HOCHSCHILD MINING PLC — AGM Information 2012

Apr 24, 2012

Hochschild Mining plc

Notice of Annual General Meeting Wednesday, 23 May 2012 at 10am

This document is important and requires your immediate attention

If you are in any doubt about the contents of this document you should consult a person authorised under the Financial Services and Markets Act 2000 who specialises in advising in connection with shares and other securities.

If you have sold or otherwise transferred all of your shares in Hochschild Mining plc (the "Company") please send this document, together with the accompanying Form of Proxy, to the purchaser or transferee or to the stockbroker, bank or other agent through whom the sale or transfer was effected, for transmission to the purchaser or transferee.

Contents

• 3 Letter from the Chairman
• 4 Notice of Annual General Meeting
• 6 Notes to the Notice of AGM
• 8 Explanatory Notes on Resolutions
• 10 Information on the AGM Venue
• 11 Shareholder Information

Letter from the Chairman

Hochschild Mining plc

(incorporated and registered in England and Wales No. 05777693)

Registered Office: 46 Albemarle Street London W1S 4JL

18 April 2012

Dear Shareholder

I am pleased to invite you to attend the sixth Annual General Meeting (the "AGM") of Hochschild Mining plc (the "Company") which will be held at 10am on Wednesday, 23 May 2012 at the offices of Linklaters LLP, One Silk Street, London EC2Y 8HQ.

This document includes the Notice of AGM in which we have set out the resolutions that shareholders are being asked to vote on. An explanation of the business to be conducted at the meeting is included on pages 8 and 9.

In keeping with the Company's usual practice, voting at the AGM will be conducted by way of poll vote.

The AGM provides shareholders with an opportunity to communicate with their Board and we welcome your participation.

Your Board considers that the proposals described in this document are likely to promote the success of the Company for the benefit of shareholders as a whole and unanimously recommends shareholders to vote in favour of the resolutions proposed.

Those Directors who hold Ordinary Shares in the Company intend to vote their shares in favour of all of the resolutions.

I would like to draw your attention to Resolution 18, which seeks to renew the authority granted by shareholders at the last year's AGM to call a shareholders' meeting (other than an AGM) on no less than 14 clear days' notice.

I would encourage shareholders to exercise their right to vote on the business of the meeting by completing and submitting the Form of Proxy in accordance with the accompanying instructions or alternatively by visiting www.capitashareportal.com.

Finally, as you may have read in the 2011 Annual Report, one of our Non-Executive Directors, Dionisio Romero will be retiring from the Board at the forthcoming AGM. I would like to take this opportunity to express my gratitude to Dionisio, both on a personal level and on behalf of the Board for his invaluable contribution to Hochschild Mining since our listing in London in 2006. We wish Dionisio the very best for the future.

I look forward to seeing you at the AGM.

Eduardo Hochschild Executive Chairman

Notice of Annual General Meeting

Notice is hereby given that the sixth Annual General Meeting of Hochschild Mining plc (the "Company") will be held at 10am on Wednesday, 23 May 2012 at the offices of Linklaters LLP, One Silk Street, London EC2Y 8HQ to consider the following resolutions of which Resolutions 1 to 15 will be proposed as ordinary resolutions and Resolutions 16 to 18 will be proposed as special resolutions.

Ordinary resolutions

• 1 THAT, the audited accounts of the Company for the year ended 31 December 2011, together with the Directors' Report and the Auditors' Report thereon be received.
• 2 THAT, the Directors' Remuneration Report for the year ended 31 December 2011 be approved.
• 3 THAT, a final dividend for the financial year ended 31 December 2011 of US\$0.03 per Ordinary Share be approved.
• 4 THAT, Eduardo Hochschild be re-elected as a Director of the Company.
• 5 THAT, Ignacio Bustamante be re-elected as a Director of the Company.
• 6 THAT, Graham Birch be elected as a Director of the Company.
• 7 THAT, Jorge Born Jr. be re-elected as a Director of the Company.
• 8 THAT, Roberto Dañino be re-elected as a Director of the Company.
• 9 THAT, Sir Malcolm Field be re-elected as a Director of the Company.
• 10 THAT, Nigel Moore be re-elected as a Director of the Company.
• 11 THAT, Rupert Pennant-Rea be elected as a Director of the Company.
• 12 THAT, Fred Vinton be re-elected as a Director of the Company.
• 13 THAT, Ernst & Young LLP be re-appointed as auditors of the Company (the "Auditors") until the conclusion of the next general meeting at which accounts are laid before the Company.
• 14 THAT, the Audit Committee of the Company be authorised to set the remuneration of the Auditors.
• 15 THAT, the Directors be and are hereby generally and unconditionally authorised pursuant to and in accordance with Section 551 of the Companies Act 2006 (the '2006 Act') to exercise all the powers of the Company to allot shares or grant rights to subscribe for or to convert any security into shares:
• 15.1 up to a nominal amount of £28,173,768
• 15.2 comprising equity securities (as defined in Section 560(1) of the 2006 Act) up to a further nominal amount of £28,173,768 in connection with an offer by way of a rights issue,

