PT Bara Alam Utama is a national company engaged in mining and implementing an open-pit mining system. In the period of October 2021, coal mining will occur which is located in pit 2 block 2 which consists of 3 seams. Total coal reserves of seam A, seam B, and seam C are 270,480.75 tons, and the total coal mined is 239,775.81 tons with a total coal recovery of 88.65%. Based on the Decree of the…