Jahrian has not been in Banjarmasin for two years. The South Kalimantan coal businessman now spends his time on the move.

The head of coal business Sari Borneo Yufanda does not sleep well. In 2010, he was involved in a feud with another local coal businessman in Banjarmasin. As a result, Jahrian is now a suspect.

"In the coal mining world of Kalimantan, the law of nature is at work. Only the fittest survives," said Rizanie Anshari of the Center