The new LOM plan includes a change in mining and haulage methods to suit the deepening mine and the nature of the existing unmined lodes.
The company has dubbed the new mining approach as Gwalia mass extraction (GMX), which will likely begin in year four, FY21, of the new plan.
A prefeasibility study completed on GMX highlighted the viability of moving to “island pillar” methods for narrower lodes with increased mining rates and increased haulage rates by moving to hydraulic hoisting.
The A$100 million Gwalia extension project, currently underway, will enable the shift to GMX.
A feasibility study on GMX and a final investment decision are expected by December.