Mines in upper Ontario Canyon, Ontario mine in middle ground, shaft No. 2 at left, shaft No. 3 at right, Wabash shaft in center. In background Naildriver shaft at right, New York shaft at left. Courtesy U.S. Geological Survey. http://www.usgs.gov
This photograph is by carnkie and was uploaded December 4th 2009. © carnkie please do not copy or distribute without prior express permission.
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