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Copper Oxide Mining Reserves

Old Pueblo Mine Copper Oxides - Mining Collections

The & 39;Tucson Mountains - Old Pueblo Mine Copper Oxides& 39; file is part of the John E. Kinnison mining collection. Kinnison spent over twelve years with ASARCO. He was a consultant to the mining industry from 1973 to the early 1980s. He specialized in porphyry copper exploration in the Southwest U.S. but also worked in Mexico Canada and the ...

Reserves - 12/31/20 1 - Hecla Mining

San Sebastian lead zinc and copper grades are for 385000 tons of inferred resource within the Middle Vein and the Hugh Zone of the Francine Vein. 16 Inferred open-pit resources for Fire Creek calculated November 30 2017 using gold and silver recoveries of 65% and 30% for oxide material and 60% and 25% for mixed oxide-sulfide material.

Copper: Eight companies with promising assets - MINING.COM

This inventory includes an oxide component of 349.6 million indi ed tonnes grading 0.34% copper 0.32 gram gold and 12.6 gram silver and 103.9 million inferred tonnes at 0.26% copper 0.32 gram ...

Project Overview Orla Mining Ltd.

The Mineral Reserves are not in addition to the Mineral Resources but are a subset thereof. All Mineral Reserves stated above mining dilution. 5. Associated metallurgical gold recoveries have been estimated as 86% for Oxide and vary according to grade for Mixed material at both the La Pava and Quema deposits. 6.

World Copper Reports 426 Million Tonne Oxide Copper Resource ...

The cutoff is calculated based on a long-term copper price of US$3.50/lb; assumed combined operating ore costs of US$6.50/t process general and administrative and mining taxes ; refining ...

Mineral Resources Cardero Resource Corp.

Mining ore and waste $1.8/ton processing $2.89/ton plus $0.12/lb copper SX/EW General and Administrative $0.80/ton oxide recovery 73% transition recovery 70% and Cu price $2.00/lb; Columns may not total due to rounding

Major Mines and Projects - Mining Intelligence and News

* Oxide and sulphide leaching streams with 330 ktpa effective hode capacity * 3.5 Mtpa of concentrate shipments * Delivery of OGP1 and OLAP2 supporting our concentrate and leaching strategy. 3 concentrator plants extract copper concentrate from sulphide ore by flotation extraction process. 2 solvent extraction plants produce copper hode.

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