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Show Tunneling Under Utah's Mountains For Ore umih ."' jr ry wiiy-v". mvrtX TT"TL : l . . - S: I :- V , - . ; i ; YiT l-rv !'v? k ,n MM Emphatic testimony that Utah's mining industry faces the future with the problem of deep expensive development can be had from the experiences of the National Tunnel & Mines company, which is now entering a period o large scale production at its properties in the Bingham district. After nearly tour years of development de-velopment and the expenditure of nearly $1,500,000 the mine is just now beginning to yield ores from great depth. Years ago the upper levels of the National Tunnel, which is a consolidation of Utah Apex and Utah Delaware properties, prop-erties, was virtually worked out. Large deposits of low grade ore, however, were known to exist below the water level at about 1500 feet down to the 3100 foot level. Thfi pTcnensft of hoisting the ore distance of 4 miles to the National Na-tional Tunnel property. The tunnel tun-nel encountered the Utah Apex shaft at a depth of 2500 feet, thereby there-by draining a large area of the mine and eliminating much of the hoisting expense. Such mining and prospecting Is a far-cry from the early days of western mining when many deposits de-posits of valuable ore were found at or near the grass-roots. Thus the future of Utah's mining industry seems to lie in deeper and more exhaustive development of Utah's mining districts. During the past SO years Utah's principal mining districts of Bingham, Park City, Tintic, Alta and Beaver county, have yielded in the neighborhood of two billion dollars dol-lars worth of ore. Their lives have been much longer than the ordinary mining districts and needless to say most of the easily obtainable ores have been mined. The future of Utah's mining should be jealously guarded and encouraged as the problems are mounting with he extraction of each pound of ore. and waste to the surface together with the cost of pumping the water, wa-ter, made mining of the ore prohibitive. pro-hibitive. In order to solve this problem the company drove a huge drainage drain-age and transportation tunnel from Tooele on the west of Bingham, a |
