The Harbour Area Treatment Scheme (HATS) is part of the Hong Kong Government’s infrastructure programme to improve the water quality in Victoria Harbour. RUC Cementation Mining Contractors were awarded the shaft sinking contract for the series of four production shafts and associated infrastructure required for the project. Wilshaw provided the engineering design and drafting services for RUC Cementation Mining Contractors to carry out the shaft sinking operation. The shafts varied from 8.0m diameter to 11.6m diameter and the shaft depths were between 152 to 180m.
Wilshaw's design work included:-