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Detail shot of the belt shoes on the NASA ‘crawlers’. The crawler, which carries the shuttles mobile launch platform and orbiter from the vehicle assembly building to the launch pad has an unloaded weight of 8,230,000 pounds. The crawler has 456 shoes, 57 per belt (8 belts in all). Each shoe weighs 2,200 pounds alone. The two crawlers have been in service now for more than 40 years – fully laden they carry eleven million pounds of payload at a little over one mile per hour and in their operational lifetime have travelled more than 3,500 miles back and forwards down the crawler way.
Image Credit: NASA/KMC.