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GeoKansas--Geotopics--Lead and Zinc Mining. Lead and zinc deposits in Kansas occur within the region called the Ozark ... Lead and Zinc Mining in the Dubuque Area ...
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Lead and Zinc Mining in the Dubuque Area ... Encyclopedia Dubuque. 18 Sep 2016 LEAD mining was carried on in the area as early as 1685 when East Dubuque and mined ...
History of Lead and Zinc Mining in Iowa ... The area includes most of the productive crevices of Dubuque connty. Lead is reported
Lead and Zinc Mining in the Dubuque Area ... The economic life of the district was extended indefinitely when the commercial production of metallic zinc began in 1860.
Lead and Zinc Mining in the Dubuque Area. Lead and Zinc Mining in the Dubuque AreaThe mining district, ...
... decline in its lead mining, to the rugged topography of the drift- less area, and to the. ... HISTORY OF THE UPPER MISSISSIPPI VALLEY ZINC-LEAD MINING DISTRICT, ...
Lead and Zinc Mining in the Dubuque Area. As a general rule, production records were not kept, mines were not surveyed, nor were mine locations plotted.
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LEAD mining was carried on in the area as ... spelled the decline of lead mining in Dubuque. ... The early mining at Dubuque was for lead ores. Since 1880 zinc ...
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Geology and zinc-lead deposits in the Couler Valley area, Dubuque County, Iowa ... Geology and zinc-lead deposits in the Couler Valley area, Dubuque County, Iowa
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Dubuque Lead Mining Company. Described as being "one mile west of Dubuque" in 1895, ... James A. "Lead and Zinc Mining in the Dubuque Area." Online.
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GeoKansas--Geotopics--Lead and Zinc Mining. May 5, 2005, ... When the earliest underground mining began in the Dubuque area, the "crevices" had » Learn More.
Lead and zinc mining in Barry County occurred primarily in the 1880s through 1890s, ... The Granby area was the largest Missouri producer, ...
Lead and Zinc Mining in the Dubuque Area ... The zinc-lead deposits of the Dubuque area and ... the abandoned shafts in the Dubuque mining area were left open ...
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