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Show . , j Knox Tractors Will Haul Ore From Big Cottonwood Mines After being subjected to the most strenuous and scrutinizing demonstrations and inspections, Knox tractors were proven beyond a possibility of a doubt to he the only satisfactory solutl on of the vexing problem of transportin g ore from the mines in Big Cottomvoo d to the smelters in the valley. fit '' . , ' 'TA'r! ' '"-l ' ? A "?A't'U'UV If iU' 4 I'tVji'MW p L' Fv'' W lU - lie ' L DD After demonstrations that left no room for doubt in the mind of anyone who witnessed thorn, the Utah-Idaho Motor company proved conclusively to 1 the officials of the Cardiff milieu, as woll a the company contracting to haul tlie ore from the mines to the smelters in the valley and coal and other supplies sup-plies back to the mines, that Knox tractors trac-tors would do the work in a manner that would forever settle the perplexing transportation problem for all concerned. con-cerned. Hundreds of teams were formerly employed em-ployed at a great expense to haul the ore from the mines down the canyon. Gasoline trucks were given a thorough trial and this method of transportation was proven unsatisfactory. Caterpillar tractors were used for weeks in a fran-ti fran-ti attempt to handle the tremendous nutnut of the Big Cottonwood mines r al) these methods of transportation, however, how-ever, were found to have their weak spots And the company had about despaired de-spaired of any satisfactory method short of building a railroad down the canyon. can-yon. The Utah-Idaho Motor conrpany, however, how-ever, held the solution of the problem, and, after eleven consecutive demonstrations, demonstra-tions, it was admitted by the officials of the mine, as well as the company that contracted to haul the ore, that, without a doubt, here was the quickest, the most reliable and the most economical method nf ore transportation so far attempted and that Knox tractors were the logical sort of equipment for transporting pra in the canyon. The demonstrations were in cliare of L. B. Stone and eleven trips were made from the ore bins of the Cardiff mines in Big Cottonwood canyon to the smeli tors in Salt Lake valley. Following ie a brief synopsis of results re-sults of these eleven demonstrations. The equipment consisted of one model 3t3 Knox tractor, with five-ton ore body, and two five-ton Troy trailers, equipped with regular steering apparatus, roller bearings and 36x7-inch rubber tires. On the down trips from the mine the trailers were practically always held back by the brakes on the tractor, this being a remarkable performance owing to the fact that in many places the grades are as steep as lb per cent. Traffic was never interfered with In, any manner, on acoount ef the fact that the Knox tractor could pass as easily a? the ordinary automobile. The traetoF was equipped with s'tee wheels fourteen inches wide, which were fitted with diagonal cleats. After the eleven trips up and down the canyon, no appreciable' wear was noticeable on the tires. Some of the demonstrations were, made during heavy rainstorms and no dif fi-eulty fi-eulty in negotiating the trip was en? countered at any time. The total tonnage of ore hauled during dur-ing these eleven demonstrations was 272,060 pounds and, although coal was not taken back on overy return trip, a total of 27, UNO pounds of coal was hauled, back, from the valley up.to the mines. The amount of coal hauled per trip ranged from 3600 to 41(00 pounds. An average gas consumption of twenty-one gallons per round trip was registered, regis-tered, and the round trip consumption of oil averaged two quarts. Twq trips were made every twenty-four twenty-four hours, the average time coining down being throe ami one-half hours ana returning four and one-half hours; which, with allowing one hour for loading and unloading, gave three hours for oiling, taking on gas and inspecting the machine. ma-chine. Ts'q repairs of any nature were necessary neces-sary during the eleven trips. Tho distance covered on each trip down included nine miles in the canyon proper and seven miles acrpss the valley, which included one very steep hill. Gne, qf the rqost remarkable features of the demonstration was the fact that at hq time during the demonstrations was it necessaFy to add water to the radiator on account of heating. The radiator ra-diator showed sigas of boiling at no stage of the demonstration. Considering that a rise of 3050 feet is negotiated in this trip of sixteen miles, seven of which are across the valley, val-ley, the fact that the radiator djd not overheat is even more remarkable. The difference in altitude seemed to . . . -. . i make ih difference whatever in the pow- i or of the Knox tractor engine. , When seen yesterday, Kzra Thompson, Thomp-son, president of the Cardiff Mining j company, said: '' It is true that af- j most every sort of transportation melh- ! od has been attempted to bring the! ore down from the C ardiff mines and : many companies have expressed the utmost ut-most faith in their particular method of handling the ore, but we have so : far seen nothing that will even ap- , proai.h the Knox tractor for efficiency, i safety, speed and economy. One of i the features that particularly impressed 1 me in the Knox tractor demonstration was the fact that the machine is absolutely ab-solutely under the control of the driver on. even tho steepest grades. T have seen the driver bring the Knox tractor, hauling eighteen tons of ore, to a complete com-plete stop within ten feet on the steep- 1 est grades in the canyon. This absolutely abso-lutely afsures the safety of pedestrians and other drivers on the Big Cotton- 1 wood road. "We believe the transportation problem has now been finally settled and that there will -be no more agitation agita-tion of the question.'' The company which has the contract for hauling ore from the Cardiff mines to the gme.lt era reports utmost satisfaction satis-faction with the performance of the Knox tractors. Their records siiow an average of twenty tons of ore per tractor each trip and the company states that the schedule of the trips does not vary se-en minutes. |