| Chief Inspector : H. S. Stephenson. |
| Deputy Chief Inspector : W. Brown. |
| Deputy Chief Inspector : R. H. Clough. |
| Deputy Chief Inspector : G. Hoyle. |
| Principal Medical Inspector : J. M. Davidson. |
| Principal Inspector for Special Development Duties : W. H. N. Carter. |
| Senior District Inspector : R. T. Purvis. |
| Senior District Inspector : A. Thorpe. |
| Principal Electrical Inspector : D. E. Fox. |
| Deputy Principal Electrical Inspector : B. J. Burkle. |
| Senior Electrical Inspector : R. Dobson. |
| Senior Electrical Inspector : S. Luxmore. |
| Senior Electrical Inspector : B. Hill. |
| Electrical Inspector : G. Hill. |
| Principal Inspector of Mechanical Engineering : S. J. Ayres. |
| Deputy Principal Inspector of Mechanical Engineering : J. H. Longstaffe. |
| Senior Inspector of Mechanical Engineering : T. K. Clanzy. |
| Senior Inspector of Mechanical Engineering : H. Starr. |
| Principal Inspector of Quarries : M. A. Cheshire. |