Mining Guide - PwC. Mining in Indonesia Investment and Taxation Guide 7 Term Definition PTBA PT Bukit Asam Tbk. (State-Owned Coal Mining Company) PwC PwC refers to the network of member firms of PricewaterhouseCoopers International, and/or one of its member firms, each of which is a separate legal entity RKAB Rencana Kerja dan Anggaran Biaya …