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Potosi Barite Mining District, Washington County, Missouri, USA
Potosi Barite Mining District, Washington County, Missouri, USA : The Potosi mines, or Mine a Burton, discovered in 1763, have been the scene of almost constant mining ever since. ... Science and Mathematics Publishing Company, 187 pages. ... Baryte, etc. G.P. Materials South Quarry, Potosi, Potosi Barite Mining District, Washington County ...