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 Photo 5. Channelized tailings behind breached Mike Horse Dam. View is from dam site looking up reser\oir. June 23. 1Q75. Photo 6. Confluence of Anaconda Creek (clear water) and Beartrap Creek (gray water) below Mike Horse Dam. June 23. 1975. A-67

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