Maps showing locations of holes drilled in 1949 to 1956 by U.S. Geological Survey, Jo Dandy and Monogram Mesa areas, Bull Canyon district, Montrose County, Colorado
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Open-File Report↗
Geology topics
A. E. Flint
Publications and source records attributed to A. E. Flint.
Exploratory drilling for evidence of zinc and lead ore in Dubuque County, Iowa
No abstract available.
Iowa↗
Index maps of the Wisconsin-Illinois-Iowa lead-zinc mining district
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Open-File Report↗