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Golder Associates Inc, <br /> 200 Union Boulevard.Suite 500 swi'volGolde <br /> Lakewood.CO USA 80228 . <br /> Telephone(303)980-0540 <br /> Fox(303)985-2080 <br /> January 9, 1996 Our Ref: 943-2847.001 <br /> Cripple Creek & Victor Gold Mining Company <br /> 2755 State Highway 67 <br /> Victor, CO 80860 <br /> Attention: Mr. Ron Roberts <br /> RE: INTERFACE SHEAR STRENGTH TEST RESULTS FOR PHASE II CRESSON <br /> PROJECT <br /> Dear Ron: <br /> Golder Associates Inc. (Golder) has evaluated the interface shear strength for the liner <br /> configurations proposed for the 1996 Phase II construction activities. Golder would like to <br /> take this opportunity to present the test results from the interface! shear strength testing <br /> program to the Cripple Creek & Victor Gold Mining Company (CC&V). <br /> Material Gradations <br /> Golder has performed interface shear strength on a variety of configurations. Tests were <br /> performed using site specific material where possible, and included the materials meeting <br /> the following gradations: <br /> 1. Drain Cover Fill <br /> U. S. Standard Percent Passing <br /> Sieve Size by Day Weight <br /> 1-1/2 inch 100 <br /> 3/4 inch 70 - 100 <br /> 3/8 inch 40 - 70 <br /> No. 4 5 - 50 <br /> No. 40 0 - 20 <br /> No. 200 0 - 8 <br />