The National Union of Coal Mine Workers, SINTRACARBON, has reported the deplorable news of the assassination of Adolfo González Montes, the union's leader and a member of the Barrancas branch committee...SINTRACARBON is the union of workers at the Carbones del Cerrejón company, owned by the multinationals BHP Billiton (Australia), Anglo-American (London) and Glencore/Xstrata (Switzerland). The company mines coal in the Guajira region of Colombia.