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• U.S. pEPA RTMENT OF LABOR Z+E~r o~ <br />MINE SAFETY AND HEALTH ADMINISTRATION ,~~ " r'~ <br />9' P <br />Mailing Address: Street Address: .t. _ <br />P.O. Boa 25367, DFC 730 Simms ~ ~.~`;. = <br />Denver, Colorado 80225 Lakewood, Colorado '~ L~ <br />r <br />Coal Mine Safety and Health `'+rr>o+" <br />District 9 <br />January.l5, 1980 <br />William A. Anderson <br />Production Engineer <br />Sheridan Enterprises, Inc. <br />9745 East Hampden Ave. X350 <br />Denver, Colorado 80231 <br />• <br />Dear Mr. Anderson: <br />r ~, i ~ ~. <br />D ~r~y C'~~ <br />~~ J G. N 1 <br />18 ~~0 <br />t <br />Re: .McClain Canyon Test Site ~1 <br />I.D. No. OS-03013 <br />Ianyon Test Site 1;1 <br />I.D. No. 05-03119 <br />Ventilation System and Methane <br />and Dust Control Plans <br />The ventilation system and methane and dust control plans for the <br />subject mines have been approved in accordance with Section 15.316, <br />30 CFR 75. The plans are subject to revision at any time and shall <br />be reviewed by the operator and MSHA at least once every six months. <br />Before any changes are made in the approved plans they shall be sub- <br />mitted to and approved by MSHA prior to implementation. <br />These plans supersede any previously approved plans, and a copy of <br />these plans shall be made available to the miners. <br />Sincerely yours, <br />i ~lrG'~~ <br />ohn W. Bar on <br />District Manager <br />Enclosures <br />• <br />