Show the foot tunnel through zion canyon walls the job of driving the foot tunnel through the solid sandstone walls of zion canyon on the zion mt carmel highway is now well over half done and at the present rate of progress there is every indication that work on the first section will he be completed by september 2 the final limit of the contract it was announced by E T park superintendent today to date the nevada contracting company has driven a total of 2350 feet of the main bore and in addition have 1650 feet of pilot bore cleared out ahead of the crew working the enlarged tunnel besides driving this much tunnel the company has opened five of the six observation galleries and put in feet of lining in sections which appeared to be dan dangerous er taking all of these facts into consideration and also the amount of work accomplished in constructing the approach highway up the mountain side to the tunnel entrance the U S bureau of public roads estimated that at the end of june 71 per cent of the work vork had bad been lone done in 73 per cent of the working time since that date progress has been steady and the job is now practically on schedule during the month of june the contractor drove a total of 1135 feet of the full sized tunnel or an average of 37 feet per day this is believed to be a record for this type of construction work on the pilot bore goes forward at the average rate of 19 feet per lay day practically all of the heavy con rt truc ruction tion work on the roadway outside the tunnel has been completed no definite date has been given yet for lettina the contract for building the second section of four miles but there will vill ba no delay in starting this section after the pre present reent job is com |