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7.0 REFERENCES <br />• The following references are identified by author and date in parentheses in the <br />text of this report. <br />Amuedo and Ivey, Inc., 1992, Engineering geologic ground stability investigations, 005 <br />Gulch and vicinity, Seneca II-W mine azea, Routt County, Colorado: prepared for <br />Peabody Coal Company, Western Division, Flagstaff, Arizona, Mazch 6, 1992. Map scale <br />1:4800. <br />1994, Engineering geologic mapping, Yoast mine and vicinity, <br />Routt County, Colorado: prepared for Peabody Western Coal Company, Flagstaff, <br />Arizona, August 22, 1994. Map scale 1:4800. <br />Seneca Coal Company, 1995, Site specific geology, Exhibit 6-1. Seneca Coal Company <br />Flagstaff, Arizona, 03/02/95. Map scale 1:24,000 <br />Seneca Coal Company/Montgomery Watson Mining Group, 1999, Haulroad B Extension <br />instability investigation, Yoast mine, Routt County, Colorado: Hayden, <br />Colorado/Steamboat Springs, Colorado. <br />Tweto, Ogden (compiler), 1976, Geologic map of the Craig 1 degree X 2 degree <br />quadrangle, northwestern Colorado: U. S. Geol. Survey Misc. Investigations Map I-972. <br />• Map scale 1:250,000. <br />r1 <br />LJ <br />11 <br />