The Project is located on the eastern flank of the northern Surat Basin, which stratigraphically overlies the Bowen Basin. The Surat Basin comprises Jurassic to Cretaceous aged sandstones, siltstones, and mudstones deposited in a predominantly fluvio-lacustrine depositional environment.

The oldest sediments throughout the Surat Basin are the early to middle Jurassic aged Precipice Sandstone, Evergreen Formation, and Hutton Sandstone. These units subcrop approximately 25 km northeast of the Project area and dip to the southwest. Within the Project area, these units are between 600 m to 1,100 m below ground level (mbGL). The Hutton Sandstone is unconformably overlain by the Eurombah Formation, which in turn is overlain by the Walloon Coal Measures. The Eurombah Formation is approximately 95 m thick in the Project area and comprises lithic conglomeratic sandstone with mudstone and siltstone beds.

The Cameby Downs Mine has been operating for approximately six years, with excavation of overburden commencing in July 2010 and first coal excavated in August 2010.

The Cameby Downs Mine operates under and involves operation of an open cut coal mine, CHPP and rail load-out infrastructure. The mine is currently approved to extract up to 2.8 Mtpa ROM coal over a mine life of approximately 45 years.

The coal handling and preparation plant (CHPP) was commissioned in November 2010, with the first railing of coal occurring in December 2010.