Free high resolution photo of a piece of old mining equipment. I’m not entirely sure what this is, but it looks like an old ore crusher. You can see the heavy flywheel indicating that whatever this device did, it generated significant force. The arm to the right likely held the belt, and the crushing mechanism is just to the left of the arm under the big bin or hopper. Photo taken in Golden, Colorado near the campus of the Colorado School of Mines. Free image for any use.