Annual Information Update

BLACKROCK WORLD MINING TRUST plc

ANNUAL INFORMATION UPDATE

Annual Information Update for the 12 months from 1 March 2011 up to and
including 1 March 2012.

Pursuant to the requirements of Prospectus Rule 5.2 the following summarises
the information that has been published or made available to the public by the
Company. Please note that some of this information may be out of date.

 1. Announcements via a Regulatory Information Service (RIS):
   
    (RIS Announcements can be viewed at or downloaded via the internet
    from http://dev.investegate.co.uk using EPIC code BRWM)           

1.1 Net Asset Values:

    As far as possible the Company has announced daily the net asset  
    value per share as at the close of the previous business day.     

1.2 Holdings in Company:

    01 March 2012                                                     
    29 February 2012                                                  
    23 February 2012                                                  
    01 February 2012                                                  
    03 January 2012                                                   
    15 December 2011                                                  
    01 December 2011                                                  
    01 November 2011                                                  
    03 October 2011 x2                                                
    01 September 2011                                                 
    01 August 2011                                                    
    20 July 2011                                                      
    04 July 2011                                                      
    01 June 2011                                                      
    03 May 2011                                                       
    01 April 2011                                                     
    01 March 2011                                                     

1.3 Transactions in own shares:

    09 September 2011                                                 
    05 August 2011                                                    

1.4 Portfolio Updates:

    15 February 2012                                                  
    19 January 2012                                                   
    04 January 2012                                                   
    14 December 2011                                                  
    15 November 2011                                                  
    17 October 2011                                                   
    03 October 2011                                                   
    19 September 2011                                                 
    16 August 2011                                                    
    20 July 2011                                                      
    05 July 2011                                                      
    20 June 2011                                                      
    18 May 2011                                                       
    18 April 2011                                                     
    05 April 2011                                                     
    17 March 2011                                                     

1.5 Other Announcements:

    1 March 2012         Total Voting Rights                          
    23 February 2012     Final Results                                
    01 February 2012     Total Voting Rights                          
    03 January 2012      Total Voting Rights                          
    01 December 2011     Total Voting Rights                          
    09 November 2011     Interim Management Statement                 
    01 November 2011     Total Voting Rights                          
    03 October 2011      Total Voting Rights                          
    12 September 2011    Total Voting Rights                          
    01 September 2011    Total Voting Rights                          
    23 August 2011       Submission of Document                       
    10 August 2011       Half Yearly Report                           
    08 August 2011       Director Declaration                         
    05 August 2011       Total Voting Rights                          
    01 August 2011       Total Voting Rights                          
    01 July 2011         Compliance with Model Code                   
    01 July 2011         Total Voting Rights                          
    03 June 2011         Doc re June 2011 Newsletter                  
    01 June 2011         Total Voting Rights                          
    09 May 2011          Statement re Corporate Broker                
    04 May 2011          Interim Management Statement                 
    04 May 2011          Result of Annual General Meeting             
    03 May 2011          Total Voting Rights                          
    01 April 2011        Total Voting Rights                          
    07 March 2011        Submission of Documents                      
    04 March 2011        Annual Information Update                    
    01 March 2011        Total Voting Rights                          

2. Documents Filed with the Registrar of Companies:

    24 October 2011      Form AR01 Annual Return                      
    05 October 2011      Form SH03                                    
    08 September 2011    Form CH04                                    
    23 August 2011       Form SH03                                    
    05 August 2011       Form AD01                                    
    27 May 2011          Form CH01                                    
    11 May 2011          Full Accounts made up to 31 December 2010    
    09 May 2011          AGM Special Resolutions                      

3. Printed Publications:

    The Annual Report and Accounts for the year ended 31 December 2011 will be 
    available from the Company's registered office, c/o The Company Secretary, 
    BlackRock World Mining Trust plc, 12 Throgmorton Avenue, London EC2N 2DL or
    can be downloaded from www.blackrock.co.uk/BRWM                            

Other sources of information:

The Company's Ordinary shares are listed on the London Stock Exchange and the
price of these shares is published in the Financial Times and the Times under
"Investment Companies" and in the Daily Telegraph under "Investment Trusts".
The share price is also available on BlackRock's website at 
www.blackrock.co.uk/BRWM

Further information can be obtained from BlackRock Investment Management (UK)
Limited as follows:

    Free investor helpline: 0800 445522                               
    Email address: www.blackrock.co.uk/its                            

In addition, regular factsheets on the Company are produced by BlackRock
Investment Management (UK) Limited and can be downloaded from
www.blackrock.co.uk/BRWM

BlackRock Investment Management (UK) Limited
Secretary
6 March 2012


ENDS


Neither the contents of the Manager's website nor the contents of any website
accessible from hyperlinks on the Manager's website (or any other website) is
incorporated into, or forms part of, this announcement.