Bike manufacturer SRAM bought a unique storage building in Chicago. It was formerly a ten-story freezer for Chicago’s Fulton Market District. All that freezer space had to be defrosted before it could be used for anything else!
After decades of use, the building literally had to be defrosted like an old freezer. See the Time Lapse Video (courtesy of Sterling Bay Companies.) At the: 24 second mark, you can see the large propane heaters brought in to accelerate the melting process.