Located approximately 50 km south of Pannawonica in the Pilbara Region, the Bungaroo South Development proposed open pits would mine channel-iron deposits (CID) comprising tertiary-aged alluvium, clayey sands and hardcap CID over an estimated 15-year life. The magnetite ore would be trucked along a proposed 200 km sealed haul road from the mine to a port development at Cape Preston.
PSM was engaged to assess the geological, engineering and geotechnical conditions along three proposed road alignments and develop engineering geological maps of preliminary geotechnical characteristics.
The remote location is subject to high rainfall and events associated with tropical cyclones. There was limited understanding of the geology of this area and geotechnically challenging terrain. This included the rugged Hamersley Ranges which comprise high-strength banded iron formation outcropping in steep hills and gorges.
Engineering and technical opportunities included:
Following rigorous assessment and modelling, PSM’s tailored approach included:
The staged approach maximised the delivery of important geotechnical advice and minimised design cost to the client.
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