such authorities to apply in substitution for all previous authorities and to expire at the end of the next Annual General Meeting or on 30 June 2013, whichever is the earlier but, in each case, so that the Company may make offers and enter into agreements during the relevant period which would or might require shares to be allotted or rights to subscribe for or to convert any security into shares to be granted after the authority ends.

For the purposes of this Resolution "rights issue" means an offer to:

• (i) ordinary shareholders in proportion (as nearly as may be practicable) to their existing holdings; and
• (ii) people who are holders of other equity securities if this is required by the rights of those securities or, if the Directors consider it necessary, as permitted by the rights of those securities,

to subscribe for further securities by means of the issue of a renounceable letter (or other negotiable document) which may be traded for a period before payment for the securities is due, but subject in both cases to such exclusions or other arrangements as the Directors may deem necessary or expedient in relation to treasury shares, fractional entitlements, record dates or legal, regulatory or practical problems in, or under the laws of, any territory.

Special resolutions

• 16 THAT, subject to the passing of Resolution 15 above, the Directors be empowered to allot equity securities (as defined in Section 560(1) of the 2006 Act) wholly for cash:
• 16.1 pursuant to the authority given by paragraph 15.1 of Resolution 15 above or where the allotment constitutes an allotment of equity securities by virtue of Section 560(3) of the 2006 Act in each case:
  • (i) in connection with a pre-emptive offer; and
  • (ii) otherwise than in connection with a pre-emptive offer, up to an aggregate nominal amount of £4,226,065; and
• 16.2 pursuant to the authority given by paragraph 15.2 of Resolution 15 above in connection with a rights issue,

as if Section 561(1) of the 2006 Act did not apply to any such allotment;

such power to expire at the end of the next Annual General Meeting or on 30 June 2013, whichever is earlier but so that the Company may make offers and enter into agreements during this period which would, or might, require equity securities to be allotted after the power ends.

For the purposes of this Resolution:

• (i) "rights issue" has the same meaning as in Resolution 15 above;
• (ii) "pre-emptive offer" means an offer of equity securities open for acceptance for a period fixed by the Directors to (a) holders (other than the Company) on the register on a record date fixed by the Directors of Ordinary Shares in proportion to their respective holdings and (b) other persons so entitled by virtue of the rights attaching to any other equity securities held by them, but subject in both cases to such exclusions or other arrangements as the Directors may deem necessary or expedient in relation to treasury shares, fractional entitlements, record dates or legal, regulatory or practical problems in, or under the laws of, any territory;
• (iii) references to an allotment of equity securities shall include a sale of treasury shares; and
• (iv) the nominal amount of any securities shall be taken to be, in the case of rights to subscribe for or convert any securities into shares of the Company, the nominal amount of such shares which may be allotted pursuant to such rights.

