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<br />""~ ENGINEERING & SURVEYING COMPANY <br />BOX 674 • 443 DODGE DELTA. COLORADO. 81416 303-874-7593 <br />7881-1985-Subsidence <br />October 7, 1985 <br />Mined Land Reclamation Poard <br />423 Centennial Puilding <br />1313 Sherman Street <br />Denver, Colorado 8020: <br />ATTN: Jim Pendleton <br />RE: Bear Coal Company, Bear Mine Nv. 3, Subsidence <br />Monitoring <br />Enclosed are the following: <br />A. Letter from Bear Mine regarding two additional subsidence <br />monitoring paints located west of the present mined area. <br />These are in addition to the stations U-8, U-10 and U-11 <br />established in September of this year. <br />B. Map showing the extent of the mining operations and all <br />of the subsidence stations, including the two additional <br />stations referred to in A, above. <br />C. Revised copy of my letter to you dated October 3, 1985. <br />Please mark the first letter void. The revised letter <br />corrects the directions the monuments U-8, U-10 and U-il were <br />located from the requested locations. Also, we have changed <br />the designations of the coordinates from X,Y, and Z to <br />Northing, Easting and Elevation respectively. <br />We will complete the calculations on monitoring U-7, U-2 and <br />U-9 and submit that data ASAP. Also, we will check our <br />calculations on U-8, U-30 and U-11 to be certain there are no <br />errors. <br />Please send us the coordinates of the deisred location for <br />the two new monuments referred to in A. above. <br />~ a~~~r~v~r~ <br />E. LeRoy Black OCT, 8 <br />cc: Bear Coal Company MINED LANO <br />RECUIMATIO(V DIVISION <br />