Annual Information Update

BLACKROCK WORLD MINING TRUST plc

ANNUAL INFORMATION UPDATE

Annual Information Update for the period from 1 March 2008 up to and including
28 February 2009.

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 Please note that some of this information may be out of date.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.uk-wire.com 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:

    03 February 2009                                                  
    29 January 2009                                                   
    19 January 2009                                                   
    05 January 2009                                                   
    01 December 2008                                                  
    03 November 2008                                                  
    02 October 2008                                                   
    01 October 2008                                                   
    01 September 2008                                                 
    12 August 2008                                                    
    07 August 2008                                                    
    04 August 2008 (x2)                                               
    28 July 2008                                                      
    01 July 2008                                                      
    06 June 2008                                                      
    02 June 2008                                                      
    19 May 2008                                                       
    01 May 2008                                                       
    01 April 2008                                                     
    19 March 2008                                                     
    18 March 2008                                                     
    11 March 2008 (x3)                                                
    07 March 2008 (x2)                                               
    03 March 2008 (x2)                                               

1.3 Transactions in own shares:

    03 February 2009                                                  
    28 January 2009                                                   
    27 January 2009                                                   
    19 August 2008                                                    
    04 April 2008                                                     

1.4 Portfolio Updates:

    24 February 2009                                                  
    26 January 2009                                                   
    16 December 2008                                                  
    25 November 2008                                                  
    15 October 2008                                                   
    29 September 2008                                                 
    20 August 2008                                                    
    24 July 2008                                                      
    03 July 2008                                                      
    19 June 2008                                                      
    19 May 2008                                                       
    02 May 2008                                                       
    09 April 2008                                                     
    02 April 2008                                                     
    28 March 2008                                                     
    04 March 2008                                                     

1.5 Other Announcements:

    26 February 2009     Total Voting Rights                          
    23 February 2009     Submission of Documents                      
    12 February 2009     Final Results                                
    30 January 2009      Total Voting Rights                          
    26 January 2009      Submission of Documents                      
    05 January 2009      Compliance with Model Code                   
    17 November 2008     Statement re Corporate Broker                
    31 October 2008      Interim Management Statement                 
    29 August 2008       Total Voting Rights                          
    22 August 2008       Submission of Document                       
    14 August 2008       Half Yearly Report                           
    01 July 2008         Compliance with Model Code                   
    28 April 2008        Change of Name                               
    23 April 2008        Result of General Meeting                    
    10 April 2008        Interim Management Statement                 
    10 April 2008        Result of AGM                                
    07 April 2008        Total Voting Rights                          
    26 March 2008        Submission of Document                       
    06 March 2008        Total Voting Rights                          
    05 March 2008        Director/PDMR Shareholding (x4)             
    04 March 2008        Exercise of Warrants                         
    03 March 2008        Annual Information Update                    

2. Documents Filed with the Registrar of Companies:

    20 February 2009     Form 169(1B) (166,000 shares)                
    10 February 2009     Form 169(1B) (220,000 shares)                
    08 February 2009     Form 169(1B) (170,800 shares)                
    22 October 2008      Form 363a Annual Return                      
    06 October 2008      Form 353 Location of Register of Members     
    03 September 2008    Form 169(1B) (200,000 shares)                
    25 April 2008        Company Name Changed                         
    22 April 2008        Form 169(1B) (50,000 shares)                 
    15 April 2008        Full Accounts made up to 31 December 2007    
    15 April 2008        AGM Special Resolutions                      
    10 March 2008        Form 88(2) (20,867,250 shares)               

3. Printed Publications:

    The Annual Report and Accounts for the year ended 31 December 2008
    and the Half Yearly Financial Report for the six months ended 30  
    June 2008 are available from the Company's registered office, c/o of
    The Company Secretary, BlackRock World Mining Trust plc, 33 King  
    William Street, London EC4R 9AS or can be downloaded from         
    www.blackrock.co.uk                                               

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

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

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

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

BlackRock Investment Management (UK) Limited
Secretary

2 March 2009