The scope of work included the sinking, lining and equipping of the Main Shaft (11.7 metres in diameter) to a depth of 180 metres and the Ventilation Shaft (9.2 metres in diameter) to 168 metres. This included the development and equipping of a Decline Materials Shaft (7 metres in width and 3.3 metres in height at -17 degrees) for a distance of 700 metres; and the development and equipping of the underground coal –storage bunker and all the associated station works and connecting works. Moolmans tackled the project with a number of new innovations; the design and use of a cantilever headgear for blind sinking, the development of the -17-degree decline using unassisted load-haul dumpers (LHDs), and the development of a low-profile conveyor-loading chute. A notable achievement was the completion of the heaviest deep-slinging operation in Southern Africa, in which mining machinery weighing up to 65 tonnes was lowered down the shaft.
