In situ recovery (ISR) is the chemical process of extracting minerals from the host rock underground through the utilisation of specially designed wellfields. Where the ore exists in an underground aquifer, as is the case at Four Mile, oxygen and a weak acid mining solution is pumped through the ore body to dissolve the uranium minerals. The dissolved uranium is then pumped to the surface, where it is loaded onto resin at the Beverley North Pannikan plant before being transferred to the Beverley Processing Plant for further processing via the iron exchange (IX) process, dried and packaged for export.
|Location||550 km north of Adelaide, east of the northern Flinders Ranges (adjacent to the Beverley Uranium Mine).|
Mining lease (ML) 6402
Download map showing location of Four Mile Uranium Mine tenements via the South Australian Resources Information Gateway (SARIG).
The Four Mile ML is on the western boundary of the Callabonna sub-basin. The ground surface consists of about 15 m of gravels of the Tertiary Willawortina formation, overlying the sands of the Tertiary upper Eyre Formation. The mineralisation occurs within the Tertiary Lower Eyre Formation at a depth ranging from 150–200 m and averaging 180 m.
Resource estimates and production estimates
Company released resource estimates and production statistics for South Australia's major operating and approved mines are summarised in South Australia's major operating/approved mines: resources estimates and production statistics (PDF, updated regularly).
|Approval process||The program for environment protection and rehabilitation (PEPR) submitted December 2016 has been approved.|
|Documents and reports|
Program for environment protection and rehabilitation (PEPR)
Mining compliance reports
Mining lease proposal
|Uranium incident reports|
South Australia’s uranium mines and processing facilities are required to report incidents involving the unplanned release of radioactive process materials, radioactive liquids or radioactive wastes associated with the physical and chemical processing of uranium ores, following standard criteria and procedures.
Four Mile uranium incident reports
For more information, contact:
Phone: +61 8 8463 3000
Phone: + 61 8 8463 3484