tunnel mining of basalt in pakistan

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Mar 16, 2015 An exhibit at Basalt Regional Library this month features the minerals, gemstones and mining artifacts of Julie Hesse of Basalt. Her works includea serving tray from the early 1900s that tout The Famous Cowenhoven Tunnel (upper center) and a book by Aspen pioneer David Hyman, 'The Romance of a Mining Venture.'

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