Arizona republican., 1905-04-27

ferred to will be employed. These pipes will be in the shape of an invert- cd siphon so the canal will really go under the two streams These pipes will be required to withstand a pres sure of sevent. feet of water and will be the largest pipes of the sort in the world. built to withstand so great a pressure, so far as the reclamation en- gineers are informed. And these pipes will be without joints being a contin- uous construction. Rather. there will be two of them and together they will carry the entire volume of water in the canal. Each pipe will have a struc- ture of steel. around which will be plac- ed the cement which will form the pipe proper, the steel being merely to re- inforce it. These pipes will be con- tinuous and made in place. That is the machinery whatever it is like will slip along creating a finished pipe as fl proceeds, all in one piece just as a wire could be drawn out to an inter minable length at the wire works, if desirable. though by a. different pro- cess of course. While the power canal Is only a single feature of the big stor- age enterprise. with it's miles of tun- nels, all cemented. its other miles of excavation, its inverted siphons and various other structures. it is alone an enterprise of great magnitude and of more than passing interest to any thoughtful person.
 Another announcement made by MT. Hill yesterday was that the high line terminal of the Roosevelt road was fin- ished last Monday and the stage pass ed over it on Monday night. MT. Whit ney's force has all been removed ex-
 
 surfacing. This is the final construc- tion that completes the road into Roosevelt going over the hills that form the south end of the dam site. in stead of passing up the river channel, over, or through the dam site, and which former arrangement interfered with traffic every time there was high water in the river. The river by the way is behaving itself just now, the flow yesterday being only 5000 second feet.
 Asked about the sluicing tunnel and the shafts in which the gates are to be placed, MT. Hill said the tunnel is now filled entirely full of sand and it is banked uo above the tunnel entrance above the dam site. But that is no cause for worry. When they need the tunnel it will be easy enough to flush the sand out of it. The shafts for the accommodation of the gates were dug as far as practicable by the upraise method before the tunnel was filled with sand and the men are now work ing from the top downward to meet the upraises. They have about forty feet further to go.
 On the opposite or south wall of the canyon about 5000 yards of rock were removed to form the shelf in the rock, on which is to be constructed the tenn porary power plant. This rock was dumped in the river bed and nearly all of it was washed away in the late floods. the only real good turn the river has done for the engineers so far.
 In connection with this site for the power plant there is another little en- terDrise being prosecuted that would be something of an undertaking for a pri- Vate citizen of moderate means That is the excavation of what the engineers | term the "penstock" but most likely the | average man would call it a mill race. | But whatever its name the construction l is to be an incline shaft, or when in use | later a tunnel, and it is the actual | of the power canal. The | canal as a canal, will end on the brow of the mountain above the dam site,