Windscale Piles

Windscale Piles were a pair of plutonium production reactors located at the Windscale site in Cumbria, England. They were part of the UK's first large-scale nuclear facility and were built in the late 1940s and early 1950s. The reactors were operational from 1956 until 1981. The main purpose of the Windscale Piles was to produce plutonium for the British nuclear weapons program.