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American Tunnel I , :head Construction Pa( 4 July 12, 1995 <br /> must elapse before grouting can commence and the valving and <br /> pressure gage assembled to the end of the 1-inch pressure sensing <br /> and sampling water pipe. Structurally, the valve can be closed <br /> anytime after the grouting is complete. <br /> Congratulations on another very difficult job well done. <br /> Sunnyside Gold Inc. took extra care to see that the bulkhead was <br /> properly constructed. In fact, the American Tunnel Bulkhead met or <br /> exceeded all the design specifications. My thanks to everyone <br /> involved. <br /> Sincerely', <br /> John F. Abel, Jr. <br /> Colorado P.E. 5642 <br />