Notice of Annual General Meeting continued

• 17 THAT, the Company be and is hereby generally and unconditionally authorised for the purpose of Section 701 of the 2006 Act to make market purchases (as defined in Section 693 of that Act) of Ordinary Shares of £0.25 each in the capital of the Company provided that:
• 17.1 the maximum aggregate number of Ordinary Shares authorised to be purchased is 33,808,522 (representing an amount equal to 10%. of the Company's issued ordinary share capital as at 11 April 2012);
• 17.2 the minimum price which may be paid for an Ordinary Share is £0.25 per Ordinary Share;
• 17.3 the maximum price which may be paid for an Ordinary Share is an amount equal to the higher of (i) 105%. of the average of the closing price of the Company's Ordinary Shares as derived from the London Stock Exchange Daily Official List for the five business days immediately preceding the day on which such Ordinary Share is contracted to be purchased or (ii) the higher of the price of the last independent trade and the highest current bid as stipulated by article 5(1) of Commission Regulation (EC) 22 December 2003 implementing the Market Abuse Directive as regards exemptions for buy-back programmes and stabilisation of financial instruments (No 2273/2003);
• 17.4 this authority shall expire at the conclusion of the Annual General Meeting of the Company held in 2013 or, if earlier 30 June 2013 (except in relation to the purchase of shares the contract for which was concluded before the expiry of such authority and which might be executed wholly or partly after such expiry) unless such authority is renewed prior to such time.
• 18 THAT, a general meeting other than an Annual General Meeting may be called on not less than 14 clear days' notice.

By Order of the Board

R D Bhasin Company Secretary

18 April 2012

Hochschild Mining plc Registered Office: 46 Albemarle Street London W1S 4JL

Notes to the Notice of AGM

• 1 A member is entitled to appoint another person as his or her proxy to exercise all or any of his rights to attend and to speak and vote on his or her behalf at the AGM. A proxy need not be a member of the Company. A member may appoint more than one proxy in relation to the AGM provided that each proxy is appointed to exercise the rights attached to a different share or shares held by that member. To appoint more than one proxy please follow the notes contained in the proxy form.
• 2 The right to appoint a proxy does not apply to persons whose shares are held on their behalf by another person and who have been nominated to receive communications from the Company in accordance with Section 146 of the Companies Act 2006 ("2006 Act") ("Nominated Persons"). Nominated Persons may have a right under an agreement with the member who holds the shares on their behalf to be appointed (or to have someone else appointed) as a proxy. Alternatively, if Nominated Persons do not have such a right, or do not wish to exercise it, they may have a right under such an agreement to give instructions to the person holding the shares as to the exercise of voting rights.
• 3 A Form of Proxy is enclosed. Completion and return of a Form of Proxy will not prevent a member from subsequently attending the AGM and voting in person.
• 4 To appoint a proxy either (a) the Form of Proxy and any power of attorney or other authority under which it is signed (or a duly certified copy of any such authority) must be deposited with the Company's registrars, Capita Registrars Limited (''Capita''), at PXS, 34 Beckenham Road, Beckenham BR3 4TU, United Kingdom or (b) the proxy appointment must be lodged using the CREST Proxy Voting Service in accordance with note 6 below or (c) the proxy appointment must be made by visiting www.capitashareportal.com, in each case, not less than 48 hours before the time of the holding of the AGM or any adjournment thereof.
• 5 Pursuant to regulation 41(1) of the Uncertificated Securities Regulations 2001 (2001 No. 3755), the Company specifies that only those shareholders registered on the register of members of the Company at 6pm on 21 May 2012 shall be entitled to attend and vote at the AGM in respect of the number of Ordinary Shares registered in their name at that time. Changes to the register of members after 6pm on 21 May 2012 shall be disregarded in determining the rights of any person to attend and vote at the AGM.
• 6 CREST members who wish to appoint a proxy or proxies by utilising the CREST electronic proxy appointment service may do so for the AGM and any adjournment(s) thereof by utilising the procedures described in the CREST Manual. CREST personal members or other CREST sponsored members, and those CREST members who have appointed a voting service provider(s), should refer to their CREST sponsor or voting service provider(s), who will be able to take the appropriate action on their behalf. In order for a proxy appointment made by means of CREST to be valid, the appropriate CREST message (a "CREST Proxy Instruction") must be properly authenticated in accordance with Euroclear's specifications and must contain the information required for such instructions, as described in the CREST Manual (available via www.euroclear.com/CREST). The message must, in order to be valid, (regardless of whether it constitutes the appointment of a proxy or an amendment to the instruction given to a previously appointed proxy) be transmitted so as to be received by the issuer's agent (ID RA10) by the latest time

