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<br /> <br />' INTRODUCTION <br />' This report presents the resul#s of a geotechnical investigati~m <br />conducted at the site of the existing +f3 tailings pond for the Standard <br />~ Metals Corporation Silverton Mill, Silverton, Colorado. The primar~~ purpose <br />' of this investigation and analysis was to determine the stability oi' the <br />existing tailings embankment, to make recommendations for adding additional <br />height to the embankment, and to recommend any corrective action which <br />needs to be taken for stability of the existing embankment. <br />' Factual data gathered during the field and laboratory work is summarized <br />' in Figures 1 through 14, and Tables 1 and 2. The results, conclusions <br />and recommendations discussed below, are based on the data gathered during <br />the field and laboratory work, analytical analysis of the existing conditions, <br />and our experience with similar soil conditions. <br />FIELD PROGRAM <br />' Eleven test holes were drilled by F. M. Fox and Associates, Inc.. <br />' on 'March 31 through April 4 of 1976. Refer to the Figure 1 for the Test <br />~ Hole Locations. The holes were drilled utilizing either a four inch diameter <br />continuous flight power auger or an eight inch diameter hollow stem continuous <br />flight power auger. The materials encountered in the test holes were logged <br />' by an engineer of this office on the site during the drilling operations. <br />' The various soil strata encountered during the drilling is shown on the <br />Logs of Test Holes, Figure 2. The soils were sampled utilizing a California <br />' Sampler from which standard penetrations as well as samples for laboratory <br />analysis were obtained. In addition, thin wall Shelby Tube samples were <br />1 extracted for laboratory testing. <br />t <br />-1- <br />