ZAIRE AUTHORIZED TO BUY PL 480 RICE - USDA Zaire has been authorized to purchase about 30,000 tonnes of U.S. rice under an existing PL 480 agreement, the U.S. Agriculture Department said. It may buy the rice, valued at 5.5 mln dlrs, between March 31 and August 31, 1987, and ship it from U.S. ports by September 30, the department said. The purchase authorization covers the entire quantity of rice provided under the agreement.