Coal entry at Harvey Gap, exposure of the coals in the Grand Hogback, field. Garfield County, Colorado.
Dates
Date Taken
1906
Summary
Coal entry at Harvey Gap, exposure of the coals in the Grand Hogback, field. Garfield County, Colorado. 1906. Plate 12-A in U.S. Geological Survey. Bulletin 415. 1910.
Summary
Coal entry at Harvey Gap, exposure of the coals in the Grand Hogback, field. Garfield County, Colorado. 1906. Plate 12-A in U.S. Geological Survey. Bulletin 415. 1910.
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