THE operator pulled on the lever to lower the rice husks onto the conveyor belt and the husks slowly emptied into the cement factory’s burner. Not far away, tons of oil palm shells stood in a pile also ready to be placed on the conveyor belt. Tempo witnessed this combustion process at the PT Indocement cement factory in Citeureup, West Java last week.

Rice husks and oil palm shells. PT Indocement Tunggal Prakarsa has been utilizing both of the