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Southfield Mire <br />Map 1 <br />The extensive pillaring of the Southfield Mine has caused large areas of the surface to subside as <br />documented by the monitoring surveys.3With at least 4055 feet of Newlin Creek crossing these <br />subsidence areas it must be assumed that the stream bed was affected by the pillaring. It must also be <br />assumed the old mines in the seams above the Southfield Mine were affected by this subsidence. The <br />six subsidence holes near the Thompson houses as shown on Map 2, repaired in 2012, are further <br />evidence of the resulting instability and fracturing of the overburden rock formations leaving the surface <br />fragile .4 Note the close proximity of these subsidence holes to Newlin Creek. <br />