MONGOLIA – Hugo North Extension estimate

The first ore reserve estimate for Entrée Gold’s Hugo North Extension deposit shows probable reserves of 27 million tonnes grading 1.85% copper and 0.72 grams/tonne gold.


The reserves have been defined under the NI43-101 criteria and the estimate was part of the 2010 Integrated Development Plan (IDP10) for the Oyu Tolgoi mining complex announced by Ivanhoe Mines.

IDP10 declares the first underground mineral reserves for the Hugo North deposit, including Entrée’s Hugo North Extension deposit.

Entrée holds a 20% carried interest to production in this reserve through a joint venture with Oyu Tolgoi LLC, a subsidiary of Ivanhoe Mines.

IDP10 has presented two main mining scenarios: the Reserve Case and the Life of Mine (LOM) Sensitivity Case. The Reserve Case is the most likely scenario for reserves exploited in the initial (Lift 1) underground block cave mining operation, including the reserve for Hugo North Extension.

Probable reserves and inferred and indicated resources at Hugo North Extension and at the Heruga deposit are part of the LOM Sensitivity Case development and mining scenario.
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