Antam, through its subsidiary PT Indonesia Coal Resources, produces coal from the Sarolangun coal mine located in Jambi Province, Indonesia. The Non-JORC coal reserves currently stands at 8.25 million tons with the average value of 5,300 until 5,500 Kcal/kg. Antam currently sells its coal to the export as well as domestic markets.

Antam's Sarolangun coal mine is an open pit mine. Mining is conducted through separation between dirt and the rock with explosives. The overbudern rock is then transported using excavator and trucks. After the coal layer is seen, it is then split and nmined using excavator for further transportation using truck.