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<br /> <br />'''>5''1 <br />fHL;", .. .. <br /> <br />UNITED STATES DEPARTMENT OF THE INTERIOR <br /> <br />CECIL D. ANDRUS, Secretary <br /> <br />GEOLOGICAL SURVEY <br /> <br />W. A. Radlinski, Acting Director <br /> <br />For additional information write to: <br /> <br />District Chief <br />U.S. Geological Survey <br />Box 25046, Mail Stop 415 <br />Denver Federal Center <br />Denver, Colorado 80225 <br />