Portfolio Update

BLACKROCK WORLD MINING TRUST plc
All information is at 31 August 2013 and unaudited.

Performance at month end with net income reinvested
                                One    Three      One    Three     Five
                              Month   Months     Year    Years    Years
Net asset value (undiluted)    3.0%    -4.7%   -13.2%   -17.8%   -21.0%
Net asset value (diluted)      3.0%    -4.7%   -13.2%   -17.8%   -20.2%
Share price                    3.2%    -1.7%    -7.1%   -10.6%   -11.5%
HSBC Global Mining Index*      2.9%    -5.3%   -13.0%   -23.5%   -15.4%
*Total return

Sources: BlackRock, HSBC Global Mining Index, DataStream
 
At month end
Net asset value           Including Income            Capital Only
Undiluted/diluted:                 517.97p*                507.88p
*Includes net revenue of 10.09p

Share price:                      475.90p
Discount to NAV**:                   8.1%
Total assets:                  £1,024.90m
Net yield***:                        4.4%
Gearing:                            11.0%

Ordinary shares in issue:          177,287,242
Ordinary shares held in Treasury:   15,724,600

** Discount to NAV including Income.
*** Based on prior year final dividend of 14.00p and current year interim
dividend of 7.00p per share.

Sector                   % Total    Country Analysis          % Total
                          Assets                               Assets

Diversified                 41.3    Global                       46.7
Base Metals                 22.6    Other Africa                 21.8
Industrial Minerals         16.9    Latin America                15.2
Gold                         8.4    Australasia                   4.7
Silver & Diamonds            8.1    South Africa                  3.9
Platinum                     1.1    Democratic Republic of Congo  3.3
Other                        0.8    Canada                        1.5
Energy Minerals              0.2    Emerging Europe               1.0
Net current assets           0.6    USA                           0.9
                           -----    Indonesia                     0.4
                           100.0    Net current assets            0.6
                           -----                                -----
                                                                100.0
                                                                =====

Ten Largest Investments                      % Total
                                              Assets

Company
Rio Tinto                                       11.3
BHP Billiton                                    11.0
Glencore Xstrata                                10.3
First Quantum Minerals                           8.0
London Mining Marampa Contract                   6.9
Freeport McMoRan                                 5.7
Fresnillo                                        3.7
Cerro Verde                                      2.7
Banro                                            2.7
Iluka Resources                                  2.6

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

Performance
August saw increased volatility in equity markets as political tension in the
Middle East and North Africa escalated. The increased uncertainty took a toll
on global equities which posted negative returns for the month. On the economic
front, data from China and Europe surprised on the upside with PMIs remaining
above 50. Leading indicators from the US were slightly more mixed with weak
durable orders and a lower than expected Empire State index but strong consumer
confidence and significantly better existing home sales.

Iron ore continued to hold up better than investors expected on the back of
encouraging Chinese macroeconomic data. Chinese inventories of both iron ore
and steel remain low while we continue to see robust demand from construction
and infrastructure. The weakness in the Australian dollar also seems to be now
factored into the iron ore price. The bulk commodity added 3.7%, ending the
month at around $139/t (source: CSLA, 63.5% Fe). Base metals also performed
well on the back of better than expected Chinese leading indicators. Copper,
zinc, tin and lead returned 3.0%, 3.6%, 4.1% and 4.3% respectively.

Precious metals had positive returns in August. Gold climbed higher on the
support of physical demand, the stabilisation of ETF flows and tensions in the
Middle East prompting some 'safe haven' interest. Silver rebounded heavily,
benefiting from the positive industrial activity data as industrial demand is
also a significant driver of the silver price. Gold and silver returned 6.7%
and 18.6% respectively over the month.

Strategy/Outlook
The mining sector and other economically sensitive areas have struggled over
the last two years as the market has downgraded global growth expectations.

In the medium term, commodity prices are likely to remain range-bound as supply
and demand have come closer into balance. We expect constructive price pressure
to return for certain commodities, but for now mining companies need to be
focused on capital discipline, operational efficiency and growing margins
through cost control. In such an environment, well-managed mining businesses
should be able to generate free cash flow, be in a strong position to return
cash to shareholders and should see their share prices rewarded as a result. In
the Company, we are looking to identify the winners and the stock specific
stories that have been neglected in the risk averse markets of the last two
years.

All data in USD terms unless otherwise stated.

16 September 2013

ENDS

Latest information is available by typing www.brwmplc.co.uk on the internet,
"BLRKINDEX" on Reuters, "BLRK" on Bloomberg or "8800" on Topic 3 (ICV
terminal).  Neither the contents of the Manager's website nor the contents of
any website accessible from hyperlinks on the Manager's website (or any other
website) is incorporated into, or forms part of, this announcement.