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• <br />H-G COAL COMPANY <br />HAY DEN GULCH MINE <br />VEGETATION REFERENCE AREAS STUDY <br />Prepared <br />By <br />• <br />MORRISON-KNUDSEN COMPANY, INC. <br />MINING GROUP <br />SPECIALTY MINING SERVICES <br />ENVIRONMENTAL SERVICES DEPARTMENT <br />November, 1980 <br /> <br />