Miners in Chihuahua, Mexico, ascending a mineshaft by means of crude steps carrying candles attached to sticks to light their way. Descending and ascending such shafts was a daily hazard. The state of Chihuahua has been a source of silver, gold and mercury for many centuries. From Underground Life: or, Mines and Miners by Louis Simonin (London, 1869). Wood engraving.

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