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U.S. DEPARTMENT OF LABOR <br />A11NE SAFETY A,\'D HEAi.TH ADblINiSTRATION <br />. Mailing Address: Street Address: <br />P.O. Box 25367, DFC 730 Simms <br />Denver, Colorado 80225 Lakewood, Colorado <br />Coal Mine Safety and Health <br />District 9 <br />November 16, 1979 <br />Paul J. Osborne <br />Mine Foreman <br />Black Hawk Coal Company <br />P.O. Box 1555 <br />Grand Junction, Colorado 81501 <br />,MEVT OF <br />(, ~, <br />y~4 tt 7' ~ 9 <br />7' A <br />_~. < <br />?. a_.~ <br />:~ <br />.rTrrE: of r <br />Re: Munger Canyon Test Site #1 <br />I.D. No. 05-03119 <br />Roof Control Plan <br />Dear Mr. Osborne: <br />The roof control plan, submitted September 21, 1979, for the <br />subject mine, has been reviewed and approved. This plan super- <br />sedes all previously approved plans. If conditions warrant, <br />• the plan may be changed at any time. <br />Sincerely yours, <br />i <br />=~--- <br />John W. Barton <br />District Manager <br />Enclosure <br />• <br />