Pair of headstocks and linking powerhouse. Built 1950-51 for the Bolsover Colliery Co. Steel, brick and concrete. Two tall steel framed headstocks with diagonal supports linked to the central powerhouse. Each headstock has two wheels one above the other with steel hoods to protect the cables. Central brick powerhouse and operating room brick with flat concrete roofs, has steel framed windows at eaves level. Brick square towers at either end with stepped central section with strips of windows. These extremely impressive headstocks are an early example of the 'keope' winding system for raising and lowering access cages. (JM)