According to the agreement, both firms have approved for expansion of both Tarrawonga and Boggabri Coal.
Boggabri Coal will be expanded with development of a rail spur and coal handling and preparation plant.
The tenement ownership within the expanded JV area will be restructured to ensure that and Boggabri Coal hold a 70% and 30% interest respectively in each tenement within the project area.
Whitehaven managing director Tony Haggarty said the proposed extension of the Tarrawonga JV will promote the most efficient use of assets in the part of the Gunnedah Basin.
