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West Elk Cael Company, Inc. S <br />Post Jffice Box 591 <br />Somerset. Colorado 81434 " <br />. Telephone 303 929 5015 <br />February 15, 1983 <br />Mined Land Reclamation <br />423 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />Attn: Mr. James Pendleton <br />Dear Jim: <br />Re: Mt. Gunnison No. 1 Mine <br />Sandstone Extension Fractures <br />This let <br />relative <br />February <br />It is my <br />ing does <br />our mine <br />ter is to confirm the agreement reached <br />to the roof cracks during our meeting on <br />8, 1983. <br />understanding that we agree that the fractur- <br />not constitute a hazard for the stability of <br />workings. The unusual non-conformity between <br />• the surface joint patterns and those which are developed <br />in the vicinity of the sandstone channel tends to sup- <br />port the theory that the surface joint patterns are the <br />result of a separate geologic event from the cause of <br />the fractures associated with the sandstone channel. <br />This implies the fractures in and near the sandstone <br />probably formed before or after the surface joints. The <br />amount of observed extension and the intensity of iron <br />staining encountered in the sandstone rules out recent <br />formation. <br />i am presently drafting a letter which will be submitted <br />together with drafted copies of the maps presented on <br />February 8th. I will forward the complete packet at the <br />earliest mutual convenience. <br />Please call should you have any questions. <br />Sincerly, <br />John L. Ellenberger <br />Geologist <br />JLE/jm <br />• cc: P. G_.Beville/DAT-175D <br />J. F. Kohler/DAT-1950 <br />C. G. Hansen <br />C. W. Foster <br />>~c aaz <br />