for receipt of proxy appointments specified above. For this purpose, the time of receipt will be taken to be the time (as determined by the timestamp applied to the message by the CREST Applications Host) from which the issuer's agent is able to retrieve the message by enquiry to CREST in the manner prescribed by CREST. After this time any change of instructions to a proxy appointed through CREST should be communicated to him or her by other means. CREST members and, where applicable, their CREST sponsors or voting service providers should note that Euroclear does not make available special procedures in CREST for any particular messages. Normal system timings and limitations will therefore apply in relation to the input of CREST Proxy Instructions. It is the responsibility of the CREST member concerned to take (or, if the CREST member is a CREST personal member or sponsored member or has appointed a voting service provider(s), to procure that his or her CREST sponsor or voting service provider(s) take) such action as shall be necessary to ensure that a message is transmitted by means of the CREST system by any particular time. In this connection, CREST members and, where applicable, their CREST sponsors or voting service providers are referred, in particular, to those sections of the CREST Manual concerning practical limitations of the CREST system and timings. The Company may treat as invalid a CREST Proxy Instruction in the circumstances set out in Regulation 35(5)(a) of the Uncertificated Securities Regulations 2001.

• 7 Any corporation which is a member can appoint one or more corporate representatives who may exercise on its behalf all of its powers as a member provided that they do not do so in relation to the same shares.
• 8 Copies of (i) the Letters of Appointment between the Company and its Non-Executive Directors; and (ii) the service contracts between the Company and the Executive Directors will be available for inspection at the registered office of the Company and at the offices of Linklaters LLP at One Silk Street, London EC2Y 8HQ, United Kingdom during usual business hours on any weekday (Saturdays, Sundays and public holidays excluded) until the date of the AGM and also on the date and at the place of the AGM from 15 minutes prior to the commencement of the meeting until the conclusion thereof.

9 Members should note that, under Section 527 of the 2006 Act, members meeting the threshold requirements set out in that section have the right to require the Company to publish on its website a statement setting out any matter relating to: (i) the audit of the Company's accounts (including the auditor's report and the conduct of the audit) that are to be laid before the AGM for the financial year beginning 1 January 2011; or (ii) any circumstance connected with an auditor of the Company appointed for the financial year beginning 1 January 2011 who ceases to hold office since the previous meeting at which annual accounts and reports were laid. The Company may not require the members requesting any such website publication to pay its expenses in complying with Sections 527 or 528 (requirements as to website availability) of the 2006 Act. Where the Company is required to place a statement on its website under Section 527 of the 2006 Act, it must forward the statement to the Company's auditor not later than the time when it makes the statement available on its website. The business which may be dealt with at the AGM for the relevant financial year includes any statement that the Company has been required to publish on its website under Section 527 of the 2006 Act.

Notes to the Notice of AGM continued

• 10 Holders of Ordinary Shares are entitled to attend and vote at general meetings of the Company. The total number of issued Ordinary Shares in the Company on 11 April 2012, which is the latest practicable date before the publication of this document, is 338,085,226, carrying one vote each on a poll. Therefore, the total number of votes exercisable as at 11 April 2012 is 338,085,226.
• 11 Any member with special needs wishing to attend the AGM should contact the Company's London office on +44 (0) 20 7907 2930, so that appropriate arrangements can be made.
• 12 Persons who are not members of the Company will not be admitted to the AGM unless prior arrangements have been made with the Company. Investors holding Ordinary Shares through nominees are welcome to attend provided that they bring proof of their holding with them to the AGM (see notes 1 and 2 above).
• 13 Members should note that doors to the AGM will open at 9.30am.
• 14 Please note that, for security reasons, all hand luggage may be subject to examination prior to entry being granted to the AGM. Cameras, tape recorders, laptop computers and similar equipment may not be taken into the AGM.
• 15 We ask all those present at the AGM to facilitate the orderly conduct of the meeting and the Company reserves the right, if orderly conduct is threatened by a person's behaviour, to require that person to leave.
• 16 Members may not use any electronic address provided in this Notice (or in any related documents including the Chairman's letter and Form of Proxy) to communicate with the Company for any purposes other than those expressly stated.
• 17 Any member attending the AGM has the right to ask questions. The Company must cause to be answered any such question relating to the business being dealt with at the meeting but no such answer need be given if (a) to do so would interfere unduly with the preparation for the meeting or involve the disclosure of confidential information, (b) the answer has already been given on a website in the form of an answer to a question, or (c) it is undesirable in the interests of the Company or the good order of the meeting that the question be answered.
• 18 A copy of this notice, and other information required by Section 311A of the 2006 Act, can be found at www.hochschildmining.com.
• 19 Each of the resolutions to be put to the meeting will be voted on by poll and not by show of hands. A poll reflects the number of voting rights exercisable by each member and so the Board considers it a more democratic method of voting. Members and proxies will be asked to complete a poll card to indicate how they wish to cast their votes. These cards will be collected at the end of the meeting. The results of the poll will be published on the Company's website and notified to the UK Listing Authority once the votes have been counted and verified.

