McArthur River Mine Dewatering, NT

The McArthur River Mine, located on one of the world's largest zinc and lead deposits, is located 970 kilometres southeast of Darwin. In late March, the site was heavily impacted by Tropical Cyclone Megan, which brought approximately 350 mm of rain in 48 hours, causing significant disruption to mining operations.

NPE was engaged to manage the dewatering of the mine’s pit, which had flooded due to the extreme event. Our team designed and implemented a multi-stage pumping solution to remove the surface water. The system included advanced engineering tailored specifically to the site’s requirements, with a series of pumps and holding tanks strategically placed to efficiently move water from the bottom of the pit to the designated holding dam.

The entire operation was overseen by our experienced NPE technicians, who manned the system throughout the duration of the dewatering process. Their expertise ensured that the system operated smoothly, with remote monitoring and control capabilities adding an extra layer of precision. Our client had access to real-time data, providing full visibility into the process and ensuring the success of the dewatering effort.

The NPE team worked successfully with the MRM site team to ensure the project was carried out without any safety or environmental incidents.