WW Surveys provided survey management for the conversion of the Broadmeadow open-cut coal mine to an underground mine.
Due to the schedule of rates contract between Leighton and BMA, WW Surveys was required to carry out extensive volumetric calculations for the 8 million cubic metres of earthworks. These volumes were calculated using data supplied from conventional survey methods, as well as land and aerial terrestrial scanning.
WW Surveys oversaw the management of the machine control for 21 pieces of plant, including two 125-tonne excavators to be used for the earthworks. The project also required survey services for the construction of associated infrastructure, including access roads, dams, drainage, conveyor footings and underground portals.
Client: BHP Billiton Mitsubishi Alliance and Bechtel
Project value: $190 million
Project duration: March 2011 to September 2012
Principal contractor: Leighton Contractors
