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-- ~~ ~ ~ 1111111111111111111 <br />~~ "' ENGINEERING & SURVEYING CO9MPANY <br />BOX 674 • 443 DODGE DELTA. COLORADO. 81416 303-874-7593 <br />7881-1985-Subsidence <br />October 3, 1985 <br />Revised October 7, 1985 <br />Mined Land Reclamation Board <br />423 Centennial Puilding <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />ATTN: Jim Pendleton <br /> <br />OCT~ 8 ~!b-i <br />MINED LANO <br />RECUIMATION OIV1310N <br />RE: Bear Coal Company, Bear Mine No. 3, New Subsidence <br />points U-8, U-10 and U-11. <br />On September 4, 2985, Ute was instructed to attempt to set <br />three new Subsidence Monitoring Sations. Stations U-10 and U- <br />11 were to be set regardless, and U-8 was desired if <br />practical. Coordinates were given for the preferred location <br />of the stations as follows: <br />Station <br />U-8 <br />U-10 <br />U-11 <br />Northino <br />402,030 <br />402,400 <br />401,900 <br />Eastina <br />1,441,820 <br />1,440,860 <br />1,441,080 <br />Work was sorted to set the stations. We were interupted and <br />delayed several times due to rain. The roads into the area <br />are from the soutfi in the Minnesota Creek Drainage. Even a <br />small amount of rain requires the use of chains which tears <br />up the roads. <br />Allowing for weather did cost several days, however we have <br />set and established coordinates on the three new stations. <br />In addition, we monitored U-2, U-7 and U-9. Point U-2 falls <br />within the 25 degree angle from the active mined section. <br />Point U-9 is approximately 30 degrees, so we monitored it <br />also. Results of monitoring U-2 and U-9 will be submitted in <br />a separate letter. <br />The new points U-8, U-10 and U-11 were set as follows (actual <br />in place coordinates): <br />Station Northing Eastina Elevation <br />U-8 402,237.4188 1,441,721.192 7363.61 <br />U-10 402,420.9882 1,440,865.017 6774.13 <br />U-11 401,405,4091 1,440,865.230 7428.63 <br />