Books by Travis Hudson:
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Hudson, Travis, 1946-: Metal Mining and the Environment (Alexandria, VA: American Geological Institute, c1999), also by Frederick D. Fox and Geoffrey S. Plumlee (PDF at agiweb.org)
Additional books by Travis Hudson in the extended shelves:
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Hudson, Travis, 1946-: The United States Geological Survey in Alaska : accomplishments during 1979 (United States Dept. of the Interior, Geological Survey, 1981), also by Nairn R. D. Albert (page images at HathiTrust)
Find more by Travis Hudson at your library, or elsewhere.