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.. ~ , ' ,: ; 1 ~,! , I, I , I. III ~ \ r I " L 1 . , ~ ), ~ \ 'i -1 "'-' - ...V TRANSMISSION LINES ~Sl I ~t.. and power units. An ample supply of spare tower steel is storetl here, together with other necessary materials and tools. The entire camp is enclosed by a woven wire fence with an interior fence en- closing the switch yard area. The initial switching equipment consists of one disconnect switch on the Gene branch and one on the Hayfield. The yard is de- signed for later installation of a second transmission line, addi- tional disconnect switches, and oil circuit breakers. .4dditional1'oad work Following the construction of the 230-kv line north of Iron Mountain a start was made from that point in February 1937 on the repair and drainage of such portions of the contractor's road as were usable and on construction of a road through the previ- ously omitted sections. This work, when completed in August 1937, provided a continuous patrol road from Boulder to Iron Moun- tain. Since that time the reconstruction of the contractor's road from Iron Mountain to Hayfield has been nearly completed, so that there is now a total of 250 miles of natural surface dirt roads along the transmission lines, continuous throughout except for a detour around the south end of the Coxcomb Mountains, the west slopes of which are too precipitous to justify the expenditures necessary to close this gap. Constru.ction costs The total cost to June 30, 1938 of the permanent transmission line and facilities is given herewith: Sllr..e~:;; .....m...num .._........mmu.. HOllJS anJ wlller ~upply 2:3l).h Jioes W-k\' line Camino switehill~ ,.;lalion . Stores $ 55,580,56 ]67,396,13 1,907,622.05 38,354,28 89,392,76 64,056,63 Tutill. $2,322,402.4 I TELEPHONE LINE While transmission line surveys were in progress in 1934 the telephone line to connect Boulder dam and the Camino switching station to the existing District system along the aqueduct, de- scribed in Chapter 7, was also located and tied in to U, S. Land Office corners. This necessary addition to the system consisted of 7.8 miles of tap lines connected to trunk lines at Hayfield and Iron .