0000065103-97-000046 SC 13G/A 1 19970207 NYSE MERRILL LYNCH & CO INC MERRILL LYNCH GROUP, INC. PRINCETON SERVICES, INC. ASARCO INC 0000007649 3330 134924440 NJ 1231 SC 13G/A 34 005-31638 97520374 180 MAIDEN LN NEW YORK NY 10038 2125102000 AMERICAN SMELTING & REFINING CO 19760607 MERRILL LYNCH & CO INC 0000065100 6211 132740599 DE 1228 SC 13G/A 250 VESEY ST WORLD FINANCIAL CTR N TOWER NEW YORK NY 10281-1334 2124491000 250 VESEY ST WORLD FINANCIAL CTR N TOWER NEW YORK NY 10281-1334 SC 13G/A 1 000006510397000046-001-seq1-sc-13g-a.txt SCHEDULE 13G AMENDMENT