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• groundwater levels Sn the area would drop. However, eubsidence <br />does not appear to be a problem over areas of past underground <br />mines in the vicinity of the proposed mine. Hydrologic balance <br />Ss therefore, not eapected to be disturbed in the case of <br />aquifers overlying the coal seam to be mined. <br />u <br /> <br />JFSA-82 <br />