Secretary's Department file on surface estate of closed colliery sites in the North Derbyshire Area Including on New Hucknall, May 1972, 'A' Winning, May 1972-March 1974, Grassmoor, July 1972-Oct 1973, Morton, Oct 1972-Jan 1977, Swanwick, Oct 1972, Oxcroft, March 1973-March 1979, Denby Hall, March 1973, Ramcroft, March 1973, Williamthorpe, March 1973-March 1978, Norwood, April 1973, Mapperley, July 1973-Jan 1977, New Winnings, Aug 1973- Jan 1977, Denby Drury Lowe, Oct 1973-Jan 1977, Ormonde, March 1974-April 1978, Denby Hall, June 1974, Alma, North Wingfield, Sep 1974, Glapwell, Nov 1974-Apr 1978, 'B' Winning, Dec 1976, and on sites for potential industrial sites, Dec 1973 May 1972-May 1979