Firedoor Looking into the main workhouse from the skyway into the annex elevator. But who care? Look at the colors! Related Similar Images ...based on the tags: conveyors, doors, graffiti, pipes, skyways... The light next to this acid tank was perfect, thanks to a gaping hole in the roof. The side of the church, taken from a grungy sidewalk. This building cleaned the barrels that transported ingredients through the plant. The office was redder than the rest of the building. Bits and things in a pile in the corner of the smelter, the unsold chunks of industrial history that didn’t sell at an on-site auction before my visit. Looking out of the demolished skyway. Note the big hole in the floor. The lens is too wide to keep my foot out of it… I’m hanging in the superstructure that I climbed to make this photo. Heavy steel doors to isolate the underground magnetic separation mill from Eagle Mine’s main tunnel. The spectacular, if precarious, view of downtown Minneapolis from the roof of ADM Annex 4. Note the great messages left by various graffiti artists who made it to the spot. A small bunker and blast wall between shell-loading buildings would have provided shelter during disasters, such as tornados, accidental explosions, and perhaps even enemy attacks.