It expires at the end of 2075, with three additional 10-year options that must be by mutual agreement.

Matthew Kelly has worked as a journalist for more than 25 years. He has been working as a general reporter at the Newcastle Herald since 2018.

In recent years he has reported on subjects including environment, energy, water security, manufacturing and higher education.

He has previously covered issues including the health and environmental impacts of uncovered coal wagons in the Hunter Valley, the pollution of legacy of former industrial sites and freedom of information issues.