Justices gave a mixed reception to Republican-led states and coal companies seeking to bar the EPA from issuing a sweeping plan to reduce carbon emissions from power plants.
ExynAero, a fully autonomous drone for exploring and mapping GPS-denied environments, can be flown down drifts or into stopes to detect and localize any hazardous gasses.
The technical report highlights a robust, long-life operation with average annual production of 72.8 million lb CuEq over the first 15 years of mine life.
Zimbabwe’s plan to develop one of the world’s biggest platinum mines stalled after Impala asked for greater transparency on the ownership of a state-run company.