Holding(s) in Company

NOTIFICATION OF MAJOR INTERESTS IN SHARES (as at 31 December 2010)

(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 acquisition or disposal of instruments with similar economic effect to
qualifying financial instruments: ()

An event changing the breakdown of voting rights: ( )

Other (please specify) : ( )

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

BlackRock Investment Management (UK) Limited

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

Nutraco Nominees Limited

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

Not notified

(6). Date on which issuer notified:

Not notified

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

Not notified

(8). Notified details:

A: Voting rights attached to shares (viii) (xi)

Class/type of shares (if possible using the ISIN code): ORD / GBP 0.05p /
GB0005774855

Situation previous to the triggering transaction(vi):
Number of Shares: 2,082,932
Number of Voting rights(viii): 2,082,932

Resulting situation after the triggering transaction(vii):
Number of shares:
Direct: N/A
Number of voting rights (ix):
Direct (x):
Indirect (xi): 2,091,510

% of voting rights:
Direct:
Indirect: 1.17%

B. Qualifying Financial Instruments

Resulting situation after the triggering transaction (xii):

Type of financial instrument: N/A

Expiration date (xiii): N/A

Exercise/Conversion Period/Date (xiv): N/A

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

% of voting rights: N/A

C. Financial Instruments with similar economic effect to Qualifying Financial
Instruments (xv, xvi)

Resulting situation after the triggering transaction: N/A

Type of financial instrument: N/A

Exercise price: N/A

Expiration date (xvii): N/A

Exercise/Conversion Period (xviii): N/A

Number of voting rights instrument refers to:

% of voting rights (xix, xx):
Nominal:
Delta:

Total (A + B + C):

Number of voting rights: 2,091,510

% of voting rights: 1.17%

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

Proxy Voting

(10). Name of the proxy holder:

Nutraco Nominees Limited

(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:

These shares are held on behalf of participants in the BlackRock Investment
Trust savings products. BlackRock Investment Management (UK) Limited has a notifiable
interest in these shares because, in certain circumstances and subject to certain limitations
agreed with the Takeover Panel to ensure compliance with the Takeover Code, with effect
from 14 March 2007 BlackRock is entitled to exercise the voting rights attached to
these shares if the relevant plan participants do not do so.

(14). Contact name:

C Driscoll
For BlackRock Investment Management (UK) Limited
Secretary

(15). Contact telephone number:

020 7743 2427


5 January 2011