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They also mined for metals, such as copper and gold, ... were quarrying and working cobbles of chert along the limestone terraces on either side of the Nile.
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minor quantities of copper, feldspar, mica, beryl, and gypsum. Copper was produced around the turn Historic Mining and Quarrying in Jefferson County Golden.
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Compared to other regions in England, the quarrying industry on Mendip was rather late in developing.
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