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. ~~~ <br />blue <br />ribbon <br />cool <br />company <br />~, .. _~ ., t ,y <br />:uf~. !~D Lf.~~~ <br />Susan Mowry <br />Reclamation Specialist <br />Colorado Mined Land Reclamation <br />1313 Sherman Street, Room 423 <br />Denver, CO 80203-2273 <br />Re: File # C-047-81, Bench stability monitoring <br />Dear Susan: <br />iii iiiiiiiiiiiiiiii <br />999 <br />blue ribbon coal company <br />p. o. box 58 <br />delta, Colorado 81416 <br />(303)874-7561 <br />July 1, 1985 <br />Four bench stability monuments were installed June 24, 1985, in the lower bench <br />(S-1 thru S-4) and 4 temporary monuments were installed June 28, 1985. The <br />temporary monuments were installed at the request of Jim Pendleton on his June <br />26 inspection, These temporary monuments area 6' roof bolt driven into the <br />ground 5', Permanent monuments will be installed near these upon completion <br />of the cover of the bench. The initial survey information from a survey taken <br />today is as follows <br />Monument Appr~cimate north <br />S-1 15,359 <br />S-2 15,265 <br />S.r3 15, 162 <br />S-4 I5, 076 <br />TS-5 15,377 <br />TS-6 15,282 <br />TS-7 15,185 <br />TS-8 15,092 <br />Approximate _e3st Elevation <br />23,626 6401.38 <br />23,618 6396.23 <br />23,572 6385.83 <br />23,604 6380.82 <br />23,905 6473.47 <br />23,880 6476.66 <br />23,850 6476.52 <br />23,822 6475.38 <br />These coordinates vary somewhat from the locations shown on the Bench Monitoring <br />Map submitted April 30, 1985. The lower bench monuments were dependent upon <br />the access of the drill, and the temporary monuments were dependent upon the <br />actual extent of the bench fill, <br />If there are any questions , let me know. <br />Yours ly, <br />f~`~/ G~~j~~ <br />Lanfy/M, Reschke, <br />Mine Engineer <br />cc: Jim Stover, Powderhorn Coal Company <br />