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The top documents tagged [mining profitable]
FOSSIL FUELS III Coal. Should the use of coal in America be expanded? 1.Yes 2.No
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Group A Group B Group C 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 Resourceful Resources Resourceful
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FOSSIL FUELS III
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