OCR

Ore Receiving and Crushing Plant - Receiving bins of 10, 000 tons capacity, two 7 foot standard Symons primary crushers, four 7 foot shorthead Symons secondary crushers, conveyors, transfer house, crusher building, one receiving building, electrical and utilities. This facility has a capacity of 2,000 tons per hour. Concentrator - A complete reduction mill of approximately 180,000 square feet in area requiring approximately 18, 000 cubic yards of concrete and 5,000 tons of structural steel for concentrating 30,000 tons of ore per day. Major process equipment included eight 10 foot diameter by 13 foot rod mills, sixteen 10 foot diameter by 10 foot ball mills, sixteen 16 foot by 36 foot primary classifiers, 480 rougher flotation cells, four 8 foot diameter by 12 foot regrind mills, 20 hydraulic (Dorrclone) secondary classifiers, 112 primary cleaners, 32 final cleaners and auxiliary equipment including pumps, blowers, electrical equipment and utilities. Concentrate Handling and Dewatering - Two steel concentrate thickeners 100 feet in diameter, three 6 foot diameter by 8 foot filters, blowers, dryers, conveyors and necessary auxiliary equipment to handle 750 to 800 tons of copper concentrates per day. Tailings Disposal - Three 325 foot diamter thickeners, tailings ponds, pumps, pipe lines and other equipment to return water to the mill circuit. Smelter - A complete smelter of approximately 120,000 square feet in area for treating 750 to 800 tons of copper concentrates per day. The principal process items were a 110 foot by 39 foot side feed, gas fired preheated air reverberatory furnace, three 13 foot diameter by 30 foot Pierce-Smith converters and one 13 foot diamter by 30 foot holding furnace. Copper anodes would be cast on a 34 foot diameter, 22 mold casting wheel. Two each approximately 100, 000 pounds evaporation per hour waste heat boilers would supply steam for operating an electric generator in the Power Plant. These boilers were fired from the waste heat of the uptake from the reverberatory furnace. Gases were collected and conveyed by balloon flues through an electro static (Cottrell) precipitator to a 500 foot high by 20 foot top diameter stack.