MINERA GABY S.A.
December 31st, 2006

Legal status
Private limited company
Company name: MINERA GABY S.A.
R.U.T.: 76.685.790-6

Codelco's share capital and paid in
Capital Subscribed and paid in by Codelco was US$ 20,073,000.

Purpose
Minera Gaby S.A. was constituted by Codelco jointly with Sociedad de Inversiones Copperfield Limitada, 22 September 2006. The purpose of the company is to explore, recognize, prospect, research, develop and exploit the mineral deposits.

Board of Directors
José Pablo Arellano, President (*)
Juan Eduardo Herrera, Director (*)
Juan Enrique Morales, Director (*)
Fernando Vivanco, Director (*)
Francisco Tomic, Director (*)
Waldo Fortin Cabezas, Director (*)
Mario Espinoza Durán, Director (*)

General Manager
Luis Farías Lasarte (*)

Principal Executives
Mario Serrano Lazo, Strategic planning and Management Control Director
Arturo Merino Espinoza, Human Development Director
Sandra Riquelme Polanco, Sustainability Manager
Eliseo Pérez Delard, Mining Resources and Development Manager
Ricardo Montoya Peredo, Production Manager
Víctor Olate Martínez, Manager of Supply and Project services
Codelco's share of capital and changes during the fiscal year
Codelco's holdings account for 99.9% of subscribed and paid in shares.

Commercial relation with Codelco
There were no commercial relations between this firm and Codelco

Contracts with Codelco
This firm has no commercial contracts with Codelco

Investment as a percentage of total head office
2006 Investment in subsidiary US$19,888,000
Total investment as a percentage of head office assets: 0.155%, 2006