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International Journal of Mining Science and Technology > 2015 > 25 > 1 > 31-35
International Journal of Mining Science and Technology > 2014 > 24 > 2 > 183-189
International Journal of Mining Science and Technology > 2015 > 25 > 1 > 31-35
International Journal of Mining Science and Technology > 2014 > 24 > 2 > 183-189