MMG Limited is a mid-tier global resources company that mines, explores and develops base metal projects around the world.

[6] In February 2022, Resources Minister Guy Barrett granted a new lease to the MMG along an access road where it wants to develop a heavy metals tailings dam in the Tarkine rainforest.

[7] The BBF subsequently challenged the decision in the Tasmanian Supreme Court in April 2023, but was rejected by chief justice Alan Blow.

[9][10] Another bid by the BBF in the Federal Court to halt work on a tailings dam in the Tarkine, saying that it would cause irreversible damage to the Tasmanian masked owl's habitat, was lost.

[11][12] MMG operate and develop copper, zinc and other base metals projects across Australia, Botswana, the Democratic Republic of the Congo and Peru.