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mining: mining, process of extracting useful minerals from the surface of the earth, including the seas. a mineral, with a few exceptions, is an inorganic substance occurring in nature that has a definite chemical composition and distinctive physical properties or molecular structure. (one organic
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quarry mining– an open pit mine where the mineral or rock extracted is commonly used in the building or aggregate industry. some of the more common earth materials quarried in arizona include: sand and gravel, limestone, flagstone, cinders and granite.
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russian miners are calling for the int'l mining community to take part in earth hour by shutting down their mining equipment for one hour next week. 69738 19. news .
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russian miners are calling for the int'l mining community to take part in earth hour by shutting down their mining equipment for one hour next week. 69738 19. news .
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