Mining

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late Middle English: from Old French mine (noun), miner (verb), perhaps of Celtic origin; compare with Welsh mwyn ‘ore’, earlier ‘mine’.

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etymonline

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mining (n.)

1520s, "the business or work of a miner," verbal noun from mine (v.1). From c. 1300 as "the undermining of walls or towers in a military attack." Mining-camp "temporary settlement for mining purposes" is by 1853, in a California context.