A plan to extend the life of a major mine to 2050 has been described as the “largest coal-mining proposal ever put forward” in NSW with warnings steep cuts to other sectors’ emissions will be needed to compensate.

The proposal to continue Hunter Valley Operations, a joint venture between Glencore and Yancoal, would produce an extra 437.6 million tonnes of thermal coal and 59.7 million tonnes of metallurgical coal for export.

The NSW Environment Protection Authority warns the project has “significant unabated greenhouse gas emissions”.

“This proposal is the largest coal mining proposal ever put forward in NSW,” a This post was originally published on Michael West.