Linc, which owns the Teresa coal prospect in the Bowen Basin, is understood to be keen to start developing coal assets along with its coal-to-gas projects.

A spokeswoman for BHP Billiton would not comment on the speculation to ILN, but confirmed that the company was investigating a potential divestment of the Gregory Mine complex.

“No decision has been made regarding the future of the Gregory Crinum complex,” she said.

“In February, we said any decision to proceed with divestment or otherwise was unlikely for six to nine months, and would depend on market interest and other commercial factors.

“BMA will regularly engage with its employees and their representatives as well as key stakeholders should the divestment process proceed further. BHP Billiton Metallurgical Coal will continue to review its portfolio of assets to ensure alignment with the company’s strategy.”