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<br />. ~ . ~ <br />liJ~;',' <br /> <br /> <br /> <br />Figure 6. Weather conditions in the vicinity of Nast Tunnel. Pre- <br />cipitation, most of which occurs as snowfall, may be as high as <br />30-40 inches per year. Climate is severe with possible frost year <br />round. The overhead electrical line is the contractor's temporary <br />powerline to be removed after construction. <br />