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Modular Mining is a privately held company that develops, manufactures, markets, and services mining equipment management systems, headquartered in Tucson, Arizona, U.S.A. Modular's DISPATCH Fleet Management System is available in eight languages, and has been deployed at more than 250 active mine sites; among these are nine of the ten highest-producing surface mines in the world.
Pages in category "Underground mining" The following 39 pages are in this category, out of 39 total. This list may not reflect recent changes. ...
Pages in category "Underground mines in the United States" The following 76 pages are in this category, out of 76 total. This list may not reflect recent changes .
In 2019, 552,400 tonnes of zinc, 71 percent of US mined zinc production, and 4.2 percent of world zinc production, came from Teck Resources' Red Dog mine, the world's most productive zinc mine, in northwest Alaska, near Kotzebue. [2] [3] [1] The mine opened in 1989. [4] The zinc is shipped as concentrate to foreign smelters.
There are two principal phases of underground mining: development mining and production mining. Development mining is composed of excavation almost entirely in (non-valuable) waste rock in order to gain access to the orebody. There are six steps in development mining: remove previously blasted material (muck out round), scaling (removing any unstable slabs of rock hanging from the roof and ...
The San Manuel Copper Mine was a surface and underground porphyry copper mine located in San Manuel, Pinal County, Arizona. Frank Schultz was the original discoverer, in 1879, but the main body of the deposits were discovered by Henry W. Nichols in 1942. The exploration drilling went on from 1943 to 1948, with the first mine shaft built 1948.