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In its investigation of deposits of strategic minerals, the Bureau of Mines did some development drilling at the Perkiomen Creek deposits, 5 miles east of Phoenixville, Pa. This area wa the center of much copper mining from 1851 to 1858. The most productive vein was the Perkiomen-Ecton mines, owned by the Perkiomen Consolidated Mining Co. The mines were closed in 1858, and no further production has been recorded.
A collection of new studies dedicated to Professor Beno Rothenberg, focused on copper in antiquity in the Near East, the eastern Mediterranean, and the British Isles.
"Report of Pennsylvania Forestry Commission", published in 1896: 1895, pt. 2.