| Reference Number | TPC/5/6/140 |
| Title | Modifications to Existing Steelwork at 37.83 Level Drum Revolve |
| Level | Item |
| Date | 17 June 1974 |
| Description | Mole-Richardson (Stage & Studio Engineering) Ltd drawing number D14-299. Drawn by D Cox. Works number 2815. |
| Extent | 1 drawing |
| Series | Mole-Richardson (Stage & Studio Engineering) Ltd Drawings |