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| Archive Reference / Library Class No. | NCB/E/MAR/3/49 |
| Former Reference | D4774/12/9/124 |
| Title | Markham Colliery Overmen's instruction book, also containing underground control log for 30 July 1973, compiled by W. Steel with regard to No. 3 Shaft incident |
| Date | Jun 1973-Jul 1973 |
| Description | Containing (pages 1-41) instructions from 5 June to 27 July 1973 and (pages 42-49) underground control log by W. Steel |
| Extent | 1 volume |
| Level | Item |
| Repository | Derbyshire Record Office |
| Archive Creator | Markham Colliery |
| National Coal Board |
| Format | Document |
| Term | Mining disasters |
| Coal mine accidents |