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<br /> <br />Mined Land Reclamation <br />Our Primary control <br />sidence stations: <br />Old Sequence <br />D-11-U - Control <br />U-T-2 <br />U1 <br />U5 <br />U9 <br />UA1 <br />U8 <br />D-12-U - Control <br />August 21, 1987 Page 2 <br />loop traverses through the following sub- <br />New Sequence <br />D-11-U - Control <br />UT2 <br />U4 <br />U1 <br />U3 <br />U2 <br />U5 <br />U9 <br />UA1 <br />UB <br />D-12-U - Control <br />The following stations will be monitored by sideshots, angles and <br />distance, but have not been monitored as of the date of this <br />report. We will submit a second report for these stations. <br />U7 <br />U10 <br />U11 <br />U21 <br />U22 <br />The surveys we performed are a second order, Class II Survey <br />using a 1-second theodolite and electronic distance meter. <br />Elevations are obtained by trigonometry. Closure necessary for <br />this class survey is 1 part in 20,000. We have had closures bet- <br />ter than I part in 100,000. <br />Following in Table I is a list of the stations in the main sub- <br />sidence loop with their coordinates and elevations for August, <br />1985, June, 1986, November 1986, July 1987 and the resulting mean <br />values: <br /> <br />