PT Gorby Putra Utama is a company engaged in the coal mining industry. The current problem experienced by PT Gorby Putra Utama is that it is not possible to maximize coal mining in the sidewall area in the GE pit, because the GE pit sidewall area is directly adjacent to the IUP of PT Banyan Koalindo Lestari, so it is necessary to carry out reserve conservation activities in the area. The chosen…