Taseko Announces a New 7.7 Million oz Gold and 3.6 Billion lb Copper Reserve at Prosperity

November 2, 2009

November 2, 2009, Vancouver, BC - Taseko Mines Limited (TSX: TKO; NYSE Amex: TGB) (“Taseko” or the “Company”) is pleased to announce a 70% increase in mineral reserves at its 100% owned Prosperity Project, from 487 million tonnes to 830 million tonnes.

The reserve increase will add 3.0 million ounces of recoverable gold and 1.6 billion lbs of recoverable copper to the Prosperity reserve base, bringing total recoverable metal to 7.7 million ounces of gold and 3.6 billion lbs of copper.

This increase in recoverable metal, under present mine design criteria, extends Prosperity’s mine life from 20 years to 33 years.

Reserves were previously based on a $5.25 Net Smelter Return (“NSR”) cut-off using gold and copper prices of $500/oz and $1.50/lb, respectively. Current reserves are based on a $5.50 NSR cut-off using gold and copper prices of $650/oz and $1.65/lb, respectively.

Russell Hallbauer, President and CEO of Taseko commented, “In keeping with our historically conservative approach to reserve calculations, we have modestly adjusted our gold and copper price assumptions to better reflect longer-term metal price expectations. This increase in metal price assumptions will allow us to mine deeper, higher grade mineralization.

Prosperity now has the largest gold/copper reserve base of any mining project in Canada. At present gold and copper prices the projected operating costs per ounce of gold, net of copper credit, will be negative US$330/oz. With the size of this reserve and the longevity of its mine life, Prosperity will be one of the great mines of Canada. The 64% increase in recoverable gold and 80% increase in recoverable copper will allow Prosperity to operate for over 3 decades.

We look forward to the upcoming completion of our Environmental Assessment Review and getting on with building a mine that can benefit so many local, provincial and national stakeholders.”

Mineral Reserves @ C$5.50 NSR/t Cut-Off

M Tonnes


Recoverable Metal

Contained Metal

Au (g/t) Cu (%) Au (M oz) Cu (B lbs) Au (M oz) Cu (B lbs)
Proven 481 0.46 0.26 5.0 2.4 7.1 2.8
Probable 350 0.35 0.18 2.7 1.2 3.9 1.4
Total 831 0.41 0.23 7.7 3.6 11.0 4.2

Note: Recoveries for Cu and Au are 87% and 69% respectively

Remaining measured and indicated resources are grading 0.40 g/t gold and 0.30% copper containing 2.3 million ounces of gold and 1.2 billion lbs of copper (no recoveries applied).

The mineral resource and reserve estimations were completed by Taseko staff under the supervision of Scott Jones, P.Eng., Vice-President, Engineering and a Qualified Person under National Instrument 43-101. Mr Jones has verified the methods used to determine grade and tonnage in the geological model, reviewed the long range mine plan, and directed the updated economic evaluation. The estimates for the reserves used long term metal prices of US$1.65/lb for copper and US$650/oz for gold and a foreign exchange of C$0.82 per US dollar. Mr Jones has reviewed this release. A technical report will be filed on www.sedar.com.

For further information on Taseko, please see the Company’s website www.tasekomines.com or contact:

Brian Bergot, Investor Relations - 778-373-4545, toll free 1-800-667-2114

Russell Hallbauer
President and CEO

No regulatory authority has approved or disapproved of the information contained in this news release.


This document contains “forward-looking statements” that were based on Taseko’s expectations, estimates and projections as of the dates as of which those statements were made. Generally, these forward-looking statements can be identified by the use of forward-looking terminology such as “outlook”, “anticipate”, “project”, “target”, “believe”, “estimate”, “expect”, “intend”, “should” and similar expressions.

Forward-looking statements are subject to known and unknown risks, uncertainties and other factors that may cause the Company’s actual results, level of activity, performance or achievements to be materially different from those expressed or implied by such forward-looking statements. These included but are not limited to:

  • uncertainties and costs related to the Company’s exploration and development activities, such as those associated with continuity of mineralization or determining whether mineral resources or reserves exist on a property;
  • uncertainties related to the accuracy of our estimates of mineral reserves, mineral resources, production rates and timing of production, future production and future cash and total costs of production and milling;
  • uncertainties related to feasibility studies that provide estimates of expected or anticipated costs, expenditures and economic returns from a mining project;
  • uncertainties related to our ability to complete the mill upgrade on time estimated and at the scheduled cost;
  • uncertainties related to the ability to obtain necessary licenses permits for development projects and project delays due to third party opposition;
  • uncertainties related to unexpected or ongoing judicial or regulatory proceedings;
  • changes in, and the effects of, the laws, regulations and government policies affecting our exploration and development activities and mining operations, particularly laws, regulations and policies;
  • changes in general economic conditions, the financial markets and in the demand and market price for copper, gold and other minerals and commodities, such as diesel fuel, steel, concrete, electricity and other forms of energy, mining equipment, and fluctuations in exchange rates, particularly with respect to the value of the U.S. dollar and Canadian dollar, and the continued availability of capital and financing;
  • the effects of forward selling instruments to protect against fluctuations in copper prices and exchange rate movements and the risks of counterparty defaults, and mark to market risk;
  • the risk of inadequate insurance or inability to obtain insurance to cover mining risks;
  • the risk of loss of key employees; the risk of changes in accounting policies and methods we use to report our financial condition, including uncertainties associated with critical accounting assumptions and estimates;
  • environmental issues and liabilities associated with mining including processing and stock piling ore; and
  • labour strikes, work stoppages, or other interruptions to, or difficulties in, the employment of labour in markets in which we operate mines, or environmental hazards, industrial accidents or other events or occurrences, including third party interference that interrupt the production of minerals in our mines.

For further information on Taseko, investors should review the Company’s annual Form 40-F filing with the United States Securities and Exchange Commission www.sec.gov and home jurisdiction filings that are available at www.sedar.com.

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