MINING INFORMATION, COMMUNICATION AND MONITORING S.A.
(MICOMO S.A.)
December 31st, 2006

Legal status
Private limited company
Company name: MICOMO S.A.
RUT: 76.561.210-1

Capital subscribed and paid in
Capital subscribed and paid by Codelco is US$2,030,000.

Purpose
MICOMO S.A. was constituted jointly with NNT AdvancedTechnology Corporation (Japan) and NTT Leasing (USA), Inc.10 April 2006. The purpose of the company is to provide, design and maintain the information technology and communications products and services related to Codelco and extends the mentioned business to foreign and Chile's mining companies.

Board of Directors
Mario Espinoza Durán, President (*)
Juan Enrique Morales Jaramillo (*)
Pedro Antonio Morales Cerda (*)
Marco Orellana Silva (*)
Hiroshi Kotera NTT Advanced Technology
Toshihiro Ichino NTT Leasing Co. Ltd.

General Manager
José Robles Becerra (*)

Codelco's share of capital and changes during the fiscal year
Capital subscribed and paid increased to 66%.

Contracts with Codelco
Agreement to develop the corporate information and telecommunications road map.

Investments as a percentage of total head office
2006 Investment in subsidiary US$1,959,000.
Total investment as a percentage of head office assets: 0.015%, 2006.