Copper North Announces Design Changes At Carmacks Copper Mine

Vancouver, British Columbia � Copper North Mining Corp. ("Copper North" or the "Company") (TSX.V: COL) announces changes to the plans for development and closure of the Carmacks Copper Mine ("Carmacks") located in the Yukon, Canada.

The Carmacks Copper Mine is a proposed open-pit mine which will utilize acid heap leaching technology to extract copper, and a solvent extraction and electrowinning processing facility to remove copper from solution and produce copper cathode. The mine has obtained a Quartz Mining Licence and is permitted to start construction. Once in operation, it will produce approximately 32 million pounds of cathode copper per year at an estimated cash cost of US$0.84/lb of copper based on a positive Feasibility Study completed in May 2007. Copper North has commissioned an update of the 2007 Feasibility Study which is expected to be complete at the end of the second quarter 2012 (see News Release dated, February 1, 2012).

The design changes to the Heap Leach Facility (�HLF�) are part of the Company�s on-going project optimization plan which focuses primarily on operations and closure of the HLF.The design changes aredirected toward improving operational management of the HLF and to ensure successful closure by implementing industry standard closure technology. We believe that these changes (which are currently under review by the Yukon regulators) will address the issues raised by the Yukon Water Board in response to the previous Water Use License (�WUL�) Application (QZ08-084).

The Company has engaged Golder Associates (�Golder�) to prepare a revised feasibility level design for the permanent HLF, to update the site wide water balance, and to incorporate the water quality model into the water balance model as Copper North prepares its re-application for a WUL.

In addition, Copper North has engaged the service of HydroGeoSense Inc. (�HydroGeoSense�) HydroGeoSense was established in 2009 by Principal Hydrogeologist and leaching industry veteran, Amado Guzman. HydroGeoSense provides hydrodynamic services to the mining and environmental industries from process design, operational troubleshooting, to closure of facilities.

HLF Operation and Closure

Development of the permanent HLF will be modified to include the use of inter-lift liners. The inter-lift liners will function to promote leaching efficiency by preventing pregnant leachate solution (�PLS�) from entering previously leached ore lifts and expeditingthe PLS flow to the process plant. The benefits of inter-lift liners include:

• Ensuring good heap permeability throughout operation
• Reducing the copper inventory in the heap
• Reduced water treatment and sludge generation during operations and closure

• Volume of water draining from the heap at closure is significantly reduced - drastically reducing the volume of water requiring treatment and therefore the quantity of sludge generated by the water treatment plant.

About Copper North

Copper North is a Canadian mineral exploration and development company. Copper North�s mineral resource assets include the Carmacks Copper Mine located in the Yukon, and the high-grade, stratiform-copper Redstone Deposit, located in the Northwest Territories. Copper North trades on the TSX Venture Exchange under the symbol COL.

Please visit www.coppernorthmining.com.

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