| 21. | Some of the parkland was stripped off in the past by strip mining.
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| 22. | She is involved in the fight against strip mining near the Okefenokee Swamp.
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| 23. | But the strip mine where he works closed this year, leaving him unemployed.
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| 24. | It's 2176, and Mars is being used as a strip mine.
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| 25. | SMCRA grew out of a concern about the environmental effects of strip mining.
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| 26. | Strip mines were established in the watershed in the middle of the 1900s.
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| 27. | Harmful effects from strip mining and clear cut logging are still being corrected.
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| 28. | "Smokey the Bear says, " Strip mining prevents forest fires ."
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| 29. | Maury Island strip mine could cause killer whales to quit south sound ).
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| 30. | Mountaintop removal, a form of strip mining, is not new, either.
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