Arizona Sonoran, Nuton partner

Copper developer and near-term producer Arizona Sonoran Copper has entered into a one-year exclusivity period of metallurgical testing with Nuton, a Rio Tinto venture. Arizona Sonoran said the exclusivity was triggered by successfully modeling the Cactus and Parks/Salyer ore samples and achieving the previously contemplated indicative metallurgical recoveries of at least 72% (copper recovery to cathode), under an investor rights…

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Rio Tinto investing US$188M for Alma upgrade project

Rio Tinto said it has earmarked US$188 million to upgrade its Alma smelter in Lac-Saint-Jean, Quebec to boost its production by 202,000 tonnes annually. The project, which is projected to be commissioned in the first quarter of 2025, will include an expansion of the existing casting center to accommodate new equipment, including a casting pit and furnaces – which in…

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Rio Tinto, Star Diamond puts Star-Orion on ice

Star Diamond and partner Rio Tinto have confirmed they will place the Star-Orion diamond project in Saskatchewan, Canada, on care and maintenance until the end of this year. The two, which as a joint venture are known as Fort à la Corne, met recently and Rio Tinto Exploration Canada exercised its voting power as 75% interest holder to place the…

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Miners turn to unique leaching processes for copper extraction

Bacteria and newly developed chemicals provide an alternative to conventional leaching. Edited by Josephine Patterson Due to copper prices nearly doubling in the past two years, miners like Rio Tinto and Freeport-McMoRan have begun to use new leaching technologies to extract low concentrations of the in-demand product from waste rock, reported Reuters.  Miners aim to use bacteria or other newly…

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Sustainability On Track

Wabtec flexing its muscles – and horsepower – for the future of emission reduction with battery locomotives. By Donna Schmidt The year 2022 is barely three months old, and already it’s been a big year for transport group Wabtec. The company has sealed not just one, but two major orders from global operators for its newest technology – the FLXdrive…

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