| Description | Including lists of deceased and injured men, copy of memorial service at Chesterfield Parish Church on 11 Aug 1973, copies of press summaries on the incident, lists of men issued checks and returning home on 30 July 1973, information on workmen who left Markham Colliery immediatey after the incident and summary of wastage, 30 July to 22 Sep 1973, copies of NCB Production Department instructions, and details of outgoing phone calls between 6.30 ad 9.45 AM on 30 July 1973 |