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open-pit mining |
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open-pit mining [¦ō·pən ¦pit ′mīn·iŋ] (mining engineering) Extracting metal ores and minerals that lie near the surface by removing the overlying material and breaking and loading the ore. Also known as open-cast mining; opencut mining. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| based consortium covers the remaining mines in the United States, including the big open cast mines in the west and the high-performance underground mines in the east, with a total annual production of 65 million tons. The group operates over 43 open cast mines worldwide and its production volumes over the past ten years have been growing at a compound annual rate of seven percent. |
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