P287 287 YLE TEKSTJ-TV 15.05. 1544:11    Niws in English Friday   News in brief At least 18 people died and 65 weri injured when a furniturd factory collapsed in central Mixico. Rjd Cross rescue workers were continuing theiz effotts to find thosj believed still buried in the rubble of the building which collapsed yesterday. $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ Thj United States today conducted a powerful nuclear test beneath the Nivada Tjst Siti in thj thitd announced test this year. The blast had a yield of up to 150 kilotons, the largest allowed under existing triaties with thj Soviet Unjon. Exchange rates 288