The Windscale fire was a fire in Britain's first nuclear reactor at Windscale (now Sellafield) on 10 October 1957. The fire spread radioactive fallout over hundreds of miles. Some of the most dangerous contamination was kept secret, and its effects only came to light years later. At the back of the reactor, ruptured fuel cartridges containing uranium are still jammed in the fire damaged core, awaiting safe removal. Official estimates are that about a hundred people died from the contamination. The cleanup cost over a hundred million pounds. The Windscale fire was the first fire in any nuclear facility.