse mine tailings dam failure on water quality and aquatic resources of the Upper Blackfoot River, Montana effectsofjune19700montrich Year: 1997 Figure 1. Total number of bottom fauna found at Pop's Place and Flesh before and after Mike Horse Dam failure. er 1971 1972 OFIesher □ Pop's Place 1975 Figure 2. 600 Average number of bottom fauna per square foot at Pop's place and Flesher before and after Mike Horse Dam failure.

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