The Centennial Mine #1/#2 hoist -- actually, just the cinder block addition on the back, which held the mine's compressors. The hoist itself is nothing but a foundation, to the left. In the far distance, the shaft house hides behind an old town dump which was mysteriously created between these buildings.
The compressors were still mounted inside this building up until just a few years ago -- as you can see over at Copper Country Explorer's Centennial mine page. Sadly, they are now gone.