Holding(s) in Company

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):

BlackRock World Mining Trust plc

(2). Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights: (X)

An acquisition or disposal of financial instruments which may result in the
acquisition of shares already issued to which voting rights are attached: ( )

An event changing the breakdown of voting rights: ( )

Other (please specify) : ( )

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

Credit Suisse Securities (Europe) Limited

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

Credit Suisse International

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

27 January 2009

(6). Date on which issuer notified:

29 January 2009

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

3%

(8). Notified details:


A: Voting rights attached to shares

Class/type of shares (if possible using the ISIN code): GB0005774855

Situation previous to the triggering transaction(vi):
Number of Shares: N/A
Number of Voting rights(viii): N/A

Resulting situation after the triggering transaction(vii):
Number of shares: 7,010,833

Number of voting rights (ix):
Direct (x): 7,010,833
Indirect (xi): N/A

% of voting rights:
Direct: 3.93%
Indirect: N/A


B. Financial Instruments

Resulting situation after the triggering transaction (xii):

Type of financial instrument:

Expiration date (xiii):

Exercise/Conversion Period/Date (xiv):

Number of voting rights that may be acquired if the instrument is exercised/
converted:

% of voting rights:

Total (A + B):

Number of voting rights: 7,010,833

% of voting rights: 3.93%


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

Credit Suisse Securities (Europe) Limited and Credit Suisse International are
part of the Investment Banking division of Credit Suisse ("CSIBD"), which is
part of the Credit Suisse Group ("CSG"). CSIBD is a segregated business unit
within CSG with an independent management structure and exercises its voting
rights independently from other divisions of CSG.

Proxy Voting:

(10). Name of the 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:



(14). Contact name:

Ms C Driscoll
For BlackRock Investment Management (UK) Limited
Secretary

(15). Contact telephone number:

020 7743 2427


29 January 2009