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<br /> <br />--... <br /> <br />~ <br /> <br />. <br /> <br />. <br /> <br />this work. A test embankment section was constructed on the south shore <br /> <br />of the reservoir about two-thirds of a mile upstream from the dam. <br />Because of the increasing cost of rock riprap ordinarily used in upstream <br />embankment protection, Bureau engineers l.ad been experimenting for over <br />twe years with a number of substitutes for rock. The results of this <br />research indicated that the two most promising materials were $tandard <br />(compacted) soil-ceJrent and hot-miJC asphal tic-concrete. These materials <br />were used in the test section at Bonny Dam. The purpose of the experi- <br />ment was two-fold: First, to afford an opportunity for engineers to <br />study the effects of freezing and thawing, wind and wave action, reservoir <br />drawdown, and other severe conditions to which slope protection is sub- <br />jected and, second, to afford contractors and machinery manufacturers an <br />opportunity to develop new niachinery and to test standard machinery and <br />methods of placing the protective materials. It is too early at this <br />date to determine the success of the test section; it will take years of <br />exposure to freezing and thawing, wind and wave action, and other adverse <br />conditions before that can be determined. <br />Design and construction of Bonny Dam was under the direction of L. N. <br />McClellan, Chief Engineer of the Bureau of Reclamation, Denver, Colorado. <br />Avery A. Batson, Denver, Colorado, is Regional Director of Region 7 of the <br />Bureau of Reclamation and H. E. Robinson, Indianola, Nebraska, is District <br />Manager of the Kansas, River District in which the project is located. <br />Wayne S. Byrne was Construction Engineer until July 1949 and C. L. Mltch <br />was Construction Engineer from that date until its cc:mpletion. <br /> <br />Z6tZ. <br /> <br />--0- <br />