Explanatory Notes on Resolutions

Resolution 1 – Annual report and accounts

The first item of business is the receipt, by shareholders, of the 2011 Annual Report together with the Directors' Report and the Auditor's Report. The Annual Report is prepared in accordance with International Financial Reporting Standards.

Resolution 2 – Directors' Remuneration Report

Shareholder approval is sought for the Directors' Remuneration Report for the year ended 31 December 2011 (the "Remuneration Report"). The Remuneration Report may be found on pages 77 to 87 of the Annual Report and gives details of Directors' remuneration for the year under review. As required by legislation, the Auditors have audited certain parts of the Remuneration Report as detailed in their report on pages 89 and 90 of the Annual Report.

Resolution 3 – Recommendation of final dividend

This resolution seeks shareholder approval of the final dividend recommended by the Directors. The Directors are proposing a final dividend of US\$0.03 per Ordinary Share in the Company. If approved, the final dividend will be paid on 29 May 2012 to those shareholders on the register at the close of business on 4 May 2012.

Resolutions 4 to 12 – Annual election of Directors

In line with the recommendation of the UK Corporate Governance Code, each Board member who has previously been elected is retiring at the AGM and submits himself for re-election by shareholders. Directors are also required to stand for election at the first AGM after their appointment.

Full biographical details of the Directors can be found on pages 60 and 61 of the 2011 Annual Report and Accounts. The Chairman is pleased to confirm that in light of the Board Evaluation process undertaken during 2011, he is satisfied that each Director makes an effective and valuable contribution to the Board and demonstrates commitment to his role. Given the timing of his appointment during the year, Rupert Pennant-Rea's performance was not assessed in 2011.

Resolution 13 – Re-appointment of auditors

The Company is required, at each general meeting at which accounts are presented, to appoint auditors to hold office until the next such meeting. Ernst & Young LLP has indicated its willingness to continue in office. The Board, on the recommendation of the Audit Committee, recommends the re-appointment of Ernst & Young LLP to hold office until the next meeting at which accounts are laid. Accordingly, Resolution 12 will, if passed, re-appoint Ernst & Young LLP as auditors to the Company (the "Auditors").

Resolution 14 – Remuneration of the Auditors

Resolution 14 seeks shareholder consent for the Company's Audit Committee to set the remuneration of the Auditors.

Resolution 15 – Authority to allot shares

The purpose of Resolution 15 is to renew the Directors' power to allot shares. The authority will allow the Directors to allot new shares and grant rights to subscribe for, or convert other securities into, shares up to a nominal value of £28,173,768, which is equivalent to approximately 33 per cent of the total issued ordinary share capital of the Company, exclusive of treasury shares, as at 11 April 2012.

The authority in paragraph 15.2 will allow the Directors to allot new shares and grant rights to subscribe for, or convert other securities into, shares only in connection with a rights issue up to a further nominal value of £28,173,768, which is equivalent to approximately 33 per cent of the total issued ordinary share capital of the Company, exclusive of treasury shares, as at 11 April 2012. This is in line with corporate governance guidelines.

At 11 April 2012, the Company did not hold any shares in treasury. There are no present plans to undertake a rights issue or to allot new shares. The Directors consider it desirable to have the maximum flexibility permitted by corporate governance guidelines to respond to market developments and to enable allotments to take place in appropriate circumstances. If the resolution is passed, the authority will expire on the earlier of 30 June 2013 and the end of the AGM in 2013.

