| The three most common types of surface mining are open-pit mining, strip mining, and quarrying. |
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| Conversely, shallow coal deposits are mined using either open pit or strip mining techniques, depending on the shape of the deposit. |
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| In the 1960s, when strip mining had become the major means of coal extraction, ecology began to count for more. |
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| I can remember days before strip mining, clear cutting and big airports to jet in the skiers. |
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| What strip mining is to nature, the art market has become to culture. |
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| There's strip mining by foreign coastal fisheries, ensuring that those coastal communities that rely on those fisheries remain in a spiral of poverty. |
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| This strip mining operation also changes the shallow groundwater interchanges with the river, and has even obliterated some small tributary watersheds and one-half of the large 1,500-square kilometre Muskeg Creek watershed. |
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| They're joined by Japanese, Polish, Russian, Korean, and other factory ships in strip mining the offshore stocks off the west coast of this country. |
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| With strip mining, mountaintops became mesas. |
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| Cook backed clean-air standards and limits on strip mining. |
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| Mountaintop mining is basically high-altitude strip mining. |
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| Coal mining methods, particularly mountaintop removal and strip mining, have negative environmental impacts, and offshore oil drilling poses a hazard to aquatic organisms. |
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| By 1920, the use of draglines and other modern equipment made strip mining possible and the privately owned Grand Lake area mines produced over 200,000 tons per year. |
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| The limitations of contour strip mining are both economic and technical. |
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| Mountaintop removal combines area and contour strip mining methods. |
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| Strip mining of shallow and extensive coal deposits results in the clearing of large areas. |
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| Strip mining is suitable for extracting materials such as low-grade coal or limestone, which lie close to the surface but may extend for many square km. |
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| Strip mining is done on softer minerals such as clays and phosphate are removed through use of mechanical shovels, track dozers, and front end loaders. |
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| Strip mining exposes coal by removing earth above each coal seam. |
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