Fishermen and villagers work together to clean up the Mangrove area that is contaminated by an oil spill near the Pertamina oil refinery installation in Balikpapan bay, East Kalimantan. An oil spill off Balikpapan bay in Borneo island that led to five deaths and the declaration of a state of emergency, was caused by a burst undersea pipe belonging to Indonesia's state oil company Pertamina.