| Description | Including for Codnor Park Works, Coxmoor Farm, East Kirkby, Ollerton village and housing, Swanwick Hayes, Loscoe Brook Farm, Denby Old Hall, power plant for Derbyshire collieries, with draft report on power stations, 22 Apr 1940 and other company properties. Including plan of overhead lines and underground cables connecting the Butterley Works, Colliery Offices at Ironville, Waingroves Brick Works, Waingroves Hall and the collieries of Hartshay, Britain, Ford's, Salterwood, Marehay, Denby Hall, Ripley, Western, Ormonde and New Langley, revised 31 Oct 1939 |