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REP41920
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REP41920
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Entry Properties
Last modified
8/25/2016 12:43:44 AM
Creation date
11/27/2007 9:09:18 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Report
Doc Date
1/31/1994
Doc Name
1993 REVIEW 1ST SEMI ANNUAL SUBSIDENCE REPORT
From
TWENTYMILE COAL CO
To
DMG
Permit Index Doc Type
SUBSIDENCE REPORT
Media Type
D
Archive
No
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<br />~~ Twentymile Coal Company <br />An Attilliate of <br />Cyprus Yampa Valley Coal Corporation <br />~II ~IIII~~I~~~~~~I~ <br />29515 Routt County Roatl N27 <br />Oak Cieek, CO 80467 <br />Phone 1303)879-3600 <br />January 26, 1994 <br />Kent Gorham R~t.~l~~^r; <br />Environmental Protection Specialist ,/ <br />Division of Minerals and Geology AN 31 X034 <br />Office of Mined Land Reclamation ~~i~i-•,-, <br />1313 Sherman Street, Room 215 ~~•~l„ <br />Denver, Colorado 80203 ~'`. <br />RE: Review of 1993, First Semi-Annual Subsidence Report <br />Permit No. C-82-056 <br />Dear Mr. Gorham: <br />Attached, please find a copy of the report prepared by SubTerra, <br />Inc. which provides a review of the angle of draw presented in the <br />above referenced report. As you can see, the angle of draw <br />presented in the above report, which was identified as preliminary, <br />was not correct. The review by Dr. Breeds indicates the angle of <br />draw for monitoring line 3000 is on the order of 14 degrees, while <br />the angle of draw for lime 4000 is on the order of 16 degrees. <br />Hopefully, this will rectify any confusion or concern that could <br />have been generated concerning the angle of draw reported in the <br />1993, First Semi-Annual Subsidence Report. <br />If there are questions, please contact me to your convenience. <br />Sincerely, <br />Richard Mills <br />attachment <br />fJe:c: \wp51 \penniU\subrcp. rcv <br />cr~~us <br />
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