CGX car nut:

Old mining camp?  That tank on the lefthand of the first image looks interesting.  

Yes silver lead mine -- off set head frame [the ore cars came down the cable from up the mountain, rather than up a shaft below] at 9500'.  Winter mining up here could not have been fun. Our predecessors were tough.  Tank probably a ball mill, to reduce the waste off the ore before the wagons carried the ore down the nasty steep road 5 miles to the valley,

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