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<br /> III III'lllllllll'll <br />sss <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Depanmem of Naluml Resources <br />1113 Sherman SL, Room 215 r <br /> <br />Denver, Colorado 80203 ~ <br />~~ <br /> <br />Phone (3031 866 3567 I <br />FA%: (303) 832-8106 <br /> DEPARTMEI~IT OF <br /> NATURAL <br /> RESOURCES <br />Date: June 21, 1996 Roy Romer <br /> Governor <br />To: Mike Boulay~j~ lames 5. Lochhead <br />E <br />m <br />D <br />a <br />~ <br />~ ue <br />or <br />nec <br />rve <br />C <br />~ ALChaeIB Long <br />// <br />From: David Berry Division Director <br />/ <br />>/+ <br />Re: Reporting Requirement - Subsidence Data - Mautz Cabin Survey <br />Mountain Coal Company is required to monitor/survey the Mautz cabin as described on old <br />page 2.05-153 (Technical Revision No. 74), page revision dated December 1994. The requirement <br />is as follows: <br />"The building and site were measured, surveyed and photographed in early <br />November 1994, prior to possible subsidence impacts. Subsequent surveys and <br />photographic records were begun in early December 1994, and were continued <br />approximately weekly until January 1995, then bi-monthly through March 1995, <br />when mining of the panel will be complete. Regular monitoring (weekly, then bi- <br />monthly, as above) will again be conducted when the 6NW longwall panel is <br />mined past this area." <br />You should check the most current page to ensure that this requirement has not changed. <br />We may want to clarify that monitoring should continue until subsidence is complete, not just until <br />mining has passed the cabin area. <br />Also, the Mountain Coal Company letter of December 14, 1994 (TR-74 file), last paragraph, <br />states: "Subsidence monitoring and survey results, including the impacts, if any, to the building <br />will be presented in MCC's annual subsidence report." It appears that MCC should be reminded <br />of this commitment. <br />You should make general mention of the commitment in your letter. I will also send a specific <br />letter to MCC requesting a detailed report which includes all survey information, damage <br />descriptions, mining sequence information, and a summary regarding the mining and possible <br />impacts to the Mautz cabin. <br />DAB/bjw <br />1anv\007.DAB <br />