BLACKROCK WORLD MINING TRUST PLC: 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 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) : ( ) 
(3). Full name of person(s) subject to the notification obligation (iii): 
Lazard Asset Management LLC 
(4). Full name of shareholder(s) (if different from 3.) (iv): 
Bank of New York, Inc- Dir Personal
Bank of New York - Global Custody
CIBC-Mellon Canadian office
Comerica Bank
Mellon Trust
Morgan Guaranty - Personal Custody
Morgan Stanley Prime Brokerage
Northern Trust Co
State Street Bank & Trust Company
State Street Bank - Custodian - ETC
State Street Bank - Master Tr - ETC
State Street Bank - Custody Master Trust 
(5). Date of the transaction and date on which the threshold is crossed or
reached (v): 
7 January 2013 
(6). Date on which issuer notified: 
9 January 2013 
(7). Threshold(s) that is/are crossed or reached (vi, vii): 
Increase from 5% to 6% 
(8). Notified details: 
A: Voting rights attached to shares (viii, ix): 
Class/type of shares (if possible using the ISIN code): GB0005774855 
Situation previous to the triggering transaction:
Number of Shares:
Number of Voting rights: 10,599,676 
Resulting situation after the triggering transaction:
Number of shares (Direct): 
Number of voting rights:
Direct (xi):
Indirect (xii): 10,647,953 
% of voting rights (x):
Direct:
Indirect: 6.006% 
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: 10,647,953 
Percentage of voting rights: 6.006% 
(9). Chain of controlled undertakings through which the voting rights and/or
the financial instruments are effectively held, if applicable (xxi): 
Lazard Asset Management LLC controls all the voting rights held of this issuer. 
Proxy Voting: 
(10). Name of the proxy holder: N/A 
(11). Number of voting rights proxy holder will cease to hold: 
(12). Date on which proxy holder will cease to hold voting rights: 
(13). Additional information: 
(14). Contact name: 
Ms C Driscoll
For BlackRock Investment Management (UK) Limited
Secretary 
(15). Contact telephone number: 
020 7743 2427 
9 January 2013 
END 
-0- Jan/09/2013 14:23 GMT
 
 
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