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Investigation of Perkiomen Creek Copper Deposits, Montgomery County, Pa
註釋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.