The research area is located under PT's mining business license (IUP). Gorby Putra Utama, in the Rawas Ilir district of North Musi Rawas Regency, South Sumatra. This research aims to identify materials indicated as potentially acid-forming (PAF) and non-acid-forming (NAF), as well as factors influencing the formation of acid mine drainage (AMD) in the research area. This study also aims to desc…