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The Baldy Mining District was one of the largest gold producing districts in New Mexico. [1] ... Copper, Gold By 1946, 1000 tons of ore were produced. This ore was 20 ...
The mine was started as the Chino Copper Company in 1909 by mining engineer John M. Sully and Spencer Penrose, [1] [2] [3] and is currently owned and operated by Freeport-McMoRan Inc. subsidiaries. The area where the mine is located is at an average elevation of 5,699 feet (1,737 m).
The Santa Rita mine in southwest New Mexico was the first copper mine in what is now the western United States. Spaniards began mining copper there about 1800. The district still produces copper, from the large Chino Mine open pit. Native Americans had mined turquoise associated with the copper deposits at present-day Tyrone in Grant County ...
The New Afton mine is a Canadian gold and copper mine located 17 kilometres (11 mi) west of the city of Kamloops in British Columbia. The mine is underground and is owned and operated by New Gold Inc. In 2019, the mine produced an output of 79,000,000 pounds (36,000,000 kg) of copper, and 69,000 ounces of gold.
As of January 2020, Mount Polley's Proven and Probable Reserves were 53.8 million tonnes of ore grading 0.34% copper, 0.30 grams per tonne gold and 0.9 grams per tonne silver, equating to 400 million pounds of copper, 517,000 troy ounces of gold and 1.55 million troy ounces of silver. [3] Mount Polley Mining Company reopened the mine in July 2022.
Production from 1908 to 1978 was more than 4 billion pounds (1.5 million tonnes) of copper and 2,700,000 troy ounces (84 t) of gold, and 2018 annual production of 106 million pounds (48,000 tonnes) of copper and 37,100 troy ounces (1.15 t) of gold. Published ore reserves at Robinson as of end of 2017 were 565,400,000 pounds (256,500 t) of copper.
This page was last edited on 16 November 2024, at 12:16 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Most gold is mined as native metal and can be found as nuggets, veins or wires of gold in a rock matrix, or fine grains of gold, mixed in with sediments or bound within rock. The iconic image of gold mining for many is gold panning, which is a method of separating flakes and nuggets of pure gold from river sediments due to their great density ...