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The mine has one of the largest copper reserves in the United States and in the world. In 2018, the deposit had estimated proven and probable reserves of 3,369 million tonnes of ore grading 0.23% copper and 0.02% molybdenum , along with an additional resource of 1,378 million tonnes of mineralized material at 0.17% copper and 0.02% molybdenum.
The Sierrita Mountains (English: "Little Mountains") is a minor mountain range about 40 mi (60 km) southwest of Tucson, in Pima County, Arizona. Historically, the area has seen extensive mining and ranching activity: several ranches, abandoned mines, and the large Sierrita Mine are located in the area. The highest point in the mountains is ...
Porphyry copper deposits represent an important resource and the dominant source of copper that is mined today to satisfy global demand. [6] Via compilation of geological data, it has been found that the majority of porphyry deposits are Phanerozoic in age and were emplaced at depths of approximately 1 to 6 kilometres with vertical thicknesses on average of 2 kilometres. [6]
Morone attributed the two deaths to the Eaton Fire, which erupted Tuesday night. There were a significant number of injuries, he said, and more than a hundred buildings had burned.
The Palisades Fire and the Eaton Fire are now among the top 5 most destructive wildfires ever recorded in California. At least 11 people are dead and more than 10,000 homes and other structures ...
The moisture helps fire crews to slow the wildfires that started burning on January 7. More than 28 people have died in the blazes. The major L.A. fires are all at least 80 percent contained.
In 1986, Cyprus acquired the Sierrita copper and molybdenum mine near Tucson, Arizona. In July 1988, Cyprus Minerals bought the Inspiration mine and smelting complex in Miami, Arizona . [ 2 ] With the expiry of an agreement to purchase electricity at a favorable rate from the Salt River Project , Cyprus Minerals installed an ISASMELT furnace in ...
Editor's Note: This page is a summary of news on the LA fires for Thursday, Jan. 9. For the latest updates on the Los Angeles wildfires in California, please read USA TODAY'S live updates for ...