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| Archive Reference / Library Class No. | D1920/1/2/12 |
| Former Reference | A355/1 |
| Title | Underground locomotives - short-wave radios |
| Date | 1963 |
| Description | Correspondence between the National Union of Mineworkers (NUM), NUM Derbyshire Area and branches in the Derbyshire Area concerning the use of short-wave radios on underground locomotives. |
| Extent | 1 file |
| Level | File |
| Repository | Derbyshire Record Office |
| Archive Creator | National Union of Mineworkers (NUM) Derbyshire Area |