Foundry Cupolas These copulas made the iron for casting. Related Similar Images ...based on the tags: collapsing, cupolas, favorites, furnaces, numbers, pipes, rivets, rusty, worker-graffiti... A tower above Minneapolis that few people see. The left wall is stacked high with wooden crates holding spools. Tags hang on machines describing the last batch of silk the mill ever produced. Looking across a skyway at the dust-collecting funnels, one of the few pieces of equipment that haven’t been completely decimated by time and the elements. This wheel scoops the washings from the sluice room and places it on the tailings conveyor. Furnace #7, as seen from #6’s catwalks. Cue morning fog. This was a living space for the keepers during storms, when it was too dangerous to return to the houses on the point. Ryan, as seen from the crane ladder. If you know what BTI stands for, please leave a comment. The last trace of Mitchell, Minnesota is a pile of cans on the side of the main street, Mitchell Avenue. These will be recognizable for another century or so, for future history-minded explorers.