Menu

Gibraltar - Reserves & Resources

The Company has filed an updated mineral reserve estimate and NI 43-101 Technical Report entitled “Technical Report on the Mineral Reserve Update at the Gibraltar Mine” dated March 30, 2022.

Gibraltar’s updated proven and probable sulphide reserves as of December 31, 2022 are as follows:

Category Tons
(millions) 		Grade Contained Metal
Cu (%) Mo (%) Cu (B lbs)
Sulphide Mineral Reserves Effective December 31, 2022 at a 0.15% Cu cut-off
Proven 491 0.26 0.008 2.5
Probable 177 0.22 0.008 0.8
Ore Stockpiles 8 0.18 0.007 0.0
Total P&P Sulphide Reserves 676 0.25 0.008 3.3
Mineral Resources Effective December 31, 2022 at a 0.15% Cu cut-off
Measured 827 0.25 0.007 4.2
Indicated 355 0.23 0.007 1.6
M&I Resources 1,182 0.24 0.007 5.8
Inferred 78 0.22 0.004 0.3
  1. The resource and reserve estimation was completed under the supervision of Richard Weymark, P. Eng., MBA, Vice President, Engineering for Taseko and a Qualified Person under NI 43-101.
  2. Gibraltar Mineral Reserves and Mineral Resources follow CIM Definition Standards for Mineral Resources and Mineral Reserves (2014).
  3. Sulphide Mineral Reserves are exclusive of Oxide Mineral Reserves and are contained within Mineral Resources.
  4. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.
  5. Mineral Reserves are assumed to be extracted using open pit mining methods and are based on US$3.05/lb Cu price, $12.00/lb Mo price, exchange rate of US$0.80=C$1.00, metallurgical recoveries of 85% TCu and 40% Mo for sulphide ore and 50% ASCu for oxide ore.
  6. The Mineral Resource has been confined by a “reasonable prospects of eventual economic extraction” pit using the following assumptions: Cu price of US$3.50/lb, Mo price of US$14.00/lb, exchange rate of US$0.80=C$1.00, metallurgical recoveries of 85% for TCu and 40% for Mo.
  7. A tonnage factor of 12ft3/ton has been applied for rock and 15ft3/ton for overburden and fill.
  8. Numbers may not add due to rounding.

Qualified Persons and 43-101 Disclosure

This technical content of the webiste has been reviewed and approved by Richard Weymark, P.Eng., MBA, Vice President, Engineering of Taseko. Mr. Weymark is a Qualified Person under the provisions of National Instrument 43-101 published by the Canadian Securities Administrators.

The resource and reserve estimation was completed by Taseko and Gibraltar Mine staff and contributing consultants under the supervision of Richard Weymark, P. Eng., MBA. Vice President, Engineering of Taseko and a Qualified Person under National Instrument 43-101.

Additional information regarding data verification procedures, known legal, political, environmental or other risks can be found in the Technical Report dated March 30, 2022, titled ‘Technical Report on the Mineral Reserve Update at the Gibraltar Mine’ which is available below.

Technical Report on the Mineral Reserve Update at the Gibraltar Mine

Mar 30, 2022
.