Extension to offer period for ENRC

3 June 2013

EXTENSION TO OFFER PERIOD FOR ENRC PLC

The Board of Kazakhmys (the 'Board') notes the 21 day extension to the 'PUSU' announced today by ENRC.

The Board welcomes the extension, made in response to a request from the bidding Consortium, which should provide time for discussions to continue and allow the Consortium to put a formal proposal for the Independent Committee and shareholders of ENRC, including Kazakhmys, to consider.

In the event that a formal proposal is made, the Board will make its decision in the best interests of all Kazakhmys shareholders and any acceptance of a proposal will be subject to the approval of Kazakhmys' shareholders.

Simon Heale, Chairman of Kazakhmys PLC said: 'I note the Independent Committee of ENRC has granted additional time to the Consortium. This is a complicated situation, given the current difficulties ENRC is experiencing. Should a proposal be tabled, the Board of Kazakhmys will remain focused on the best interests of all its shareholders having regard to all relevant factors.'

Kazakhmys is being advised by Citi and J.P. Morgan Cazenove.

For further information please contact:

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Kazakhmys PLC is a leading international natural resources group with significant interests in copper, gold, zinc, silver and power generation.

It is the largest copper producer in Kazakhstan and one of the top worldwide with 16 operating mines, 10 concentrators and 2 copper smelters. Kazakhmys Mining's operations are fully integrated from mining ore through to the production of finished copper cathode and rod. Total copper cathode equivalent produced in 2012 from own ore was 292 kt. Production is backed by a captive power supply and significant rail infrastructure.

Kazakhmys Mining produces significant volumes of other metals, including zinc, silver and gold. In 2012, it produced 152 kt of zinc in concentrate. The Group is amongst the largest silver producers in the world with 12.6 Moz produced in 2012.

Kazakhmys Power has a 50% interest in the coal fired Ekibastuz GRES-1 plant, the largest in Kazakhstan. The plant is undergoing a modernisation programme to take current capacity of 3,000 MW to its nameplate capacity of 4,000 MW. Kazakhmys Power also operates the captive power stations which supply electricity to Kazakhmys Mining.

The Group is listed on the London Stock Exchange, the Kazakhstan Stock Exchange (KASE) and the Hong Kong Stock Exchange (HKSE). It had revenues from continuing operations of $3.4 billion in 2012 with GroupEBITDA (excluding special items) of $1.9 billion. The Group employs around 60,000 people, principally in Kazakhstan. The Group's strategic aim is to optimise its current operations, deliver its major growth projects and to diversify and participate in the development of the significant natural resource opportunities in Central Asia.

Citigroup Global Markets Limited ("Citi"), which is authorised by the Prudential Regulation Authority, and regulated by the Prudential Regulation Authority and the Financial Conduct Authority, is acting exclusively for Kazakhmys and no-one else in connection with the matters set out in this announcement and will not be responsible to any person other than Kazakhmys for providing the protections afforded to clients of Citigroup Global Markets Limited or for providing advice in relation to the matters set out in this announcement.

J.P. Morgan Limited, which conducts its UK investment banking businesses as J.P. Morgan Cazenove ("J.P. Morgan Cazenove"), is authorised and regulated in the United Kingdom by the Financial Conduct Authority. J.P. Morgan Cazenove is acting as financial adviser and broker exclusively for Kazakhmys and no one else in connection with the matters set out in this announcement and will not regard any other person as its client in relation to the matters in this announcement and will not be responsible to anyone other than Kazakhmys for providing the protections afforded to clients of J.P. Morgan Cazenove, nor for providing advice in relation to any matter referred to herein.