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WEST ELK MINE B-SEAM SUBSIDENCE UPDATE THNOUGH JULY 199] <br />SUBSIDENCE POINT p E1 E2 E3 E4 ES NO N1 N2 N3 <br />PRE-MINING NORTHING 395419.34 395413.06 39540fi.39 395399.85 395394.27 396396.96 396496 .56 396596.06 396699.26 <br />B SEAM FASTING 14430fi6.29 14431fi6.15 1443265.63 1443365.85 1443465.69 1442073.]0 1442080.29 1442086.65 1442093.35 <br />SURVEY p1 ELEVATION ]476.75 7448.15 7438.49 ]431.09 7440.39 7881.89 7876 .54 7872.69 ]872.fi7 <br />0CT. 1991 <br />PRE~MINING NORTHING 395419.31 395413.02 39540fi.29 395399.88 395394.02 396398.79 396498 .48 396598.00 396fi9B.09 <br />B BEAM FASTING 1443066.11 1443165.88 1643265.38 1443365.89 14434fi5.52 1442073.85 1442080.34 1442086.01 1442093.52 <br />SURVEY q2 ELEVATION 7476.87 ]448.23 ]438.62 ]431.19 7440.50 ]881.86 ]8]6 .54 ]8]2.]0 ]872.69 <br />JUNE 1992 <br />AVERAGE OF NORTHING 395419.33 395413.05 395406.34 395399.8] 395394.15 396398.88 39fi49B .52 396598.03 396698.18 <br />PRE-MINING FASTING 1443066.20 1443166.02 14432fi5.51 1443365.8] 1443465.61 1442073.78 1442080 .72 1442088.33 1442093.44 <br />B SEAM ELEVATION ]4]6.81 ]448.19 7438.56 7431.14 7440.45 ]881.88 7876 .54 ]8]2.70 7872.68 <br />POST-MINING NORTHING 395418.96 395412.57 395405.85 395399.26 395393.36 396398.52 396498 .19 39fi597.66 396697.53 <br />B SEAM FASTING 1443066.2] 1443165.97 1443265.88 1443365.69 1443465.05 14420]3.60 1442079 .87 1442086.18 1442092.90 <br />SURVEY p3 ELEVATION 7476.98 ]448.39 ]438.]7 ]431.32 7440.64 ]880.96 78]5 .13 ]8]0.64 ]8]0.10 <br />OCT. 1992 <br />POST~MINING NORTHING 395418.67 395412.40 395405.56 395399.03 395393.41 39fi39fi.60 396496 .53 396596.13 396696.22 <br />B-SEAM FASTING 1443066.21 1443165.87 14432fi5.62 1443365.85 1443465.05 1442072.09 1442078 .55 1442084.48 1442091.76 <br />SURVEY p4 ELEVATION 7477.41 ]448.82 7439.23 ]431.81 7441.14 ]B]fi.50 7871 .24 7867.4] ]867.47 <br />JUL. 1993 <br />POST-MINING NORTHING 395419.18 395412.86 395406.07 395399.62 395393.95 396396.51 396496 .53 396596.06 396696.12 <br />B~SEAM FASTING 1443066.10 1443165.94 1443265.55 1443365.64 1443465.20 1442070.97 1442077 .63 1442084.10 1442090.73 <br />SURVEY p5 ELEVATION 7476.]9 ]448.18 ]438.58 7431.15 ]440.50 ]875.81 7870 .58 7866.71 7Bfi6.84 <br />OCT. 1993 <br />POST~MINING NORTHING 395419.02 n 395412.70 395405.91 395399.46 c395393.52 39fi39fi.40 396496 .20 396595.84 396695.80 <br />B SEAM FASTING 1443065.84 1443165.59 1443265.20 1443365.29 1443465.53 1442070.61 1442076 .91 1442083.31 1442090.40 <br />SURVEY p6 ELEVATION 7476.79 ]448.20 7438.61 7431.19 7440.53 ]8]5.]8 7870 .54 7866.]0 ]866.82 <br />JUL. 1ss4 <br />POST~MINING NORTHING 395419.53 395413.21 39540fi.25 395399.96 395394.12 396396.63 39fi49fi .54 396596.04 396696.24 <br />B-SEAM FASTING 1443065.98 1443165.84 1443265.80 1443366.60 