AUKING MINING LIMITED — Board/Management Information 2013

Aug 27, 2013

Chinalco Yunnan Copper Resources Limited Level 5, 10 Market Street Brisbane QLD 4000 GPO Box 216 Brisbane QLD 4001 Tel: +61 7 3212 6204 Fax: +61 7 3212 6250

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ASX Announcement

28 August 2013

Chinalco Yunnan Copper Resources Ltd (ASX: CYU)

Resignation of Director

Chinalco Yunnan Copper Resources Ltd (“CYU” or “Company”) advises that Mr Richard Hatcher has resigned as a Director and Executive of the Company to pursue other opportunities.

Mr Paul Williams, Managing Director of CYU, commented “Since joining the company, initially as Exploration Manager in May 2008, Richard has made a substantial contribution to CYU in relation to the portfolio of projects held by CYU. The Board wishes to thank Richard for his long-term service to the Company and we wish him well for the future.”

On behalf of the Board

Paul Marshall Company Secretary

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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