| Inspector in Charge : E. Rowley. |
| Senior Inspector of Mines : H. C. W. Roberts. |
| Junior Inspector of Mines : T. D. Davies. |
| Junior Inspector of Mines : R. Butler. |
| Junior Inspector of Mines : F. N. Siddall. |
| Junior Inspector of Mines : H. H. Wilson. |
| Junior Electrical Inspector : T. Storrs. |
| Sub-Inspector of Mines : W. Price. |
| Sub-Inspector of Mines : G. H. Sutton. |
| Sub-Inspector of Mines : R. H. Clough. |
| Sub-Inspector of Quarries : W. Morrow. |
| Sub-Inspector of Quarries : M. A. Cheshire. |
| Inspector of Horses : J. Evans. |