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: ( )

An acquisition or disposal of qualifying 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) : (X)  CHANGE IN INVESTEC'S TERMS AND CONDITIONS
RESTRICTING THE EXERCISE OF VOTING RIGHTS TO DISCRETIONARY CLIENT HOLDINGS

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

            Investec Wealth & Investment Limited

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

            N/A

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

            1 June 2015

(6). Date on which issuer notified:

            2 June 2015

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

            4%

(8). Notified details:

A: Voting rights attached to shares (viii, ix):

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

Situation previous to the triggering transaction:
     Number of Shares:  10,003,457
     Number of Voting rights:  10,003,457

Resulting situation after the triggering transaction:
     Number of shares (Direct):  8,675,688

     Number of voting rights:
          Direct (xi):  8,675,688
          Indirect (xii):

% of voting rights (x):
     Direct:  4.89%
     Indirect: 

B. Qualifying Financial Instruments

Resulting situation after the triggering transaction:

Type of financial instrument:  

Expiration date (xiii): 

Exercise/Conversion Period (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 (xv, xvi)

Resulting situation after the triggering transaction

Type of financial instrument: 

Exercise price: 

Expiration date (xvii): 

Exercise/Conversion period (xviii): 

Number of voting rights instrument refers to: 

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

Total (A + B + C):

Number of voting rights:  8,675,688

Percentage of voting rights:  4.89%

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

            Discretionary client holdings registered in the name of Nominee
companies 100% owned by Investec Wealth & Investment Limited.

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:

            N/A

(14). Contact name:

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


(15). Contact telephone number:

            020 7743 2427

2 June 2015