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Show NEW TUNNEL PROGRESSING Construction crews have completed com-pleted drilling 2,790 feet of Kennecott Ken-necott Copper's new 3 Ms mile ore haulage tunnel, probably the longest single line mine tunnel in the nation. The 18,000 foot underground tunnel is being built under contract con-tract with Utah Construction Co. The $12 million project was started last November and is expected ex-pected to be completed by 1960. Crews are now pushing forward on an average of 28 feet per day. The tunnel will connect the bottom of the open-pit copper mine with the Copperton assembly assem-bly yards at the mouth of Bingham Bing-ham Canyon. W. J. Pollin, district manager, Utah Construction Co., pointed out that at points the concrete lined tunnel will be 1,800 feet below the top "lip" of the huge copper mine. When completed, the tunnel will be 18 feet wide and 22 feet high. It will accommodate a single standard gauge railroad track. Some 1,970 feet have been finished finish-ed off and concrete lined, Mr. Pollin said. Centralized traffic control will be necessary to coordinate movement move-ment of ore and waste cars in and out of the tunnel from the bottom of the pit. The mine is served by two ether tunnels, progressively being be-ing shortened as the pit expands. They are the 6,040-foot level tunnel, tun-nel, finished in 1945, and the 5,840-foot level tunnel finished in 1953. O |