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~,! I '. Eagle Mountain Much of the construction at Eagle Mountain was subcontracted, including excavation, aggregate production, plate steel pipe, struc- tural and reinforcement steel, roofing, and painting. The contrac- tor placed all concrete and backfill and performed such other work as could not readily be subcontracted. On April 8, 1936 the contractor started the erection of a camp to house his employees, a short distance south of the plant and west of the District road into Division 3 camp, On April 20th stripping of the reservoir area was begun and on May 2nd drilling was started, preparatory to excavation in the inlet channels and pump house foundation. In July excavation was extended to the surge chamber and gate house site at the top of the lift, to the de- livery pipe slopes, and to the sand trap. By October trimming to final grade of the pump house foundation rock was under way on the west side, but under the control house and a portion of the main plant the material was so broken that deep excavation was required, it being found necessaq at one point to carry the excavation to a depth of 40 feet below the original grade. A good bedrock base was finally secured and the first concrete was placed in the pump house foundation walls and slabs early in January 1937. In the meantime rough excavation for the sand trap was com- pleted and concrete placing had been started for the surge cham- ber and gate house. In March the subcontractor set the first sec- tions of the intake manifold and the installation was completed and tested in May. Concrete work in the various structures was continuous through the summer months, that in the sand trap being finished June 24th, and the pump house up to the motor floor in August. With the pump house up to this level it was possible for the subcontractor, Consolidated Steel Corporation, Ltd., to be- gin erection of the structural steel frame and crane, and this work was completed in October 1937. Concreting of the superstructure followed to completion in .J an- uary 1938, concrete in the switch house and water tanks being fully placed shortly after. The subcontractor on the delivery pipes, Western Pipe and Steel Company, set up rigging and began con- struction of the pipes in December 1937, finishing the job ready for test two months later. In March 1938 the rolling of the oil- mix reservoir lining was completed; backfill around buildings and in the yard was brought up to grade; and general cleanup was in " .of (- 0 J..'ivu PUMPING PLANTS ;. 2.39 ~ I