TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES(1). Identity of the issuer or the underlying issuer of existing shares towhich 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 resultin the acquisition of shares already issued to which voting rights areattached: ( )An acquisition or disposal of instruments with similar economic effect toqualifying 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):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 orreached (v):26 March 2015(6). Date on which issuer notified:27 March 2015(7). Threshold(s) that is/are crossed or reached (vi, vii):From 6% to 5%(8). Notified details:A: Voting rights attached to shares (viii, ix):Class/type of shares (if possible using the ISIN code): Ordinary SharesGB0005774855Situation previous to the triggering transaction:Number of Shares: 10,678,573Number of Voting rights: 10,678,573Resulting situation after the triggering transaction:Number of shares (Direct):Number of voting rights:Direct (xi):Indirect (xii): 10,618,652% of voting rights (x):Direct:Indirect: 5.99%B. Qualifying Financial InstrumentsResulting 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 FinancialInstruments (xv, xvi)Resulting situation after the triggering transactionType 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: 10,618,652Percentage of voting rights: 5.99%(9). Chain of controlled undertakings through which the voting rights and/orthe financial instruments are effectively held, if applicable (xxi):Client holdings registered in the name of Nominee companies 100% owned byInvestec 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:Mrs K HigginsFor BlackRock Investment Management (UK) LimitedSecretary(15). Contact telephone number:020 7743 1089

27 March 2015