Speaking at the National Press Club on Wednesday, Ms King said the government was weighing how to respond to investors who had failed to divest from the company. In May, Treasurer Jim Chalmers ordered six investors holding about 17 per cent of Northern Minerals to divest by July 2. The company, which is developing the Browns Range project in Western Australia's east Kimberley region, told the ASX in July that the investors still held most of the shares they had been ordered to sell.
Ms King said the uncertainty was "holding up" development of a deposit she described as "one of the most significant heavy rare earth deposits on the face of the Earth", and vital to national interest and national security. The project is a source of dysprosium and terbium, critical minerals used in renewable energy infrastructure and advanced military technology. Northern Minerals is already on track for about $500 million in funding from the Export-Import Bank of the United States, and is seen by both Washington and Canberra as a key player in efforts to break China's stranglehold on the critical minerals supply chain.
When asked whether the government would be willing to nationalise the company, Ms King said: "I guess it is one option, but I wouldn't want to advance on any decision we're making there." She also appeared to confirm that the companies had failed to pay fines imposed by the federal government, saying "failure to follow through or pay respects, quite frankly, to Australian government decisions, is a very serious matter we are looking at".
The comments follow a rolling series of government interventions. In 2023, Mr Chalmers blocked the China-linked Yuxiao Fund from boosting its stake, and in 2025 he ordered another five companies linked to China to divest. Earlier this year, one of those investors launched an unsuccessful bid to topple the company's leadership.