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U.S. Department of Labor Mine Safety and Health Administration <br /> P.O.Box 25367 <br /> Denver,Colorado 80225-0367 <br /> West Region °STD F <br /> 11/8/2020 Lakewood District <br /> Michael W. Morriss <br /> President& General Manager <br /> Trapper Mining Inc. <br /> P. O. Box 187 <br /> Craig, Colorado 81626 <br /> RE: Trapper Mine <br /> Mine ID No. 05-02838 <br /> Coyote Impoundment <br /> ID No. 1211-CO-09-02838-01 <br /> Impoundment Construction Plan: <br /> Modification of Spillway <br /> Dear Mr. Morriss: <br /> The plan modification, dated September 2, 2020, for the referenced impoundment, has <br /> been reviewed by MSHA personnel and is approved in accordance with 30 CFR § <br /> 77.216-2(b). <br /> The plan modification consists of cover letter, a USGS location map, a JMattern Mining <br /> report, a Geotechnical evaluation report by Agapito, and a map of the principal <br /> spillway. This modification will be incorporated into the current plan originally <br /> approved on September 7, 1977. <br /> The following modification will be made: <br /> 1. Requests raising of the Coyote principal spillway from an elevation of 6311, or <br /> a little less than six (6) feet. <br /> If you have any questions regarding this approval, please contact John Lewis at <br /> 303-231-5558 or this office at 303-231-5458. <br /> Sincerely, <br /> �Digitally signed by <br /> rd /j <br /> MATTHEW <br /> LEMONS <br /> Matthew L. Lemons <br /> District Manager <br /> cc: Stephen Hinkemeyer <br />