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<br />I T!~ r :.: <br />~I <br /> <br />~l <br />I <br />L <br /> <br />I <br /> <br />I <br /> <br />I <br />, <br />j, <br />~ <br /> <br />, <br /> <br />r' <br /> <br />( <br /> <br />i <br />I . <br />I <br />I <br />, <br />I <br />I <br /> <br />, <br />I <br />I <br /> <br />I - <br />I r', <br />I <br />, <br /> <br />.l <br /> <br />,I <br /> <br />'.',:; l--: :.: t :'."'" <br /> <br />UNITED STATES DEPARTMENT OF THE INTERIOR <br /> <br />CECIL D. ANDRUS, Secretary <br /> <br />GEOLOGICAL SURVEY <br /> <br />H. William Menard, Director <br /> <br />for additional information ,"rite to: <br /> <br />District Chief <br />U.S. Geological Survey <br />Box 25046, Mail Stop 415 <br />Denver Federal Center <br />Lakewood, CO 80225 <br /> <br />I <br />__._______...-J <br />