which is sent several miles through a slurry to Kennecott’s Magna smelter, where the gold and other minerals are removed. From there, an even higher copper concentrate streams to the refinery at ...

Rio Tinto, the world's No. 2 mining company by market value, on Thursday reported a drop in iron-ore production and shipments from its Australian mines. Fourth-quarter and full-year output and exports ...

On Kennecott copper mine: "Mined copper production was 35% lower than the fourth quarter of 2023. This was primarily due to reduced head grade caused by geotechnical instabilities in the pit wall ...