Newcrest Mining is investing A$1.91 billion to develop an underground panel cave mine to extract the Cadia East orebody as the next major ore source for its Cadia Valley operations in central western New South Wales, 250 km west of Sydney. Engineering and Mining Journal reports: http://www.e-mj.com/index.php/news/leading-developments/355-newcrest-developing-australias-largest-underground-mine.html