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2022613 · A proposed copper and gold mine threatens the biologically and culturally diverse Sepik River Basin in western Papua New Guinea, according to community leaders and conservationists.
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2000326 · The Bajo de la Alumbrera (Alumbrera) copper-gold mine in Argentina is owned and operated by Minera Alumbrera (MAA). It commenced commercial operation in February 1998. The mine is located in Catamarca province, 1,100km north west of Buenos Aires at an altitude of 2,500m. The Argentine state- and provincially-owned mining …
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20121114 · The Olympic Dam is a huge mining centre located in South Australia, 560km north-west of Adelaide. Home to a major oxide copper gold deposit producing copper, uranium, gold and silver, the site hosts an underground mine and an integrated metallurgical processing plant. The project was opened in 1988 by WMC Resources, after …
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202081 · A clean hydrometallurgical process has been developed to efficiently and economically recover selenium, copper, gold, silver and lead from a copper anode slime. The mixture of H 2 SO 4 and H 2 O 2 was demonstrated to be effective for selenium leaching based on their synergistic effects, and the potential synergy mechanism was proposed.
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2020521 · Globally, copper, silver, and gold orebody grades have been dropping, and the mineralogy surrounding them has become more diversified and complex. The cyanidation process for gold production has remained dominant for over 130 years because of its selectivity and feasibility in the mining industry. For this reason, the industry has …
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2020624 · The mining of the final phase of the Grasberg open pit was completed in Q4 2019 and the mine transitioned from open-pit mining to large-scale underground mining. Grasberg Block Cave is estimated to contain proven and probable reserves of 275.2 billion ounces of copper and 14.2Moz of gold as of December 2019.
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Ore is mined and processed at an onsite flotation processing plant capable of treating up to 24 million tonnes per annum (Mtpa). The plant currently recovers copper, gold and silver into a saleable concentrate. The primary ore is crushed and ground using Semi-Autogenous Grinding and Ball mills to a final grain size of approximately 180 microns.
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Mining in the Philippines began around 1000 BC. The early Filipinos worked various mines of gold, silver, copper and iron. Jewels, gold ingots, chains, calombigas and earrings were handed down from antiquity and inherited from their ancestors. Gold dagger handles, gold dishes, tooth plating, and huge gold ornamets were also used.
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202011 · The Gajah Tidur copper-(molybdenum) and Main Grasberg copper-gold porphyry centers overlap in space and formed within ~250,000 years of one another. However, their distinct metal endowment, depth of emplacement, and geometry indicate that they formed under different magmatic, hydrothermal, and structural conditions, which are …
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