PT Bukit Asam, Tbk (PTBA) is one of the companies engaged in coal mining. One of the mining areas within PTBA's IUP is Pit X. Pit X is a former disposal area that was re-excavated because, based on the feasibility study by the PTBA Planning Team, it is still economically feasible to be mined, so in 2018 mining operations began again in Pit X starting with the loading of old dumped material call…