Holding(s) in Company

TR-1: 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):

Barclays PLC

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

30 October 2009

(6). Date on which issuer notified:

4 November 2009

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

3% to below notifiable %

(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: 5,331,824
Number of Voting rights(viii): 5,331,824

Resulting situation after the triggering transaction(vii):
Number of shares: No reportable

Number of voting rights (ix):
Direct (x): Not reportable
Indirect (xi): Not reportable

% of voting rights:
Direct: Not reportable
Indirect: Not reportable


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:

C. Financial Instruments with similar economic effect to Qualifying Financial
Instruments

Resulting situation after the triggering transaction

Type of financial instrument:

Exercise price:

Expiration date:

Number of voting rights instrument refers to:

% of voting rights:

Total (A + B + C):

Number of voting rights: Not reportable

% of voting rights: Not reportable

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


4 November 2009