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Copper is a fairly common element, with an estimated concentration of 50–70 ppm (0.005–0.007 percent) in Earth's crust (1 kg of copper per 15–20 tons of crustal rock). [74] A concentration of 60 ppm would multiply out to 1.66 quadrillion tonnes over the 2.77 × 10 22 kg mass of the crust, [ 75 ] or over 90 million years' worth at the 2013 ...
In surface mining, stripping ratio or strip ratio refers to the amount of waste (or overburden) that must be removed to release a given ore quantity. [1][2] It is a number or ratio that express how much waste is mined per unit of ore. The units of a stripping ratio can vary between mine types. For example, in coal mining the stripping ratio is ...
The environmental cost of copper mining was estimated at 3.7 kg CO2eq per kg of copper in 2019. [47] Codelco, a major producer in Chile, reported that in 2020 the company emitted 2.8t CO2eq per ton (2.8 kg CO2eq per kg) of fine copper. [ 48 ]
Bingham Canyon in 1942. Kennecott Utah Copper LLC (KUC), a division of Rio Tinto Group, is a mining, smelting, and refining company. Its corporate headquarters are located in South Jordan, Utah. Kennecott operates the Bingham Canyon Mine, one of the largest open-pit copper mines in the world in Bingham Canyon, Salt Lake County, Utah.
A single wind farm can contain between 2000 and 7000 tons of copper. A photovoltaic solar power plant contains approximately 5.5 tons of copper per megawatt of power generation. [18] A single 660-kW turbine is estimated to contain some 800 pounds (350 kg) of copper. [19]
The discovery and exploitation of the Bolivian tin belt in the 19th century made tin far cheaper, although forecasts for future supplies are less positive. There are as many as 400 different copper and copper alloy compositions loosely grouped into the categories: copper, high copper alloy, brasses, bronzes, cupronickel, copper–nickel–zinc ...
The Bingham Canyon Mine, more commonly known as Kennecott Copper Mine among locals, [3] is an open-pit mining operation extracting a large porphyry copper deposit southwest of Salt Lake City, Utah, in the Oquirrh Mountains. The mine is the largest human-made excavation, and deepest open-pit mine in the world, [4][5] which is considered to have ...
In the United States, copper mining has been a major industry since the rise of the northern Michigan copper district in the 1840s. In 2017, the US produced 1.27 million metric tonnes of copper, worth $8 billion, making it the world's fourth largest copper producer, after Chile, China, and Peru. Copper was produced from 23 mines in the US.
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