Portfolio Update

BLACKROCK WORLD MINING TRUST plc
All information is at 31 May 2008 and unaudited.

Performance at month end with net income reinvested

                                 One    Three      One     Three      Five
                               Month   Months     Year     Years     Years
Net asset value* (undiluted)    5.9%     4.1%    36.7%    269.2%    553.2%
Net asset value* (diluted)      5.7%    10.1%    40.4%    258.0%    526.6%
Share price*                    4.4%     9.5%    30.6%    258.9%    554.1%
HSBC Global Mining Index        5.4%     5.3%    40.9%    232.7%    436.5%

Sources: BlackRock, HSBC Global Mining Index, Datastream

*Net asset value and share price performance includes the warrant reinvestment,
assuming the 2004 and 2006 bonus warrant entitlement per share was sold and the
proceeds reinvested on the first day of trading.

At month end
Net asset value         Including Income           Capital only
Undiluted:                       893.98p*               889.23p
Diluted:                         878.27p                873.76p
*Includes net revenue of 4.75p

Share price:                     745.00p
Discount to NAV**:                14.74%
Warrant price:                   204.50p
Total assets:                 £1,595.90m***
Net yield:                         0.40%
Gearing:                           0.00%

Ordinary shares in issue (excluding treasury shares): 178,517,729
Warrants in issue:                                      8,947,605
Ordinary shares held in Treasury:                      14,492,800

** Discount to NAV based on capital only, fully diluted NAV.
*** Total assets include current year revenue.

Sector                 % Total    Country Analysis      % Total
                        Assets                           Assets

Diversified               47.8    Latin America            25.4
Base Metals               20.7    Global                   17.8
Industrial Minerals        9.7    South Africa             12.4
Platinum                   8.1    Canada                    7.7
Silver/Diamonds            6.9    USA                       7.5
Gold                       4.0    Australasia               7.2
Other                      3.0    Indonesia                 4.9
Net current liabilities   (0.2)   Other Africa              4.3
                         -----    India                     4.3
                         100.0    Europe                    4.1
                         =====    Emerging Europe           3.7
                                  Laos                      0.7
                                  Other                     0.2
                                  Net current liabilities  (0.2)
                                                          -----
                                                          100.0
                                                          =====

Ten Largest Equity Investments

Company                  Region of Risk
Alcoa                    USA
BHP Billiton             Global
Bumi Resources           Indonesia
Eramet                   France
Impala Platinum          South Africa
Industrias Penoles       Latin America
Minas Buenaventura       Latin America
Rio Tinto                Global
Teck Cominco             Canada
Vale                     Latin America

Commenting on the markets, Graham Birch, representing the Investment Manager
noted:

Market review
Although base metals traded higher in the opening periods of the month, they
retreated in the second half of the month on a stronger US dollar and market
fears over weaker than expected demand. Sadly, a severe earthquake struck China
during the month, causing massive loss of life. The earthquake also knocked out
some commodity production, notably zinc smelting, providing some support to
prices. With the oil price peaking above US$130 during the month, input costs
are coming under pressure throughout the mining sector and we may need to see
some price movements to offset this rise.

Strategy/Outlook
The market is beginning to recognise that economic weakness in the US does not
necessarily mean bad news for commodity prices. We are also beginning to see
mining equities start to reflect some of the continued strength in the
underlying commodities which may drive strong earnings for the sector. 2008 may
prove to be a year of record earnings for the mining sector. Whilst US weakness
may be moderating slightly, we do not think that the bad news is over and we
may see volatility continue in the shorter term. Over the medium term we
believe that demand for metals and minerals will not be severely derailed by US
economic weakness and we therefore are bullish on the outlook for mining
equities.

Latest information is available by typing www.blackrock.co.uk/its on the
internet, "BLRKINDEX" on Reuters, "BLRK" on Bloomberg or "8800" on Topic 3 (ICV
terminal).

19 June 2008