Description: Sunk in 1890 by the Staveley Coal and Iron Company, Warsop Main Colliery opened in 1893. A disaster occured on 20 December 1939 when 1,850 ton of roof collapsed and crushed 6 men to death. Warsop Vale was purpose built by the Staveley Coal and Iron Company for the purpose of housing the workforce employed by them working at Warsop Main Colliery.