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MOUNTAIN COAL COMPANY WEST ELK MINE SUBSIDENCE UPDATE <br />PRE-MINING <br />SURVEY #1 <br />APR. 1985 <br /> OCTOBER 1997 <br />SUBSIDENCE POINT # 1 2 3 <br />NORTHING 395478.26 395475.16 395471.62 <br />EASTING 1442168.80 1442218.42 1442269.11 <br />ELEVATION 7867.19 7846.86 7811.65 <br />----------------- ------------ <br />PRE-MINING NORTHING <br />SURVEY #2 EASTING <br />OCT. 1985 ELEVATION <br />AVERAGE OF <br />PRE-MINING <br />SURVEYS <br />POST-MINING <br />SURVEY #17 <br />OCT. 1993 <br />POST MINING <br />SURVEY #18 <br />JUL. 1994 <br />NORTHING <br />EASTING <br />ELEVATION <br />395478.14 <br />1442168.21 <br />7867.24 <br />395478.20 <br />1442168.51 <br />7867.22 <br />395471.50 <br />1442268.96 <br />7811.66 <br />395471.56 <br />1442269.04 <br />7811.66 <br />NORTHING 395475.17 395472.20 395469.49 <br />EASTING 1442165.36 1442214.75 1442266.23 <br />ELEVATION 7859.83 7838.91 7803.77 <br />NORTHING <br />EASTING <br />ELEVATION <br />395475 00 <br />1442165.01 <br />7859.80 <br />395469.38 <br />1442265.85 <br />7803.74 <br />-------------- <br />-------------- <br />POST MINING --- ------------ <br />--- ------------ <br />NORTHING ------------ <br />------------ <br />395475.34 ----------- <br />----------- <br />395472.40 ------------ <br />------------ <br />395469.58 <br />SURVEY #19 EASTING 1442164.91 1442214.38 1442265.78 <br />OCT. 1994 ELEVATION 7859.78 7838.79 7803.62 <br />POST MINING <br />SURVEY #20 <br />AUG. 1995 <br />NORTHING <br />EASTING <br />ELEVATION <br />----------------- --------- <br />----- ---------- ------- <br />POST MINING NORTHING <br />SURVEY #21 EASTING <br />OCT. 1995 ELEVATION <br />POST MINING NORTHING <br />SURVEY #22 EASTING <br />JULY 1996 ELEVATION <br />395474.95 <br />1442164.38 <br />7859.84 <br />395474.91 <br />1442164.60 <br />7859.98 <br />395474.98 <br />1442218.04 <br />7846.87 <br />395475.07 <br />1442218.23 <br />7846.87 <br />395471.92 <br />1442214.48 <br />7838.91 <br />395471.80 <br />1442214.23 <br />7839.01 <br />395471.87 <br />1442213.98 <br />7839.08 <br />395474.92 395471.90 <br />1442164.60 1442214.11 <br />7859.98 7839.10 <br />395469.09 <br />1442265.90 <br />7803.84 <br />395469.30 <br />1442265.46 <br />7803.95 <br />395469.28 <br />1442265.58 <br />7804.01 <br />------- <br />POST MINING - -------- - <br />NORTHING --------- <br />395475.06 ----- <br />395472.11 --- <br />395469.49 <br />SURVEY #23 EASTING 1442164.63 1442214.10 1442265.64 <br />OCT. 1996 ELEVATION 7859.97 7839.04 7803.97 <br />- ------- <br />POST MINING --------- <br />NORTHING ---------- <br />395475.06 -------- <br />395471.89 --- <br />395469.37 <br />SURVEY #24 EASTING 1442164.63 1442214.12 1442265.56 <br />JULY 1997 ELEVATION 7859.97 7839.29 7804.20 <br />----------------- ------------ <br />- ---------- ---------- <br />POST MINING NORTHING <br />SURVEY #25 EASTING <br />OCTOBER 1997 ELEVATION <br />----------------- ------------ <br />----------------- ------------ <br />SUBSIDENCE (CURRENT) <br />from July 1997 to Oct. 1997 <br />(-) Indicates Rise in Elevation <br />----------------- ------------ <br />TOTAL SUBSIDENCE <br />from average pre-mining surveys <br />to OCT. 1997 <br />'395475.06 395472.12 <br />1442164.63 1442214.22 <br />7859.97 7839.15 <br />------------ ----------- <br />------------ ----------- <br />0.00. 0.14 <br />7.24 7.72 <br />Page 1 <br />395469.41 <br />1442265.61 <br />7804.00 <br />0.20 <br />7.65 <br />SUBDOC97.XLS <br />