Show TUNNEL i IS READY ON TIME I C C. P. P Completes Longest Mountain Bore in Western West- West WestI I em ern em Hemisphere J j I I. I T 21 e t t N 5 w Sissies SEATTLE Wash Dec Dee Under Under giant Mount MacDonald in the Sel- Sel kinks of British Columbia Columbia- the Canadian Canadian Canadian Cana Cana- dian Pacific railway has Just completed the double track mountain tunnel tun tun- Un Unas as nel In the Ye Western t rn hemisphere The eastern portal I Is situated almost t immediately under the titus town of ot Hermit Three and one halt years yeara were allotted to completed the work ork would mould l h ho p o made the date of or oft completion December 31 1916 1016 but the t i I method of or construction pursued by the engineers has reduced this time so that I the tunnel was wu opened practically three weeks skis before that date I This method consisted of driving a Q small working or pioneer tunnel through which was wu carried all th the working air all water and ventilating pipes as well as the material from the headings In the main tunnel tunDe-I. This pioneer bore Wa was a a. small preliminary pre pre- shaft seven feet feeL by eight which paralleled parallel the th course of th the naIn tunnel at t a distance of about fifty feet Crosscuts were made from the small bore to the line of the main I tunnel about bout eve every 1500 1600 feet Drifts DrUta In each cro crosscut acut were driven en in both directions In addition addiSon the main tunnel work werk was advanced from each ech portal The Initial heading was made as u an n eight by eleven center heading and the en enlargement enlargement enlargement en- en operations followed clo closely el The advance ance headings met on December December December Decem Decem- ber 19 19 1915 and the enlargement by bythe bythe bythe the steam shovel shove had hac advanced ad on that date three miles leaving two miles mUes to complete This work was carried on at the rate of oC a quarter mile mUe per month The pioneer tunnel will serve as a ft ventilating shaft for the tho main tunnel The tunnel with a bearing under Mount MacDonald was waa constructed on ona ona ona a tangent throughout Us its entire length of ot five miles The maximum depin o US rock above it Is feet For about 1100 feet at each end the tunnel l WM was constructed through clay and boulders tho ho rest of the tile passage being through solid rock mica schist and quartzite Tho The tunnel Is twenty-nine twenty feet wide and twenty-four twenty feet teet high One of the difficult engineering feats carried out In connection with the tunnel tunnel tun tun- nd nel undertaking was the diversion of ot the course of ot the river To accomplish this a a. deep trench nearly a amile aralle mile ralle long was waa dug dUIt on the left heft side ol ot the tIle approaches This acts acta as S a continuation continuation con con- of ot the original channel of ot tho the river and diverts the stream past the cutting to a point where an arched culvert turns the water under the tho tracks again into the old creek bed on tho the right side of the tho railroad The tunnel reduces the elevation of ot the track through Rogers pass pus by 66 feet teet and cuts out curvature to th the amount of ot seven complete circles The Th highest point reached by the tunnel Is feet teet above sea se level and t feet t from the extreme height of ot the peak Th force of ot men employed by tho the contractors 1200 and two care car for tor them model villages have hav been established on oil both sides of the moun moun- tain f The tunnel Is s named Connaught after the late general governor general of ot LaO Can ad ada It cost coet |