. Pacific Gas and Electric magazine. Pacific Service Magazine i^^Sij The second consideration is a suitable lo-cation of the penstock or pressure pipe, whichdelivers the water from the forebay to thepower house. The length of the pipe mustbe as short as possible and yet give the great-est obtainable vertical Crusher and mixing plant at power house site the Bear River, about twelve miles above thepoint where that stream is crossed by the Nev-ada County Narrow Gauge Railroad. It isjust above the confluence of a small tributarycreek with the river. This, however, pro-vided but a very small
. Pacific Gas and Electric magazine. Pacific Service Magazine i^^Sij The second consideration is a suitable lo-cation of the penstock or pressure pipe, whichdelivers the water from the forebay to thepower house. The length of the pipe mustbe as short as possible and yet give the great-est obtainable vertical Crusher and mixing plant at power house site the Bear River, about twelve miles above thepoint where that stream is crossed by the Nev-ada County Narrow Gauge Railroad. It isjust above the confluence of a small tributarycreek with the river. This, however, pro-vided but a very small portion of the flatnecessary for the foundations. The factor of keeping the necessary ex-cavation quantities as low as possible wasthe most troublesome, as the sides of the can-yon of the Bear River are very steep, due tothe fact that it is a typical Sierra stream, hav-ing a steep gradient and in high water seasona very turbulent flow. The general character of the bed rock, inthe immediate vicinity of the power house, iswhat is commonly called serpentine. Thisis a substance composed mainly of silica, mag-nesia and a little protoxyd of iron. It is greenin color. When it is cut away and left stand-ing at a steep slope, it flakes off in largemasses. Th2 surfaces of these have a highnatural polish. Serpentine
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Keywords: ., bookauthorpacificgasandelectric, bookcentury1900, bookdecade1900
