Mammoth Mine overlooks Central City from atop Mammoth Hill. In the distance you can make out Coeur d’Alene Mine (red), which operated from 1885 through 1940.
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No wonder the factory shut down; everyone was scheduled to work 9 to 5 and the clock’s broken! (In all seriousness, this is/used to be a beautiful timepiece, especially for a utilitarian factory like this.
National Mine and its rockhouse (?) as seen from Mammoth Hill. From this angle, I am fairly certain this was a crushing and sorting house. The bottom looks like it has two aerial tram doors as well.
…a better view of the huge tailings boom stretching outside of the tailings pond.
Inside the office was a small furnace and a collection of mechanical belts. You can see “SERVICE AT COST” and “POOL 168” in the background.
Between all of the buildings was dense growth, especially vines.
Interlocking bricks at the mouth of the stoker-less boiler.
West Elevation of the Depot. Ektar 100/Mamiya 6
This might have been part of the Pioneer Pellet Plant. It looks to be a ball mill, which pulverizes ore by spinning it with thousands of ball bearings.
Two counterweighted elevators moved men between the surface, mine, and underground mill.