What is open pit minig
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Open-pit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. ... This surface mining technique is used when mineral or ore deposits are found relatively close to the surface of the earth.
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open-pit mining Mining. a method of mining in which the surface excavation is open for the duration of mining activity, employed to remove ores and minerals near the surface by first removing the waste or overburden and then breaking and loading the ore.
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