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OpenStudy (justuu):
Medal How is coal mined? underground mines only surface mines only underground and open pit
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OpenStudy (justuu):
@Toriii
OpenStudy (anonymous):
underground mines only because coal is found underground rarely above ground
OpenStudy (anonymous):
underground only
OpenStudy (nevermind_justschool):
How is coal mined??!!! is this a serious question! Please stop it if you are asking this and this is a test its cheating!
OpenStudy (anonymous):
I blocked this guy. these are stupid questions and take only 2 braincells to answer. I guess he only has 1.
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