U.S. Geological Survey

U.S. Geological Survey Geologic Investigations Series I-2735

Map Showing the Extent of Mining, Locations of Mine Shafts, Adits, Air Shafts, and Bedrock Faults, and Thickness of Overburden Above Abandoned Coal Mines in the Boulder-Weld Coal Field, Boulder, Weld, and Adams Counties, Colorado

Compiled by S.B. Roberts, J.L. Hynes, and C.L. Woodward

Version 1.0

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Map PDF file (3.3 MB)

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