Share Interest Notification

Hochschild Mining PLC
12 February 2007


12th February 2007
Hochschild Mining plc
Notification of Major Interests in Shares

TR - 1(i): NOTIFICATION OF MAJOR INTERESTS IN SHARES


1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached (ii):

Hochschild Mining plc



2. Reason for the notification (please state Yes/No):

An acquisition or disposal of voting rights: (No)

An acquisition or disposal of financial instruments which may result in the
acquisition of shares already issued to  which voting rights are attached: (No)

An event changing the breakdown of voting rights: (No)

Other (please specify): (Yes - Declaration of Major Shareholding as per FSA
Transitional Provision 7)


3. Full name of person(s) subject to the notification obligation (iii):

BlackRock Inc.


4. Full name of shareholder(s) (if different from 3) (iv):

Not disclosed


5. Date of the transaction and date on which the threshold is crossed or reached 
(v):

N/a


6 Date on which issuer notified:

9 February 2007


7. Threshhold(s) that is/are crossed or reached:

Above 5%


8 Notified details:

N/a


A: Voting rights attached to shares

Class/type of shares if possible                Situation previous to the
Using the ISIN Code                             Triggering transaction (vi)

                                                No of              No of
                                                Shares             voting rights (viii)

GB00B1FW5029                                    N/a                          N/a

Resulting situation after triggering the transaction (vii):

Class/type of shares No of shares            No of voting rights     % of voting rights
if possible using                            (ix)
the ISIN Code

                               Direct         Direct          Indirect     Direct      Indirect
                                                              (x)            (xi)

GB00B1FW5029                     N/a          N/a             22,633,411    N/a         7.36%


B: Financial Instruments
Resulting situation after the triggering transaction (xii)

Type of    Expiration   Exercise/       Number of voting      % of voting
Financial  date (xiii)  conversion      rights that may be    rights
Instrument              period/date     acquired if the
                        xiv)            instrument is
                                        exercised/converted


Total (A+B)

Number of voting rights                        % of voting rights
22,633,411                                     7.36%


9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively  held, if applicable (xv):

BlackRock Investment Management (UK) Ltd - 22,633,411 (7.36%)

Proxy Voting


10. Name of proxy holder:

N/a


11. Number of voting rights proxy holder will cease to hold:

N/a


12. Date on which proxy holder will cease to hold voting rights:

N/a


13. Additional information:

N/a


14. Contact name:

N/a


15. Contact telephone number:

N/a




Annex to Notification of Major Interests in Shares (xvi)

A.  Identity of the person or legal entity subject to the notification obligation

Full name (including legal form for legal entities):

BlackRock Inc.


Contact address (registered office for legal entities):

33 King William Street, London, EC4R 9AS

Phone Number:

020 7743 2098


Other useful information (at least legal representative for legal persons):

Thomas Hone


B.  Identity of notifier, if applicable (xvii):

Full name:

Christopher Stamp


Contact address:

Hochschild Mining plc, 1 Grosvenor Crescent, London, SW1X 7EF


Phone Number:

020 7152 6011


Other useful information:

N/a




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