| PHELPS DODGE CORP | Freeport-McMoRan Copper & Gold Inc acquired Phelps Dodge Corp. | 03/21/2007 |
| CYPRUS AMAX MINERALS CO | Phelps Dodge Corp acquired Cyprus Amax Minerals Company. | 12/02/1999 |
| COBRE MINING COMPANY INC. | Phelps Dodge Corp acquired Cobre Mining Company inc. | 03/06/1998 |
| FREEPORT-MCMORAN COPPER COMPANY INC | Name change from Freeport-McMoran Copper Company Inc to Freeport-McMoran Copper & Gold Inc. | 01/31/1991 |