0000912057-99-006140 SC 14D1/A 2 19991115 ASARCO INC 0000007649 3330 134924440 DE 1231 SC 13D/A 34 005-31638 99755677 180 MAIDEN LN NEW YORK NY 10038 2125102000 AMERICAN SMELTING & REFINING CO 19760607 ASARCO INC 0000007649 3330 134924440 DE 1231 SC 14D1/A 34 005-31638 99755678 180 MAIDEN LN NEW YORK NY 10038 2125102000 AMERICAN SMELTING & REFINING CO 19760607 GRUPO MEXICO SA DE CV /FI 0001042701 SC 14D1/A BAJA CALIFORNIA NO 200 ROMA SUR 06760 MEXICO DF O5 0116255647066 BAJA CALIFORNIA 200 06760 MEXICO CITY O5 GRUPO MEXICO SA DE CV /FI 19971223 GRUPO MEXICO SA DE CV /FI 0001042701 SC 14D1/A BAJA CALIFORNIA NO 200 ROMA SUR 06760 MEXICO DF O5 0116255647066 BAJA CALIFORNIA 200 06760 MEXICO CITY O5 GRUPO MEXICO SA DE CV /FI 19971223 SC 14D1/A 1 000091205799006140-001-seq1-sc-14d1-a.txt SCHEDULE 14D/1A EX-99.1 2 000091205799006140-002-seq2-ex-99-1.txt EXHIBIT 99.1