Portfolio Update

BLACKROCK WORLD MINING TRUST plc
All information is at 30 September 2009 and unaudited.

Performance at month end with net income reinvested
                                    One     Three       One     Three      Five
                                  Month    Months      Year     Years     Years
Net asset value* (undiluted)      11.0%     32.7%     17.0%     34.8%    159.7%          
Net asset value* (diluted)        11.0%     32.7%     17.0%     35.2%    159.8%          
Share price*                      11.9%     28.8%     21.0%     31.5%    155.7%          
HSBC Global Mining Index          11.4%     27.2%     33.0%     59.0%    176.2%          

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:                               580.84p#               576.59p
# Includes net revenue of 4.25p                                                
                                                                               
Share price:                                     495.00p                       
Discount to NAV**:                                 14.2%                       
Total assets***:                              £1,032.51m                       
Net yield:                                         1.11%                       
Gearing:                                             Nil                       

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

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

                                                                               
Sector                           % Total Country Analysis               % Total
                                  Assets                                 Assets
                                                                               
Diversified                        43.3  Latin America                    30.5 
Base Metals                        19.9  Global                           18.4 
Gold                               13.9  Australasia                      10.4 
Industrial Minerals                 7.0  South Africa                      9.6 
Platinum                            6.9  Other Africa                      7.4 
Silver/Diamonds                     6.9  Canada                            6.9 
Other                               1.0  Indonesia                         5.7 
Net current assets                  1.1  USA                               4.0 
                                         India                             3.6 
                                         Emerging Asia                     1.3 
                                         Europe                            1.1 
                                         Net current assets                1.1 
                                  -----                                  ----- 
                                  100.0                                  100.0 
                                  =====                                  ===== 
                                                                               
Ten Largest Equity Investments (in alphabetical order)                          
                                                                               
Company                                                                     
BHP Billiton                                                                   
First Quantum Minerals                                                         
Freeport McMoRan                                                               
Fresnillo                                                                      
Impala Platinum                                                                
Minas Buenaventura                                                             
Newcrest Mining                                                                
Rio Tinto                                                                      
Teck Resources                                                                 
Vale                                                                           

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

Performance
September was a strong period for the mining sector with the first half of the
month seeing strong gains spurred on by increased investor appetite for risk
and optimism about the global recovery. Momentum slowed after US housing data
disappointed and investors worried about financial regulation ahead of the G20
summit.

Looking to the commodities, base metals were generally weaker over the course
of the month (LME copper - 5.5%, LME aluminium -1.6%) whereas precious metals
were generally stronger (gold +5.7%, platinum +3.5%). The moderation of imports
into China, following a period of re-stocking of inventories, was the prime
driver of base metals whereas precious metals continue to be influenced by
moves in the US Dollar and inflation concerns.

In equity news, ENRC, a Kazakh mining group, agreed to buy CAMEC, a central
African mining group, for around $955 million. The takeover will immediately
add copper production to the portfolio of ENRC, whose main products are
currently iron ore and ferrochrome (they are one of the world's largest
producers of ferrochrome). This move was significant for two reasons; firstly,
it indicates ENRC's willingness to diversify outside of Kazakhstan and
secondly, that major companies are beginning to become more comfortable with
the geopolitical risk associated with investing in countries such as the
Democratic Republic of Congo (DRC), where CAMEC have significant assets.

Strategy/Outlook
The mining sector is facing a significantly better outlook than it was at the
start of 2009. Commodity prices have rallied as the financial crisis has eased
and although financial distress in the sector has diminished, there remain many
companies that have projects that are unlikely to be developed in the short
term, if ever. Across the industry, the appetite for taking on development risk
is quite a long way from returning and those projects that are being developed
have had their scale revised markedly lower to reduce the financial and
development risk. The shutdown of existing capacity over the last 12 months and
the cancellation and scaling back of new supply means many commodities are
constrained on the supply side. When we see demand recover, as we are possibly
already starting to see the early signs of, the supply side's recent lack of
investment should provide support for commodity prices.

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).

14 October 2009