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<br />~ <br />,., <br /> <br />Earth ~ Rockfill Dams <br /> <br />UPPER URAD DAM <br /> <br /> <br />BINGHAM CREEK DAM <br /> <br /> <br />EMPIRE, COLORADO <br /> <br />The Denver-based firm, in JOint ven- <br />ture with W. W. Wheeler and Associ- <br />ates, Denver, was retained by <br />American Metal Climax, Inc., to de- <br />sign and observe construction of the <br />400,000 cubic yard Upper Urad dam <br />and spillway. Special design problems <br />were caused by the dam location, high <br />in Colorado's mountains, major snow- <br />slides into the reservoir and a deep <br />glacial till formation. <br /> <br />COPPERTON, UTAH <br /> <br />Design of this dam and appurtenant <br />facilities was by a joint venture with <br />Ketchum, Konkel, Ryan and Fleming, <br />also of Denver. The problem of reser- <br />voir-bottom seepage was solved by <br />major reservoir blanketing. Client for <br />the project was Kennecott Copper <br />corporation. I nvestigations had d is- <br />closed a pervious deep overburden in <br />the foundation and abutments. The- <br />spillway was placed over the embank- <br />ment, rather than over an abutment as <br />is normal to avoid inferior foundation - <br />conditions on the abutments. <br />