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i <br />TABLE 1 <br />SOUTHFIELD MINE <br />SEMI-ANNUAL SUBSIDENCE MONITGRING DATA SUMMARY <br />(NOVEMBER, 1990 THROUGH APRIL, 1551) <br />SOUTH SUBSIDENCE GRID <br />Survey Date: 9191 <br />---------- -------------- <br />CHANGE FROM -------------------- <br />ORIGINAL SURVEY ----------------------------------- <br />CHANGE FROM PRECEEDING SURVEY <br /> Survey date: 3/83 Survey date: 12/90 <br /> HORI20NTAL <br />STATION ELEVATION DISTANCE ELEVaTION <br />NG. <FT) cFT) <FT) <br />1 -0.72 0.14 -0.01 <br />2 -0.80 O.IS 0.00 <br />3 -1.08 0.25 -U.O2 <br />9 -1.32 0.19 0.00 <br />5 -0.72 0.18 -0.01 <br />6 -0.82 0.21 0.00 <br />7 -U.7O 0.12 -0.02 <br />8 -0.71 0.08 0.00 <br />9 -0.65 0.19 -U.01 <br />10 -0.67 0.13 -0.01 <br />11 -0.76 0.22 -0.01 <br />12 -1.04 U.27 -0.02 <br />13 -1.96 0.12 -0.01 <br />14 -1.96 0.22 -0.02 <br />25 -2.34 0.35 -0.04 <br />16 -0.48 0.16 -0.01 <br />17 -0.34 0.14 -0.02 <br />18 -0.22 0.21 -0.01 <br />19 ~ -0.17 0.51 -O.O'r <br />20 -0.12 0.19 -0.01 <br />11 -0.07 0.17 U.O1 <br />22 -0.06 0.24 -O.U1 <br />23 -4.04 0.11 -0.01 <br />