This new mine plan is a result of a detailed, six-month engineering study and forms the basis of an updated NI 43-101 compliant reserve.

Highlights of the mine plan are:

  • 749 million tons grading 0.272% copper equivalent.
  • Recoverable copper of 3.3 billion pounds and 62 million pounds of molybdenum.
  • Annual production of approximately 138 million pounds of copper and 2.6 million pounds of molybdenum at a milling rate of 85,000 tons per day.
  • 24 years of operation, at a milling rate of 85,000 tons per day.
  • Average strip ratio decreased to 1.9:1 (from 4.3:1).
  • Copper cut-off decreased to 0.15% (from 0.20%)

Taseko president and CEO Russell Hallbauer said: "After a year of operating an upgraded and modernized Gibraltar at capacity, we have gained a thorough understanding of Gibraltar’s cost structure and capabilities, both in the mine and mill. While our milling costs have declined due to technology enhancements, mining costs have increased from historical levels due to fuel, labour, parts as well as haul distance.

"The new mine plan takes these factors into account and focusses on reducing tons mined and maximizing profitability on a cost per ton milled basis. The lower strip ratio results in a significant decrease in mining costs and total cost per ton milled, compared to operating at a 0.20% copper cut-off, more than offsetting the reduced average copper grade.

"To put this in perspective, every point of strip ratio is equal to approximately 31 million tons of waste that does not need to be mined annually, and at $1.85 per ton mined, amounts to roughly $57 million of annual savings. While optimized mine scheduling isn’t yet finalized, we expect cost per ton milled (including mining costs, milling costs and site G&A) in the new mine plan to remain at a level similar to today, approximately C$10.00."

Mr. Hallbauer added, "Simply put, the new mine plan will contribute to lower costs and higher cash flows over its long mine life. At today’s metal prices and Canadian dollar exchange rate, based on the average strip ratio and grade in the new mine plan, we believe Gibraltar could generate approximately $100 million of annual operating profit. The leverage to the price of copper is significant and a 10% increase in metal prices would lift cash flow by more than 50%."

The reserve evaluation used a 0.15% copper cut-off, incorporating a $2.75/lb copper and a 0.85 C$/US$ foreign exchange rate pit shell design.

The result is a pit design that maintains current reserve tonnage, mines 45% less total material and maintains the ability to extract the remaining resource.