Design, Construction and Initial Operation of the Tailings System at Brenda Mines Ltd

The copper-molybdenum property of Brenda Mines Limited is located in the Okanagan district of British Columbia, approximately 25 miles west of Kelowna. The Okanagan Valley is a resort and fruit-growing area, and therefore pollution control measures are more stringent than in some remote areas. The Brenda plant began production in April 1970 and is operated at a rate of 24,000 tons per day. The plant site is located at an elevation of 4,800 feet, which is approximately 3,600 feet above the level of Okanagan Lake. The site is in the Okanagan drainage basin. The major consideration in the design of the system was the prohibition of any downstream discharge. It was therefore necessary to redaim as much water as possible and to minimize the addition of fresh water to the system. The maintenance of a water balance is of critical importance. This paper will outline the major design criteria for the systems and the site investigations which were carried out. The design and construction of the facilities will be described and current operating experience will be outlined.
Keywords: Construction, Dams, Design, molybdenum, Okanagan Lake, Peachland Lake, tailings, The Lower Main Dam, Operation, Storage, Systems, tailings, Water, Waters
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