[2][3] The Mirrar, an Aboriginal Australian people, led by Margarula and Katona, mounted a large campaign in opposition to the proposed Jabiluka uranium mine in the Northern Territory of Australia.
In July the land was cleared by Energy Resources of Australia and construction of the entrance to the Jabiluka mine began; however, protesters intervened and about 550 were arrested, including Margarula and Katona.
[4][5][6] In 2011, Margarula wrote a public letter to Ban Ki-moon, Secretary-General of the United Nations, expressing sorrow that uranium from Mirarr land was used in the Fukushima plant.
[7] In 2024, Yvonne Margarula was permitted to join the ongoing legal battle as the representative of the Mirrar people, to safeguard Jabiluka from uranium mining by Energy Resources of Australia (ERA).
This development follows the Northern Territory government's initial denial of ERA's lease renewal request, which was based on conservation plans for Kakadu National Park.