Demonstration of rock drilling holes to be loaded with explosives to blast rock into chunks for milling at Argo Gold Mine & Mill. Idaho Springs, CO.

Demonstration of rock drilling holes to be loaded with explosives to blast rock into chunks for milling at Argo Gold Mine & Mill. Idaho Springs, CO.
Photo by Jim Steinhart © 2012, all rights reserved. (Ref: COIS17)

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Idaho Springs, CO
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