Portfolio Update

BLACKROCK WORLD MINING TRUST plc
All information is at 30 September 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)    13.1%     21.2%   32.4%     0.6%    125.7%          
Net asset value* (diluted)      13.1%     21.3%   32.4%     7.2%    122.8%          
Share price*                     8.6%     13.9%   27.4%    -0.5%    111.6%          
HSBC Global Mining Index        10.9%     16.1%   27.6%    20.1%    147.6%          

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:                           763.96p #           757.47p
# Includes net revenue of 6.49p                                                
                                                                               
Share price:                                 625.50p                       
Discount to NAV**:                             17.4%                       
Total assets:                             £1,381.07m                       
Net yield:                                      0.8%                       
Gearing:                                        1.8%                       

Ordinary shares in issue: 177,537,242                                          
Ordinary shares held in Treasury: 15,474,600                                   

** Discount to NAV based on capital only.                                      

                                                                               
Sector                    % Total  Country Analysis         % Total
                           Assets                            Assets
                                                                               
Diversified                  43.0   Latin America              28.6 
Base Metals                  21.2   Global                     24.5 
Gold                         13.0   Australasia                11.7 
Industrial Minerals           7.7   Other Africa                9.7 
Silver & Diamonds             7.5   South Africa                9.0 
Platinum                      6.4   Canada                      5.6 
Other                         0.5   Indonesia                   3.2 
Net current assets            0.7   USA                         2.6 
                                    India                       2.2 
                                    Emerging Europe             1.3 
                                    Europe                      0.9 
                                    Net current assets          0.7 
                            -----                             ----- 
                            100.0                             100.0 
                            =====                             ===== 

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


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

Performance
Commodity prices rallied over the month with base metals and precious metals
reporting significant gains. Among the base metals, copper, aluminium and
nickel were some of the best performers gaining 8%, 14% and 13% respectively.
These were predominantly driven by improved demand fundamentals as better than
expected industrial data was announced in the US and China.

Gold and silver also performed well hitting new all time highs over the month.
Gold rose 4.5% in September reaching US$1,310/oz towards the end of the month
(although it did reach higher points on intra-day trades). This strengthening
occurred in the wake of announcements from the US suggesting a further wave of
quantitative easing, which in turn led to a weakening of the US dollar.
Improving risk appetite and a rising gold price contributed to silver reaching
a 30 year high of US$22.10/oz, a monthly rise of 17%.

The profitability of mining companies has increased significantly in 2010 as
higher commodity prices have contributed to stronger company balance sheets. As
a result of this increased cash flow, M&A activity has returned to the mining
sector with force. So far in 2010, US$104bn worth of deals have been announced;
we expect this to continue into the fourth quarter as the post-credit crisis
financing environment improves further.

ENRC, the diversified mining company with assets in Kazakhstan, Brazil, and
Africa, was not a participant in the general equity market rally during
September. This was due to concern over their allocation of capital to disputed
assets situated in the Democratic Republic of Congo, where political risk
remains an issue.

Strategy/Outlook
The medium to long term outlook for the mining sector still appears robust.
Emerging markets forecasts continue to exhibit strong growth and supply remains
constrained in its ability to meet the increase in demand.

As concerns over a double dip recession ease and commodity prices remain
robust, our outlook for the market is positive. The sector continues to trade
on historically low valuations, suggesting current levels could represent an
attractive entry point to the market for investors. At these levels, we would
not be surprised to see further M&A activity within the mining sector.

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).

15 October 2010