Most of the coal currently used by the DRP power plants. Because of good quality, DRP coal sold in states that set limits on air pollution strict standard as Japan. These customers choose the grade of coal DRP nitrogen, sulfur, and a relatively low content of the smoke.
DRP managing logistics and supply of coal through the FIFO system integrated throughout penibunan mine so that quality control maintained throughout the DRP subsidiaries. Coal is systematically monitored by the system software and logistics coal market