Alcan Aluminum Ltd. completed the previously proposed...

Alcan Aluminum Ltd. completed the previously proposed acquisition of most of the aluminum assets of Atlantic Richfield Co. . . . The government will revise upward its “flash” estimate of a 2.8% growth rate in the gross national product for the fourth quarter of 1984, predicted Richard Rahn, chief economist for the U.S. Chamber of Commerce . . . Banking sources said that Brazil’s foreign creditors have agreed to renegotiate an $8-billion emergency financial package assembled in 1983 . . . In talks held in Seoul last week, the United States and South Korea failed to agree on the duration of a pact curbing South Korean steel exports.