Resolution 16 – Disapplication of pre-emption rights

If the Directors wish to allot new shares or other equity securities, or sell treasury shares, for cash (other than in connection with an employee share scheme) company law requires that these shares are offered first to shareholders in proportion to their existing holdings.

The purpose of paragraph 16.1 of Resolution 16 is to authorise Directors to allot new shares or sell treasury shares pursuant to the authority given by paragraph 15.1 of Resolution 15 for cash (i) in connection with a pre-emptive offer or (ii) otherwise up to a nominal value of £4,226,065, equivalent to 5 per cent of the total issued ordinary share capital of the Company as at 11 April 2012, in each case without the shares first being offered to existing shareholders in proportion to their existing holdings.

The purpose of paragraph 16.2 of Resolution 16 is to authorise the Directors to allot new shares pursuant to the authority given by paragraph 15.2 of Resolution 15, or sell treasury shares, for cash in connection with a rights issue without the shares first being offered to existing shareholders in proportion to their existing holdings. This is in line with corporate governance guidelines.

The Board considers the authority in Resolution 16 to be appropriate in order to allow the Company flexibility to finance business opportunities or to conduct a pre-emptive offer or rights issue without the need to comply with the strict requirements of the statutory pre-emption provisions. The Board has no immediate plans to make use of this authority.

The Board intends to adhere to the provisions in the Pre-emption Group's Statement of Principles not to allot shares for cash on a non pre-emptive basis (other than pursuant to a rights issue or pre-emptive offer) in excess of an amount equal to 7.5 per cent of the total issued ordinary share capital of the Company within a rolling three-year period without prior consultation with shareholders.

Explanatory Notes on Resolutions continued

Resolution 17 – Authority to buy shares

Under Section 701 of the 2006 Act ("Section 701") the directors of a company may make market purchases of that company's shares if authorised to do so by shareholders. The Directors believe that granting such approval would be in the best interests of shareholders in allowing them the flexibility to react promptly to circumstances requiring market purchases.

Accordingly, Resolution 17, which will be proposed as a special resolution, will, if passed, give the Directors authority to make one or more market purchases of the Company's shares under Section 701. The authority contained in this resolution will be limited to 33,808,522 Ordinary Shares having an aggregate nominal value of £8,452,130.50 which represents 10 per cent of the issued ordinary share capital of the Company as at 11 April 2012. The upper and lower limits on the price which may be paid for those shares are set out in the resolution itself.

Pursuant to the 2006 Act, shares purchased under this authority may be held as treasury shares. The Company may purchase and hold shares as treasury shares up to a maximum amount equal to 15 per cent of the nominal value of the issued Ordinary Shares at that time, rather than cancelling them. Shares held in treasury do not carry voting rights and no dividends will be paid on any such shares. Shares held in treasury in this way can be sold for cash or cancelled, either immediately or at a point in the future, or be used for the purposes of an employee share scheme. This would allow the Company to manage its capital base more effectively.

The Board has no present intention of exercising this authority. Shares will only be repurchased if the Directors consider such purchases to be in the best interests of shareholders generally and that they can be expected to result in an increase in earnings per share. The authority will only be used after careful consideration, taking into account market conditions prevailing at the time, other investment opportunities, appropriate gearing levels and the overall financial position of the Company. Shares held as treasury shares will not automatically be cancelled and will not be taken into account in future calculations of earnings per share (unless they are subsequently resold or transferred out of treasury).

This authority will expire on the earlier of 30 June 2013 and the Company's AGM in 2013.

Resolution 18 – General Meetings

This resolution is proposed in the light of the implementation of the Shareholder Rights Directive in August 2009. The regulations implementing this Directive increased the notice period for general meetings of the Company to 21 days unless shareholders have approved the calling of meetings on 14 days' notice. AGMs will continue to be held on at least 21 clear days' notice. This resolution seeks to renew the authority granted at last year's AGM.

The shorter notice period would not be used as a matter of routine for such meetings, but only where the flexibility is merited by the business of the meeting and is thought to be to the advantage of shareholders as a whole.

