Minera Andes Reports Mineral Resource Increase at Los Azules Project
TORONTO, ONTARIO – June 21st, 2010 - Minera Andes Inc. (the “Corporation” or “Minera
Andes”) (TSX: MAI and US OTC: MNEAF) is pleased to announce that the mineral resource at our 100%
owned copper project, Los Azules, has been expanded and the confidence level increased. A total of 137 million
tonnes of the previous inferred mineral resources have been upgraded to the indicated category, and an additional
116 million tonnes of inferred mineral resources have been added.
Rob McEwen, Chairman and CEO of Minera Andes commented:
“Los Azules is shaping up to be a world-class copper deposit, and we are excited about its
upside potential We have commenced planning for the next field season with the objective of
completing a pre- feasibility study by the end of 2011.”
In September of 2008, two independent qualified persons, Robert Sim and Bruce Davis, completed a resource
estimate for Los Azules showing inferred mineral resources of 922 million tonnes grading 0.55 percent copper,
equivalent to 11.2 billion pounds of copper. Based on this season’s drilling (23 holes totaling 10,007 meters) Mr.
Sim and Mr. Davis have prepared an updated estimate, results of which are outlined in the table below. Due to
tightening of the drill hole spacing, portions of the resource were upgraded to the indicated category. Also, the
inferred mineral resources increased due to a combination of step-out holes drilled at the north end of the deposit
and greater drill hole depths.
Total Mineral Resource Comparison
2008 vs 2010
Cut-off grade of 0.35% was applied to both 2008 and 2010 estimates
* Sept 26, 2008 technical report available on Sedar
Drilling this year was also successful in further delineating and expanding the high-grade secondary enrichment
zone. We use a cut-off grade of 0.70% copper to define “high-grade” mineralization. The high-grade
mineralization approximates the secondary e