At Treasure Mountain mine. This collapsed building was likely the 1937 Compressor House, which pushed compressed air and water into the Sanitago Tunnel in the time it was producing.
A colorful boiler is a happy boiler! RotoGrate systems remove ashes from the boiler firebox by revolving the bottom of the system to let the fly ash drop into a hopper. This greatly increases boiler efficiency.
I wanted to see the third floor to get a better view, but the third floor had already been demolished. The old walls had cascaded down the staircases. This building is gone, now, as you can expect.
The wood-braced structures descending the hill connected the La Crosse Tunnel to the mill in Central City. To see a picture of an aerial tram in action, see at my Treasure Mountain article.
This ruin was once the Toltec Mine, a producing gold and silver claim that operated into the 1940s.
Looking through a secure ward door at the destroyed rooms beyond.
The arches of the Twohy building, before some of the signs and sills were painted in 2015.
Looking out at the abandoned neighborhood around the house.
Left: A medium storage chamber with access to an interconnecting steam tunnel at ceiling height. This room also has various smashed toilets. Why? Because dead toilets–all of them–always find a home in a cave. Center: Steps go past a +-intersection, left goes deeper, right goes to utility tunnels for the brewery, forward used to go to the brewery basement… it’s now backfilled. Left from the backfill is a small hallway; see ‘Backfill Self Portrait’. Center-Right: Utility tunnels tie knots between the brewery’s demolished basement and its caves. Right: Most of the storage volume is in large chambers down this causeway.