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<br />C\1 <br />~ <br />to <br />-: <br /> <br />c <br /> <br />Sparling- Fowler- Murphy <br />Incorporated <br /> <br />Highway paving on lower portal <br />road to powerhouse, switchyard <br />roads, highway at Arizona abut- <br />ment and parking areas in dam <br />area. <br /> <br />A. A. Asphalt & Construction <br />Co. <br /> <br />Resurfacing streets in Boulder <br />City. <br /> <br />Lembke Construction Co. <br /> <br />Blacksmith shop and extensions <br />to the ramps at the downstream <br />ends of the powerhouse. <br /> <br />Work in progress at the close of the year being performed by <br />Government forces consisted principally of: <br /> <br />(a) Electrical rearrangements in the Boulder City substation <br />to increase the capacity to the Bureau of Mines; <br /> <br />(b) Construction of a sandblasting room at end of Arizona ramp <br />at the powerhouse; and <br /> <br />(c) Normal inspection and supervision of contractor's activities. <br /> <br />The principal construction work completed by Government forces <br />during the year was as follows: <br /> <br />(a) Penstock alarm system; safety bulkhead gates at down- <br />stream ends of powerhouse ramps; and bulkhead doors <br />in adits of penstock tunnels. This work was done to mini- <br />mize flood damage ill the event of penstock failure. <br /> <br />(b) A heating and air-conditioning system in Exhibit Building. <br /> <br />(c) Permanent lighting in two of the large penstock tunnels re- <br />placing the existing temporary circuits. <br /> <br />$tai#4. r4 <br />(JtIwJ. <br />e()It1.~ <br />Wodt ~ <br />q~ <br />~ <br /> <br />5 <br /> <br />i <br />~ I <br />