| OCR Text |
Show exception, workers require a period of altitude adjustment, varying with the individual from several days up to 2 and 3 weeks, with occasional rest periods at normal elevations. Through experiment, Lock Joint-American arrived at a work schedule which allowed their expatriate employees a rest period of U or 5 consecutive days per month away from the project. Ilo-Smelter Area Principal features of construction in this area included: Ilo Well Conduit - Cast Iron, Ilo to Smelter, 15 Kms. Water Treatment Plant Camp and Smelter Storage Facilities Water supply for the Ilo-Smelter area was obtained by drilling a 24" diameter well 110' to bedrock in the Ilo river flood valley approximately 2 miles inland from the ocean. Drilling began August 17, 1957. The well was completed in February and under test produced in excess of 1,000 GPM. The permanent 125 HP submersible pump rated at 580 GPM operating against a 630' total head differential was installed in May 1953 and placed in operation under temporary power in July 1958. The 1,160 L.F. of 12" steel pipe up the 37 slope of the river canyon wall to the water treatment plant site was installed by Utah-Emkay during April and May 1958. Under supplement No. 2 to their excavation subcontract, dated March 17, 1958, Kruger S.A. and associates installed the 48,000 B.F. of 6", 8", and 10" cement mortar-lined, east iron mechanical joint water supply pipeline connecting the treatment plant with the Smelter Camp and the Smelter-Power Plant areas. Benching began in April 1958. All pipe trench was excavated by hand, and the full 15 kms. was laid, tested, and backfilled by September 1, 1958. The water treatment plant consists of a 63,500 gallon storage tank, |
