Net Asset Value(s)

NET ASSET VALUE

MERRILL LYNCH WORLD MINING TRUST PLC

The unaudited net asset value for Merrill Lynch World Mining Trust plc at close
of business on 4 March 2008 was:

863.55p Capital only (undiluted)

865.52p Including current year income (undiluted) - XD

806.40p Capital only (diluted for warrants)

808.05p Including current year income (diluted for warrants) - XD

Notes:

1. Investments have been valued on a bid price basis.

2. Revenue items included in net asset value, with dividends payable deducted
on the ex-dividend date.

3. The Merrill Lynch World Mining Trust plc diluted NAV has been calculated
based on 29,814,855 warrants in issue.

4. 200,000 ordinary shares were purchased on 20 December 2007, bringing the
total amount of ordinary shares held in treasury to 14,442,800.

5. For the latest daily net asset value, previous month end performance
statistics, asset allocation and ten largest holdings of the BlackRock managed
Investment Trusts, see BLRKINDEX on Reuters or page 8800 on ICB (Topic 3).

6. New shares arising from warrants exercised on 29 February 2008 will be
allotted on 5 March 2008 and will commence trading on 14 March 2008. Until
trading the new shares will not be included in the NAV.

Accordingly, until 14 March 2008, the diluted NAV includes 20,867,250 warrants
at 478p (exercise price on 29 February 2008) and 8,947,605 warrants which
remain unexercised until 27 February 2009 at a subscription price of 565p per
warrant.