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<br /> <br />\' <br />.) <br />I <br /> <br />l <br /> <br /> <br />" <br /> <br />~,. .. <br /> <br />PUMPING PLANTS <br /> <br />237 <br /> <br />140(, <br />Except for final clean-up, this plant and all other work under the <br />contract were completed in February 1938. <br />District forces began work at the Gene plant in October 1937 <br />with construction of a temporary machine shop near the pump <br />house and excavation for the transformer hoist foundations. In <br />December the placing of inlet elbows was begun, followed by as- <br />sembly of pumps in the pits, setting of inlet and discharge valves <br />and other mechanical and electrical equipment necessary in the <br />operation of pumps, motors, and valves, The erection of the mo- <br />tors on the motor floor with their connecting shafts to the pumps <br />was started in April, and at the end of June work was in progress <br />on the entire plant. <br />Iron Mountain <br />Excavation for the Iron Mountain pumping plant was started <br />in the pump house area February 14, 1936, using caterpillar trac- <br />tors and carryall scrapers, and was actively prosecuted on all fea- <br />tures until June 16th, when work was suspended for the summer <br />season. Concrete placing was started September 22nd in the pier <br />supports for the inlet manifold, the installing of which was com- <br />menced by Western Pipe and Steel Company, steel work subcon- <br />tractor, in October. Here as at Gene the inlet consists of a sphere <br />and three branches to supply the nine pumps. By November con- <br />crete work was under way on all features of the contract. <br />In February 1937 the pump house substructure was completed, <br />and erection of the steel frame of the superstructure began. This <br />was finished early in March, after which the steel subcontractor <br />proceeded with the construction of the delivery pipes, these being <br />completed and tested in June. All of the major contract features <br />were finished prior to July, but the contractor continued with clean- <br />up and removal of equipment until September 1, 1937, when the <br />contract was completed. <br />Preparatory to the installation of equipment, District forces in <br />May 1937 began moving in tools, materials, and construction <br />equipment from the force account work in the Coachella division <br />which at this time was nearing completion. In June, the contrac- <br />tor having finished the pump house interior, work was started on <br />the setting of the inlet elbow for the No.3 pump and the inlet tees <br />for pumps Nos. 1 and 2 and pouring concrete encasement about <br />them. In June, also, the first pump casing arrived and in July was <br />set in No.3 pit. From this time on installation of valves, pumps, <br />