A mining and metals company
With a focus on safe and consistent production, GM3 will leverage strong operational performance to enable long-term future opportunity from its metallurgical coal assets.
A mining and metals company
With a focus on safe and consistent production, GM3 will leverage strong operational performance to enable long-term future opportunity from its metallurgical coal assets.
Appin Mine
Appin Mine in the Wollondilly region of New South Wales, approximately 25 kilometres north-west of Wollongong, is an existing underground mine primarily producing metallurgical coal. It is currently operating in the Douglas Park and Menangle areas.
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Dendrobium Mine
Dendrobium Mine is an underground mine with operations located immediately adjacent to Mount Kembla, approximately 8 kilometres west of Wollongong in New South Wales, on the Illawarra escarpment.
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Tahmoor Mine
Tahmoor Mine is an underground coal mining operation located in the Wollondilly region of New South Wales. Tahmoor Mine primarily produces metallurgical coal used in steelmaking.
Learn MoreA partnership for a bright future
GEAR and M Resources are established participants in the Australian metallurgical coal industry, with a strong commitment to environmental and safety standards, who are well positioned to continue the Illawarra assets’ contribution to the local steel industry and the Illawarra and Macarthur regions.
Learn moreOperational Performance
Focusing on safe, consistent production, GM3 will leverage strong operations for long-term opportunities from its metallurgical coal assets.
Long Term Sustainability
GM3 has a strong commitment to long-term sustainability – social performance, environmental management and economic contribution.
Positioned for Growth
Focussed on the future, GM3 aims to contribute to the regions surrounding its operations and leverage the capability and experience of its people.
Latest news
GM3 commences as Tahmoor Mine operator, sets course for December restart
Golden Energy and Resources (GEAR) and M Resources, completed the acquisition of Tahmoor Mine on...
Supporting Safer Young Drivers Through U Turn The Wheel
GM³ Appin Mine is proud to support local road safety education initiatives, helping young people...
Dendrobium Mine Claims Southern Mines Rescue Title
GM3 Dendrobium Mine’s Rescue team has earned a place at the 2026 Australian Mines Rescue...
$50K For Appin Men’s Shed Extension Project
GM3 Appin Mine is proud to continue its support of the Appin Men’s Shed, with...
GM³ Dendrobium Mine Recognised for Environmental Excellence at 2026 HSEC Awards
GM3 has been recognised at the 2026 NSW Mining Health, Safety, Environment and Community (HSEC)...
GM³ Joins Community to Commemorate Mount Kembla Mine Disaster and Announce Return of Heritage Festival
GM³ was honoured to stand alongside the Illawarra community on Friday 31 July 2026, to...
Appin remembers victims of 1979 Mine Disaster
on Friday 24 July 2026, GM3 Appin Mine gathered alongside families, colleagues and the community...