“The coal assets managed by Coal & Allied in the Hunter Valley are truly world-class and offer a large, contiguous footprint within the most attractive sections of the coal district,” said Chris Salisbury, managing director, Rio Tinto Coal Australia. The coal assets are shallow, thick seams with little geological faulting.

“This discovery of greater coal reserves and resources is the result of more than a year’s work,” Salisbury said. The update is based on a rigorous examination of all of the Hunter Valley leases that involved analyzing a vast legacy dataset gathered over decades from approximately 13,000 drill holes; transforming the strategic mine planning processes and tools used to estimate reserves; and adopting more efficient resource estimation methods.