Roadblocks by informal miners are disrupting transport of copper from some mines in Peru, including those owned by MMG and Hudbay Minerals, said people briefed on the matter. Artisanal miners are staging blockades in one of the world’s biggest copper-producing nations to push for a regulatory framework that caters specifically to small-scale mines. While on-site operations are unaffected by the protests, transport of semi-processed copper from MMG’s Las Bambas and Hudbay’s Constancia have been interrupted, said the people, asking not to be identified because they are not authorized to speak publicly. Spokespeople at ... (full story)