Under Dock 1 Where the approach meets the dock. Related Similar Images ...based on the tags: black&white, trestles, wooden... The Columbus Mine overlooks its mill, which was one of the last to operate in the region, thanks to the demand for industrial metals during World War II. A small upper level was accessible via ladder through the hole in this ceiling. Ben for scale. One thing that struck me as a midwesterner in the South was the vines. They seem to be able to completely cover a building when left alone for a few decades. Since this picture was taken, the roof has totally collapsed in this area. The superstructure for the sea-leg skyways serves no purpose now… the offices are bricked up, too. Why? This is the former air compressor house–one of them, at least–which turned steam power into air power to drive machinery across the production line. Standing next to the now-demolished records room. For 20 years, this served as the public library. According to blogger, this has been moved to Springer. An article from Minnpost describes this design as “marital”, and I could not agree more.