PTBA Annual Report | PDF | Revenue | Coal
1991 - 1995. into an Indonesian state From 1991 to 1995, on the. owned company which behalf of the Indonesian. was called "PN government, PTBA acted as. 2017. Tambang Arang Bukit the domestic coal regulator Established a holding. Asam" ("TABA"). PN is for Coal Contract of Works company of mining. the abbreviation for ("CCoW ...