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Kennecott officials closely monitor movements in the107-year-old mine– which produces 25 percent of thecopperused in theUnited States– and they recognized signs of increasing instability in the months before the slide, closing and removing a visitor center on thesouthedge of the 2.8-mile-wide, 3,182-foot-deep open pit, which the company claims is the world’s largest manmade excavation.
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Thisminewas designed specifically for theNorthSeaMineBarrage of World War I. However, as shown above, it was still being used operationally as late as 1978. On 17 October 1917, the Secretary of the Navy authorized the construction of 100,000minesof this type at a cost of $40,000,000 (40 million dollars).More Details
Eagle-Vision is a new solution on theminingmarket featuringhighimage resolution, panoramic coverage and photo-geocoding capabilities. ... The Chuquicamatamineis a large open pitcopper minelocated 1,650kmnorthof Santiago, Chile. Themine, popularly know ... IDS GeoRadarNorth America. 14828 West 6th Avenue, Unit 12-B Golden. Colorado ...More Details
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General Cable is recognized as a world-class leader in the development and design of medium-voltage industrial cables. With its extensive technical and engineering expertise and a state of the art compound facility, General Cable is committed to using materials with the best overall properties to create the most comprehensive line of industrial power cables to meet your design requirements ...More Details
High-frequencybearing and shaft currents.High-frequencycommon mode currents can also flow from the motor frame (the stator) through the bearings to the shaft on the driven machinery to ground through the capacitance between the bearings and the outer race. These bearing currents can cause electro-discharge machining (EDM) to occur.More Details
Furthermore,copperbrazing material andcopperfoils are being gradually used in vacuum electronic devices such ashigh-frequencytubes, magnetron, andcopperprinted circuits. Asia Pacific dominated the globalcoppermarket, holding over 65% of the market share in 2017. It was followed byNorth Americaas well as Europe.More Details
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