This district was first placer mined in the 1850's and then hydraulicked up to the early 1880's. Columbia was named after the nearby Columbia Hill and "North" was added to distinguish it from Columbia in Tuolumme County. The main mine was the "Delhi" and was active from the 1860's till the 1890's. The placer mines of North Columbia are estimated to have yielded up to $3 million.
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