The progressive alliance of environmentalists and ecologists, Kalikasan People's Network for the Environment (Kalikasan-PNE), sees the killing of Elizer "Boy" Billanes as an effort of the State forces, hired as private armies by big mining companies in Mindanao, to weaken or completely silence the opposition against large-scale mining in Mindanao… activists strongly believe that Billanes was killed due to his strong environmental advocacy and effective leadership in opposing the Tampakan copper-gold mining project, a priority mining project of the Arroyo administration in Far South Mindanao…