File A on implementation of emergency procedures, for Markham No. 3 Shaft incident inquiry Including telephone logbook for 21 May-5 Aug 1973, manuscript account by E Revill of events on 30 July 1973, written 9 Aug 1973, draft notes of 3rd meeting on 5 Oct 1973, draft statement and notebook of James Rodgers, list of men interviewed who returned a check other than those in the cage of who gave a written statement, and details of outgoing telephone calls on 30 July 1973, and surface mechanical check list Aug 1973-Oct 1973