The task of agreeing on regulations by mid-2023 is "seemingly insurmountable".

Carol Meredith will leave the role in September to spend more time with family overseas and the search for a new chief executive is underway.

The project would be an extension of Isaac Plains, producing up to 2.5 million tonnes per annum of saleable coking coal.

Iron ore prices have suffered their worst week for nearly 18 months.

Australia's Lynas Rare Earths on Monday reported record fourth-quarter revenue as demand for the metals it mines that are used in electric vehicles, smartphones, and military equipment spurred prices higher.

Australian media report that Rangelea Holdings has received over $40 million from Heathgate Resources since 2003 and is not willing to open the books to the public.