A leader of an anti-mining group fighting for the stoppage of mining operations in Compostela Valley was brutally killed Tuesday night by unidentified suspects…PhilCo mining and other mining companies...[have] been blamed for the… destruction of the environment which has also affected the livelihood of the people…[The environmental group] Panalipdan…has blamed the military for Sarmiento’s killing due to his anti-mining advocacies…