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Sep -06 -00 09:O1A Sunnyside Gold Corp. <br />Mr. Wally Erickson, Reclamation Specialist <br />Division of Minerals and Geology <br />Department of Natural Resources <br />701 Canino del Rio, Room 125 <br />Durango, CO 81301 <br />RE: File No. M -77 -378, San Juan County <br />Adequacy Issues for TR -22 <br />Dear Mr. Erickson: <br />A 11 <br />970 387 5310 <br />SttNNyy3:a2 COLD CORPORATION DM Durango Field O#. <br />AN ECHO BAY COMPANY son of Miner & Geology <br />P.O. Box 177 • Silverton, CO 81433 <br />Phone (970) 387 -5533 • Fax (970) 387 -5310 <br />September 5, 2000 <br />To address the issues specified in your adequacy Ietter for TR -22 dated September 1, <br />2000, Sunnyside Gold Corporation (SGC) submits the following. <br />1. Specify the type of concrete mix to be utilized in the near surface <br />bulkhead. <br />SGC plans to use the mix that was used in the American Tunnel bulkhead. While <br />this mix will most likely provide strengths in excess of the 3000 psi required, the <br />mix design is proven and it is planned to use the same batch plant that provided <br />the concrete for the American Tunnel bulkhead. <br />Concrete Mix: # /cu.yd. <br />Portland Type V 720 <br />Coarse Aggregate 1673 <br />Fine Aggregate 1004 <br />Fly Ash, Class F 115 <br />Water 324 <br />Delay Set (4 -6 hours) <br />P.02 <br />Received <br />SE P 0 6 2000 <br />