Discharge of treated mine water caused a slope failure in June 2010, felling large trees and sending a significant amount of soil into the headwaters of South Nicholson Creek.
In May 2011, a large slope failure below the Buckhorn Mine sent a wall of mud and large trees flowing down Gold Bowl Creek.
Crown/Kinross moved waste rock onto liners. When mining was complete in 2015 & all waste rock was required to be underground, there was complete liner & the waste rock was no longer on the surface.
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