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Sealing off Grand Canyon National Park history, one mine shaft at a time
Grant Martin, Cronkite News Service//November 24, 2010//[read_meter]
Sealing off Grand Canyon National Park history, one mine shaft at a time
Grant Martin, Cronkite News Service//November 24, 2010//[read_meter]
[caption id="attachment_31796" align="alignleft" width="300" caption="Keith Schoeman, director of an effort to block access to old minesin an area of Grand Canyon National Park, stands next to what had been a...
