Portfolio Update

BLACKROCK WORLD MINING TRUST plc
All information is at 28 February 2010 and unaudited.

Performance at month end with net income reinvested
                                    One     Three       One     Three      Five
                                  Month    Months      Year     Years     Years
Net asset value* (undiluted)       8.6%      3.7%    106.3%     29.0%    157.2%          
Net asset value* (diluted)         8.6%      3.7%    106.3%     32.9%    162.6%          
Share price*                       7.1%      3.4%     94.8%     27.2%    145.9%          
HSBC Global Mining Index          10.0%      3.2%     97.2%     57.7%    182.4%          

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/Diluted:                               667.78p#               663.03p
# Includes net revenue of 4.75p                                                 
                                                                               
Share price:                                     548.50p                       
Discount to NAV**:                                 17.3%                       
Total assets***:                              £1,230.40m                       
Net yield:                                          0.9%                       
Gearing:                                            3.5%                       

Ordinary shares in issue:         177,762,242                                          
Ordinary shares held in Treasury:  15,249,600                                   

** Discount to NAV based on capital only.                                      
*** Including current year revenue.                                            

                                                                               
Sector                      % Total  Country Analysis           % Total
                             Assets                              Assets
                                                                               
Diversified                    46.9   Latin America                27.0 
Base Metals                    20.1   Global                       24.4 
Gold                           12.2   Other Africa                 10.2 
Platinum                        7.0   South Africa                 10.0 
Silver and Diamonds             6.3   Australasia                   8.4 
Industrial Minerals             6.1   Canada                        6.0 
Other                           0.6   USA                           4.0 
Net current assets              0.8   India                         3.6 
                                      Indonesia                     3.3 
                                      Emerging Asia                 1.3 
                                      Europe                        1.0 
                                      Net current assets            0.8 
                              -----                               ----- 
                              100.0                               100.0 
                              =====                               ===== 

                                                                               
Ten Largest Equity Investments (in alphabetical order)                          
                                                                               
Company                                                                        
BHP Billiton                                                                   
First Quantum Minerals                                                         
Freeport McMoRan                                                               
Fresnillo                                                                      
Glencore Finance (Europe) 5% 31/12/14                                          
Impala Platinum                                                                
Minas Buenaventura                                                             
Rio Tinto                                                                      
Teck Resources                                                                 
Vale                                                                           

Commenting on the markets, Evy Hambro, representing the Investment Manager
noted:

Performance
Instability remained in global markets during February as concerns over Greek
sovereign debt continued and credit rating agencies warned of downgrades.
Indecision from the European Union over how best to address this issue caused
concern to spread to other European countries whose economies are exhibiting
signs of weakness. Towards the end of the month these fears eased as the key
economies in the European Union, notably Germany, indicated that they would
support the Greek economy if required.

The ability of natural disasters or geopolitical issues to impact markets was
highlighted at the end of February, as an earthquake struck in Chile. Four
mines, representing approximately 5% of world production were impacted by power
shutdowns, but were all back into full production by the end of week. As the
producer of 30% of the world's copper, concerns arose over the security of
copper supply causing the spot price to rise sharply. The earthquake highlights
the upside risk to copper owing to a tight supply-demand.

While commodity demand growth has largely come from China and other Asian
countries, we are starting to see more positive signs in Europe. Recent reports
on the copper LME inventories show that the number of cancelled warrants
(clients taking delivery of the metal) has doubled over the past month, with
64% of this demand coming from Europe.

During the month, the IMF announced it will commence a phased sale of 191.3
tonnes of gold in the open market. This represents the remainder of the
previously announced sale of 403 tonnes, of which 204 tonnes has already been
sold off-market to central banks, including India who purchased 200t in 2009.
Early press speculation was that this would be taken by China. The IMF
reassured the market that the sales will be carried out in a controlled fashion
in order to avoid any disruptions to the gold price.

Spot prices for bulk commodities, particularly iron ore and coking coal, remain
well above 2009 benchmark settlements with Australian iron ore spot prices now
at a 103.2% premium to last year's benchmark. Heavy rains and infrastructure
constraints in Australia helped to tighten the Pacific Basin coal market and at
one point 51 ships were queuing to load coal at the port of Newcastle in
Australia. In addition, positive rhetoric from the major iron ore and coking
coal producers, post their financial results, over iron ore and coking coal
price settlements further helped to buoy market expectations for benchmark
pricing in 2010.

Strategy/Outlook
In recent weeks investor concerns have moved from corporate debt to sovereign
debt with the issues emerging over the stability of Greece and Portugal, and
the possibility of downgrades by credit rating agencies. While these recent
concerns have abated somewhat, investors remain wary of markets and volatility
endures.

In addition, China's steps to manage their growth through a tightening of their
monetary policy added to uncertainty over the sustainability of commodities
demand. However China's action is positive in the medium to long term as it
seeks to reduce the risk of the economy overheating.

We remain positive on the medium to long term outlook as robust growth in
emerging market countries continues and a tightening remains in supply side
dynamics. While we believe short term volatility in the sector is likely, stock
selection and commodity selection will be key in order to take advantage of
opportunities in these markets.

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).

16 March 2010