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• <br />U. S. Department of Labor <br />July 16, 1980 <br />Mr. John M. Walters <br />Field Mining Engineer <br />Sheridan Enterprises <br />9745 East Hampden Avenue <br />No. 350 <br />Denver, Colorado 80231 <br />Pline 6aiery and Health Administration <br />P 0 Sox 25367 `~ C ~•' <br />Denver, Colorado 80225 ~~. JI <br />Coal Mine Safety and Health '~~ <br />District 9 <br />~ ~? ~N. ^'7 iti-~i~~ ~~ <br />y JUL. ° .~. i?80 <br />Re: <br />Munger anyon Test Site No. 1 <br />I. D. No. U5-03119 <br />Roof Control Plans <br />Dear Mr. Walters: <br />The roof control plan for the McClave Canyon Test Site No. 1 (I.D. No. 05-03013) <br />• has been reviewed by MSHA and is approved for six months. However, if conditions <br />warrant, it may be changed at any time. <br />Since at the present time, no coal is being produced at the Munger Canyon Test <br />Site No. 1 (I.D. No. 05-03119) and several roof falls have occurred along with <br />additional support (posts) being installed in several areas, it will be <br />necessary to send a roof control specialist to determine the adequacy of the <br />plan. <br />Sincerely, <br />~~ <br />~ ~l?si~~~~s~ <br />John W. Barton <br />District Manager <br />\~. <br /> <br />