Silk Spools There were bins with hundreds of spools in them in the basement. Similar Images ...based on the tags: dirty, funnels, rusty, spools... The south wall of the power plant. Its sheet metal skin couldn’t fit around the structure, it seems… note the very strange protruding superstructure. The boiler doors are beautiful, and feature the name of the smelter and mine company. If you like these, check my article on the Mitchell Yards of Hibbing, MN. Through a section of the tailings boom where mountain winds tore open the sheet metal around the conveyor, I poked my head out. A staircase threads between the top floor and the sluices, which are in the middle of the dredge-mill. Wind blew taconite dust against the walls of these suspended control room, making even the glass appear to rust. Looking across the catwalk behind the ore chutes, when they were up, and at the top of the ore chutes during loading. At noon, the lower skylights around the shops glow yellow-green, thanks to the flora blooming on the roof above. I believe these hooks were meant for hanging filters to dry. This load of lime seems to have been left right where it was loaded.