1443465.03 14420]0.30 1442076 .80 1442083.29 1442090.00 <br />SURVEY p] ELEVATION ]4]6.39 ]447.75 7438.12 ]430.]0 ]440.02 7875.82 7870 .54 ]866.]1 ]866.81 <br />OCT. 1994 <br />POST-MINING NORTHING 395418.56 395411.89 395404.74 395398.07 395392.03 396396.19 396496 .34 396595.48 396695.85 <br />8 SEAM FASTING 1443066.03 1443165.74 14432fi5.45 1443365.44 1443465.19 1442070.1fi 14420]6 .69 1442083.20 1442090.13 <br />SURVEY p8 ELEVATION ]477.15 ]448.54 7438.90 7431 4B ]440.82 ]8]5.84 7870 .62 7866.83 78fifi.94 <br />AUG. 1995 <br />POST~MINING NORTHING 395419.19 39541290 39540fi.Ofi 395399.]2 '395393.80 396396.35 396496 .22 396595.85 796695.89 <br />&SEAM FASTING 1443065.60 144316537 1443264.89 1443365.02 1443465.02 14420]0.31 1492076 .85 1442083.26 1442090.13 <br />SURVEY p9 ELEVATION ]4]].33 7448.71 ]439.12 ]431.70 7441.02 ]8]5.97 7870 .68 7866.85 7Bfi6.96 <br />OCT. 1995 <br />POST~MINING NORTHING 395419.10 395412.82 39540fi.08 395399.80 395394.30 i 396396.37 396496 .32 396595.84 396695.94 <br />B~SEAM FASTING 14430fi5.64 1443165.41 1443264.92 1443365.33 1443465.1] 1442070.04 1442076 .87 1442083.19 1442089.95 <br />SURVEY p10 ELEVATION ]47].62 7449.04 ]439.45 ]432.03 7441.35 ]8]5.94 7870 .]3 7866.92 7867.03 <br />JULY 1996 <br />POST~MINING NORTHING 395419.27 395412.92 395406.30 395399.75 395394.14 396396.48 396496 .32 396595.90 39fifi9fi.04 <br />B SEAM FASTING 14430fi5.70 1447165.48 14432fi5.06 1443365.26 1443465.05 14420]0.14 1442076 .69 1442083.20 1442089.89 <br />SURVEY pl l ELEVATION 7477.56 ]448.99 7439.39 7431.99 ]441.29 7875.93 ]870 .70 ]866.8] ]866.96 <br />0CT. 1996 <br />POST-MINING NORTHING 395418.99 395412.65 395405.72 395399.10 395393.73 39639fi.45 39fi496 .38 396595.91 396695.99 <br />B-SEAM FASTING 1443065.72 1443165.31 1443264.96 1443365.16 1443464.96 1442070.24 1442076 .84 1442083.24 1442090.23 <br />SURVEY p12 ELEVATION 7477.44 7449.16 7439.55 ]432.14 ]441.46 ]8]5.89 7070 .61 7866.01 7Bfifi.93 <br />JULY 199] <br />SUBSIDENCE ICURRENTI <br />Irom OCT. 1996 to JULY 1997 0.12 -0.17 0.16 -0.15 0.17 0.04 0 .09 0.06 0.03 <br />1~1 Indicates Rise in Elevation <br />TOTAL SUBSIDENCE -0.63 0.9] -0.99 1.00 1.02 5.98 5 .93 5.88 5.75 <br />Irom average Pre~mininp survey <br />to JULY 1997 <br />AV N. 10/92 N. ---=___ ==~==0.36 - -===0.48 = ~~==0.49 - -===0.61 ==-==0J9 = _===0.35 - -===0 .33 ===--0.3] c=9'0.65 <br />AV E. ~ 10/92 E. -0.07 0.05 ~0.3] 0.18 0.55 0.17 0 .44 0.15 0.54 <br />AV EL - 10/92 E <br />_____~_ l <br />_______ 0.1 ] <br />_e...== 0.20 0.22 -0.18 0.20 0.91 1 .41 2.05 2.58 <br /> <br />10/92 N.~ 7193 <br />N. <br />0.29 _ <br />0.17 ______ _ <br />0.29 ______ <br />0.23 ~______ <br />0.05 _ <br />1.92 ___~_ <br />1 ~ <br />.66 v-~..=_ <br />1.53 <br />1.31 <br />10/92 E. - 7/93 E. 0.06 0.10 0.36 -0.16 0.00 1.51 1 .32 1.70 1.14 <br />Page 1 SUBOC968.%LS <br />