Dust Collectors The skyway’s steel substructure collapsed slightly, crushing part of the dust collectors. Related Similar Images ...based on the tags: catwalks, chutes, funnels, skyways... Sunset through a stained window in the headhouse made the floor feel like a heavy industrial Disney movie. Looking up to the second floor of the Nitrating House, where cotton would be soaked in nitric acid. These brought cotton into the building. The coke plant looked more natural through a grimy window. Looking out upon Mill City through the lens of FLOUR, highlighted in pink and low clouds. This sign has recently been converted into LED lighting. To the right is the spiral staircase. This building had a definite “floor problem”. The cupola–the space above the silos–is surprisingly original. The building was too unstable for anyone to scrap it out. Seriously, the floor is a deathtrap. Winter skies over Allouez Bay. From a distance, it looks almost fragile. The scale of the grain hoppers helps tell the story of how large Hamm’s was in its day. Worm in the path of raw ore where it would be dumped from rock cars into the silo below.