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#3, blast furnace of Ruhrstahl AG's Henrichshütte integrated steel works, Hattingen, Germany

BF #3 closed down in 1987 and converted into a public museum in the late 1990ies
BF #2 (formerly to the right of #3) relocated to China in the late 1980ies
BF #1 outdated, closed down and demolished decades earlier