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Home Q & A Board Biology-Related Homework Help Environmental and Conservation Biology
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Pramila Pramila
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6 years ago
Unlike open-pit mining, in mountaintop coal mining there is no need to fill adjacent valleys with waste rock, because after the removal of coal, the remaining waste rock will occupy less volume than the original mountaintop rock.
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Environment: The Science Behind the Stories, Canadian Edition

Environment: The Science Behind the Stories, Canadian Edition


Edition: 3rd
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RohcodomRohcodom
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6 years ago
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Pramila Author
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6 years ago
Thanks
husne
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Yesterday
This helped my grade so much Perfect
Starfiew
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2 hours ago
Good timing, thanks!
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