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| Archive Reference / Library Class No. | NCB/A/BUT/13/9/4 |
| Former Reference | N5/18/5 |
| Title | Butterley Company correspondence file on the Coke Ovens Special Committee of the Fuel Research Board |
| Date | Jun 1934-Feb 1935 |
| Description | The committee was investigating experiments with coke ovens: the file includes copies of printed publications and reports on coke research |
| Extent | 1 file |
| Level | File |
| Repository | Derbyshire Record Office |
| Archive Creator | Butterley Company |
| National Coal Board |