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 18 February 2008 was:

817.40p Capital only (undiluted)

823.62p Including current year income (undiluted)

763.43p Capital only (diluted for warrants)

768.67p Including current year income (diluted for warrants)

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).