BLACKROCK WORLD MINING TRUST plc

ANNUAL INFORMATION UPDATE

Annual Information Update for the period from 1 March 2009 up to and including
28 February 2010.

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 Please note that some of this information may be out of date.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:

19 February 2010
02 February 2010
04 January 2010
03 December 2009
04 November 2009
03 November 2009
02 October 2009
02 September 2009
03 August 2009
01 July 2009
01 June 2009
01 May 2009
06 April 2009
01 April 2009
16 March 2009
02 March 2009

1.3 Transactions in own shares:

NONE

1.4 Portfolio Updates:

26 February 2010 (x2)
18 January 2010
11 January 2010
14 December 2009
12 November 2009
14 October 2009
06 October 2009
21 September 2009
17 August 2009
16 July 2009
24 June 2009
14 May 2009
22 April 2009
23 March 2009

1.5 Other Announcements:

19 February 2010 Final Results
15 January 2010 Statement re Portfolio Manager
04 January 2010 Compliance with Model Code
29 October 2009 Interim Management Statement
26 August 2009 Submission of Document
14 August 2009 Half Yearly Report
01 July 2009 Compliance with Model Code
23 April 2009 Interim Management Statement
23 April 2009 Result of Annual General Meeting
31 March 2009 Total Voting Rights
16 March 2009 Expiry of Warrants
03 March 2009 Cancellation of Warrant Listing
02 March 2009 Exercise of Warrants
02 March 2009 Annual Information Update

2. Documents Filed with the Registrar of Companies:

02 November 2009 Form AR01 Annual Return
06 October 2009 Form AD03
06 October 2009 Form AD02
30 April 2009 Full Accounts made up to 31 December 2008
29 April 2009 AGM Special Resolutions & Articles of
Association
10 March 2009 Form 88(2) (1,313 shares)

3. Printed Publications:

The Annual Report and Accounts for the year ended 31 December 2009
and the Half Yearly Financial Report for the six months ended 30
June 2009 are available from the Company’s registered office, c/o
The Company Secretary, BlackRock World Mining Trust plc, 33
King William Street, London EC4R 9AS or can be downloaded from
www.blackrock.co.uk/its.

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/its.

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/its.

BlackRock Investment Management (UK) Limited
Secretary

3 March 2010