I repaired forklifts for 40 years, got to see many interesting places and processes over the years. Just before retiring I spent a lot of time in a local foundry that cast steel forklift counterweights. Everything from 1,500 lbs to 9,000 - 10,000 lb pours. It was dirty, hot dangerous but mesmerizing.
They had a cooling room that was 2 stories high. Imagine a 50 yard long room filled with cooling counterweights on racks that started out yellow hot. You could walk down the middle of the racks fast but anything slower was too much heat. Warm in the winter, unbearable in the summer.
Don