Information on the AGM Venue

Location

The 2012 AGM is being held at the offices of Linklaters LLP, the location of which is shown on the map below. Fortune Street

Transport details: How to get there by tube, train and car

Nearest tube station Moorgate or Barbican

Nearest train station Liverpool Street

Airports

London/Heathrow – LHR

Leave Heathrow Airport precinct in the direction of the M4. At the M4 turn left away from London and at the next junction leave the M4 and join the M25 heading North. At junction 16 of the M25 leave the M25 and join the M40/A40 going towards London. Follow the A40 along Marylebone Road, Euston Road and at King's Cross interchange follow signs for the City along Pentonville Road and City Road. At Finsbury Square turn right into Chiswell Street and Silk Street is the fourth turning on the left. London Wall

London/Gatwick – LGW

Leave Gatwick precinct heading towards the M23. Follow the M23/A23 towards London and at the Oval cricket ground join the A3. At the Elephant & Castle roundabout go on to Newington Causeway and continue straight on to cross London Bridge. Fork right into Gracechurch Street and then turn left into London Wall, right into Moorgate and left into Chiswell Street. Silk Street is the fourth turning on the left.

London/City Airport – LCY

From City Airport, follow the sign for Docklands. Pass the docks and follow the River. Drive west towards Westminster. At the Tower of London, turn right into the Minories then first left into Dukes Place and follow the road onto London Wall. Turn right into Moorgate and left into Chiswell Street. Silk Street is the fourth turning on the left. Gresham Street

Shareholder Information

Proxy voting

Shareholders are requested to complete and submit their Form of Proxy, whether or not they intend to attend the AGM.

Please complete, sign and return the form as soon as possible in accordance with the instructions printed on it. The Form of Proxy should be returned to Capita Registrars as soon as possible, but in any event by no later than 10am on Monday, 21 May 2012. Alternatively, you may submit your proxy online at www.capitashareportal.com. CREST members wishing to use the CREST electronic appointment service are referred to note 6 of the Notice of AGM on page 6. Completion and return of the Form of Proxy will not prevent shareholders from attending in person and voting at the meeting should they subsequently decide to do so.

Shareholder enquiries

The Company's share register is maintained by: Capita Registrars The Registry 34 Beckenham Road Beckenham Kent BR3 4TU

Telephone (from UK): 0871 664 0300 (Calls cost 10p per minute plus network extras, lines are open 8.30am–5.30pm Mon–Fri) Telephone (from overseas): +44 20 8639 3399 Fax: +44 (0)1484 600 911

Enquiries relating to the administration of holdings of the Company's shares, such as change of address, change of ownership or dividend payments, should be directed to Capita at the address and telephone number above.

Any queries from shareholders in Peru should be addressed to:

José Augusto Palma, General Counsel Compañía Minera Ares Calle La Colonia No.180 Urb. El Vivero Santiago de Surco Lima Telephone: +511 317 2000

Dividend payments

Timetable

The Directors recommend the payment of a final dividend of US\$0.03 per Ordinary Share for the year ended 31 December 2011, to shareholders on the register as at 4 May 2012. Subject to the passing of Resolution 3, the dividend will be paid in pounds sterling on 29 May 2012 but the Board will take advantage of the authority granted to them by the Company's Articles of Association to make provision for shareholders to elect to receive their dividend in US dollars if they so wish.

Payment of dividend in US dollars

In line with the practice adopted to date, the Board has determined that the exchange rate to be applied to convert the dividend into pound sterling will be based on the average exchange rate for the five business days prior to the record date.

The exchange rate to be applied will be announced to the market as soon as practicable after that date.

If you wish to receive your dividend in US dollars, please request a Currency Election form from Capita Registrars, which should be completed and returned to Capita by 9 May 2012.

Electronic payment of dividend in pound sterling

Capita can also arrange for the dividend to be paid directly into a shareholder's UK bank account. If you wish to take advantage of this facility, a dividend mandate form, also available from Capita, should be completed and returned to Capita by 9 May 2012.

Please note that this arrangement is only available in respect of dividends paid in pound sterling.

2012 Calendar

2011 final dividend payable	29 May 2012
2012 half-year results announced	August 2012
2012 interim dividend payable expected	October 2012
Financial year end	31 December 2012

Hochschild Mining plc

Registered Office: 46 Albemarle Street London W1S 4JL United Kingdom Tel: +44 (0) 20 7907 2930 Fax: +44 (0) 20 7907 2931 info@hocplc.com

www.hochschildmining.com