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Bell Copper’s Perseverance Copper Porphyry Project – K-20 drill hole
Assay results from Bell Copper's K-20 drill hole, Perseverance Project, Kingman, Arizona
Living Superior, Arizona: The life and times of a copper mining town from 1930 to 1950
The life and times of a mining town, Superior, Arizona, during the Great Depression, WW II and post-War years.
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