For the first time in more than a decade, MMG Rosebery is undertaking a significant multi-million dollar ventilation project.
A raiseboring machine will be used to drill the first of many ventilation rises, which will be 4.5 metres in diameter, 200 metres high and situated 1.4 kilometres below surface.
MMG Rosebery General Manager Steve Scott said the raiseboring project is part of the ongoing investment to expand the mine.
“This is another exciting addition to our program of works that will extend the life of Rosebery Mine, well beyond 100 years,” Mr Scott said.
“As we continue our largest ever exploration program, work is required to build ventilation shafts in new areas of the mine.
“This is the most northern raiseboring exercise ever undertaken at Rosebery and opens up future mining opportunities.”
It comes as MMG Rosebery announces the latest results of its Mineral Resources and Ore Reserves for 2024.
Mineral Resource tonnage for the orebody has increased significantly, increasing to 25 million tonnes, a 32 per cent increase from 2023.
Ore Reserves increased by 2.1 million tonnes to 6.7 million tonnes, which will support up to 7 years of mine life at Rosebery. This is due to further diamond drilling activities in the lower mine, improved geological modelling and advancements to mineral processing scripts with a renewed focus on precious metals such as gold and silver.
“The Mineral Resource and Ore Reserve report highlights the importance of our interim and long-term tailings storage solutions to extend the life of Rosebery Mine,” Mr Scott said.
“We have approval from the Board of the EPA to progress with an expansion of our existing Bobadil tailings storage facility (TSF), pending West Coast Council’s issuing of the final permit, which will provide more than 2 years of interim additional tailings capacity.
“Long term, we are exploring locations across our tenements around Rosebery for suitable sites for a new TSF. South Marionoak remains a focus but there is a program of work still to be undertaken to determine whether the site is a viable location for a TSF.”
Rosebery Mine has been continuously operating for 88 years and makes a significant contribution to the Tasmanian economy through the employment of a 600 strong workforce, around $77 million spent across our Tasmanian supply chain each year, more than $1.1 million annually in rates to the West Coast Council and around $70 million in employee salaries and benefits.
The Mineral Resources and Ore Reserves Statement is available here.
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