AUKING MINING LIMITED — Board/Management Information 2013

Sep 3, 2013

Chinalco Yunnan Copper Resources Limited ABN 29 070 859 522

Suite 4, Level 8, 320 Adelaide Street Brisbane QLD 4000 GPO Box 216 Brisbane QLD 4001 Tel: +61 7 3211 9013 Fax: +61 7 3010 9001

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ASX Release

4 September 2013

Chinalco Yunnan Copper Resources Ltd (ASX: CYU) TREVOR LEAHEY APPOINTED EXPLORATION MANAGER

Chinalco Yunnan Copper Resources Limited (CYU) is pleased to advise that Mr Trevor Leahey has been appointed as Exploration Manager to replace the recently retired Richard Hatcher.

Mr Leahey graduated from Sydney University with a Bachelor of Science (Hons) in Applied Geology and Exploration Geophysics and has worked continuously for more than 35 years in exploration, project development and mining, both as a geologist and as a mining consultant specialising in data analysis and resource estimation.

Having worked in mine geologist roles for companies such as Cobar Mines Pty Ltd and Bougainville Copper Ltd, Mr Leahey has more recently been engaged in project management roles with Cerro Resources NL (discovery of the Kalman Mo-Re-Cu-Au deposit, Mt Isa) and Santana Minerals Ltd (management of the Namiquipa Silver Project, Chihuahua, Mexico).

CYU Managing Director, Paul Williams, said that CYU was very fortunate to have secured the services of Mr Leahey to oversee the company’s existing and planned future exploration and development activities. “Trevor brings to CYU a wealth of technical experience and expertise, especially in relation to the Mt Isa region, which is a key CYU focus area. With CYU’s existing projects and proposed future developments, it is intended that Trevor will oversee a very busy in-house exploration team based in Mt Isa.”

On behalf of the Board

Paul Williams Managing Director paul.williams@cycal.com.au +61 419 762 487

About CYU

Chinalco Yunnan Copper Resources Ltd (“CYU” or “Company”) is a resource exploration and development company with project interests in the Mt Isa region of north Queensland, Chile and northern Laos.

CYU’s largest shareholder is China Yunnan Copper (Australia) Investment and Development Co Ltd (“CYC”), owning 43% of the total issued shares in CYU. CYC is a wholly-owned subsidiary of Kunming-based Yunnan Copper Industry (Group) Co Ltd, which is the third largest producer of smelted copper product in China. In turn, Yunnan Copper Group is a subsidiary of Aluminium Corporation of China (Chinalco) which is the largest producer of aluminium product in China and the second largest world-wide.

CYU has offices in Brisbane, Mount Isa and in Santiago. The Company is listed on the ASX under the symbol “CYU”.

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