DID YOU KNOW? Groote Eylandt Is Home to a World-Class Manganese Mine.
- Groote Broadcasting

- 4 days ago
- 2 min read
Amongst the forests of Groote Eylandt is a resource that has made this remote island an important part of the global mining industry: manganese.
The Groote Eylandt Mining Company, better known as GEMCO, began mining manganese on the island in 1965. Today, the operation is one of the world's significant sources of high-grade manganese ore—a mineral that most of us rarely think about, but which plays an important role in making steel.
Manganese helps make steel stronger and more durable, meaning a mineral mined on a remote island in the Gulf of Carpentaria can ultimately find its way into everything from buildings and bridges to machinery and infrastructure around the world.
But there's another part of the Groote story that makes the mine particularly significant.
Groote Eylandt became Aboriginal freehold land in 1976.
That means the relationship between mining and Country isn't simply a matter of a company operating on ordinary private or government-owned land. Under the Aboriginal Land Rights (Northern Territory) Act 1976, the Anindilyakwa Land Council represents Traditional Owners in matters affecting their traditional lands, including mining and development.
GEMCO's mining agreements involve negotiated rents and royalties, while the Land Council plays an important role in representing Traditional Owners and dealing with land access and mining matters. Royalties also contribute to economic and community development across the Groote Archipelago.
And there's an interesting environmental balancing act.
Groote Eylandt is not simply a mining island. It contains forest, open woodland, beaches, freshwater swimming holes, rock art and a highly valued marine environment, including threatened species and sensitive ecosystems. The Anindilyakwa Land Council describes the archipelago as having very high ecological value and stresses the importance of protecting Country and traditional ways of life.
Alongside the economic importance of manganese is a story that deserves attention: dust and questions about long-term health.
Manganese itself is an essential mineral that our bodies need in small amounts. However, prolonged exposure to high concentrations—particularly through inhalation of manganese-containing dust—can be harmful. Occupational exposure to high levels has been associated with neurological effects and manganese toxicity.
There have also been independent concerns about what we still don't know. In environmental health assessments, government health officials have acknowledged that the long-term health impacts of manganese exposure on Groote Eylandt remain uncertain, and recommended further consideration of research findings.
So this isn't simply a story about mining versus community.
It's a story about a valuable resource, an industry that has been part of Groote Eylandt for more than six decades, Anindilyakwa rights and ownership, employment and economic opportunity—and the responsibility to understand and manage potential environmental and health impacts.
Perhaps the most important thing is that the conversation continues, with good-quality independent research, transparent monitoring and the voices of the people who live on Country at the centre of it.




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