CROWN RESOURCES <CRRS> PLANS ENERGY UNIT SALE Crown Resources Corp said it plans to sell its Oklahoma-based oil and gas unit as part of its strategy to focus on developing precious metals properties. The company said it bought the Wyona Water Flood Oil and Gas unit in 1984 for 650,000 dlrs. Crown said the Wyona field is fully developed with 28 producing wells. Current oil production is 80 barrels a day, it said, adding that no gas was produced for sale in 1986.