PT. Bukit Asam, Tbk is a company that is actively engaged in coal mining. One of the pits owned by PT. Bukit Asam, Tbk, namely Pit 2 Banko Barat, will reach its economic limit, so a reserve conservation plan is needed in an effort to maximize the reserves in Pit 2 Banko Barat. The reserve optimization plan is the implementation of mining using the auger mining method as a reserve maximization. …