There is thought to be some illegal mining of diamonds and gold in the area.
The explosives were used for illegal mining which had been underway in the colliery.
It was reported that the explosion was a result of illegal mining.
So people are compelled to go to illegal mining, the way our ancestors did.
The bears are threatened due to illegal mining in fragmented areas of the forests.
With plenty of coal seams near the surface, illegal mining has been a long-standing problem in the area.
Some illegal mining took place in the village of Lupilichi in the 1990s.
He is an opponent of illegal mining and logging operations in the Philippines.
In recent years illegal mining has caused ecological damages to the river.
Although the company has now withdrawn, the trails it cut into the park have opened the area up to illegal mining, hunting and logging.