Trabajo Sondaje

INTRODUCTION LETTER

Dear Customers: We are pleased to introduce DIAMANTINA CHRISTENSEN trading company. Diamantina Christensen is a newly formed company that represents the union of Christensen Chile S.A. and Boyles Bros. Diamantina S.A., leaders in the supply of geological exploration products. Each of these companies is well known and respected for their experience and commitment to qualityand service. Diamantina Christensen was founded in order to offer you the convenience of a one-stop shopping store in combination with our considerable manufacturing and logistic capabilities. Our goal is to serve our customers' needs with a complete line of diamond drilling tools and accessories. Both the Chile and Peru plants are ISO 9001:2000 certified, thus assuring you the utmost in qualityand consistency. Along with this introduction letter, please find an overview of our manufacturing facilities and the latest Diamantina Christensen product catalog. This product catalog will serve to demonstrate to you just how fully equipped we are to fulfill all of your drilling supply needs. Best Regards,

Humberto Arce General Manager

Fernando Buttazzoni Vice President

Copyright © 2006Diamantina Christensen. All rights reserved. No part of this catalogue may be produced, by any means, without the prior written permission.

INTRODUCTION LETTER

I MIN NG

P

S RO DUCT

Christensen Chile S.A. Founded in 1964, Christensen Chile was formed under the principle of providing quality products and service at a fair price, thusly maximizing value. Today, our modern industrialfacilities and broad commercial platform gather the most prestigious representations in the mining industry's percussion, core and water well drilling markets worldwide. Located in an industrial complex in Santiago, Christensen Chile's facilities cover a surface area of nearly 250,000 square feet. The industrial plant (of approximately 60,000 square feet) uses state-of-the-art technology andequipment to manufacture drill bits, rods, and spare parts to meet the requirements of today's demanding market.

Constant research and field work experience in diamond core and percussion drilling have permitted Christensen Chile to constantly improve its vast array of tools. Also, the experience gained through Christensen Chile's participation in these processes has made it possible to develop themost modern techniques for products required in the drilling and exploration industries worldwide.

Copyright © 2006 Diamantina Christensen. All rights reserved. No part of this catalogue may be produced, by any means, without the prior written permission.

INTRODUCTION LETTER

Boyles Bros Diamantina S.A. Boyles Bros. Diamantina S.A. has long been a pioneer in the manufacturer of diamondproducts in Peru. Our fifty years of experience have allowed us to accumulate a great amount of knowledge about how to design diamond bits and tools that best suit given ground conditions.

Located on the outskirts of Lima Peru, in a 50,000 square foot facility, our manufacturing process is carried out using the latest in high tech equipment and procedures. Additionally, our highly qualifiedpersonnel frequently visit customer drilling sites to evaluate usage and performance of our products. This service not only helps our customers to better use our products, but also helps us to improve our products in order to better serve our customers needs. This combination of quality product, and quality service, lead to more successful drilling results for our customers. Product quality is apriority for us, and our manufacturing technique is based on integrating work from all areas of our company as well as maintaining ongoing research and development. High quality products are further assured by the use of the finest in raw materials, and the latest advances in manufacturing equipment.

Copyright © 2006 Diamantina Christensen. All rights reserved. No part of this catalogue may be...