Correction : Portfolio Update

This announcement has been revised as the gearing figure in the original
release was incorrect.

BLACKROCK WORLD MINING TRUST plc
All information is at 31 July 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)    6.7%    -7.2%   -17.6%   -20.4%   -25.6%
Net asset value (diluted)      6.7%    -7.2%   -17.6%   -20.4%   -24.8%
Share price                    9.7%    -6.0%   -13.1%   -11.7%   -16.4%
HSBC Global Mining Index*      6.8%    -8.5%   -15.0%   -25.1%   -19.6%
*Total return
 
Sources: BlackRock, HSBC Global Mining Index, DataStream

At month end
Net asset value           Including Income            Capital Only
Undiluted/diluted:                 509.40p*                495.36p
*Includes net revenue of 14.04p

Share price:                       468.00p
Discount to NAV**:                    8.1%
Total assets:                   £1,023.03m
Net yield***:                         4.5%
Gearing:                             9.96%

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

** Discount to NAV including Income.
*** Based on final dividend of 14.00p and an interim dividend of 7.00p per
share in respect of the year ended 31 December 2012.

Sector                   % Total    Country Analysis          % Total
                          Assets                               Assets

Diversified                 39.6    Global                       44.8
Base Metals                 22.3    Other Africa                 21.9
Industrial Minerals         17.4    Latin America                14.7
Gold                         8.1    Australasia                   4.8
Silver & Diamonds            7.4    South Africa                  3.9
Platinum                     1.2    Democratic Republic of Congo  3.2
Energy Minerals              0.3    Canada                        1.6
Other                        0.9    USA                           1.0
Net current assets           2.8    Emerging Europe               0.9
                           -----    Indonesia                     0.3
                           100.0    Mongolia                      0.1
                           =====    Net current assets            2.8
                                                                -----
                                                                100.0
                                                                =====

Ten Largest Investments                      % Total
                                              Assets

Company
Rio Tinto                                       11.5
BHP Billiton                                    11.0
Glencore Xstrata                                 9.4
First Quantum Minerals                           8.1
London Mining Marampa Contract                   7.1
Freeport McMoRan                                 5.5
Fresnillo                                        2.9
Iluka Resources                                  2.9
Antofagasta                                      2.9
Industrias Penoles                               2.7
 
Commenting on the markets, Evy Hambro, representing the Investment Manager 
noted:

Performance
After a volatile month of June, July was more muted and saw equity markets
perform well, driven by European equities. At a macro level it was an
encouraging period. European data surprised on the upside with PMIs coming in
above 50, US indicators continued to gradually recover and Chinese data showed
some improvement, interrupting its previous downward trend.

Following a torrid second quarter, gold bullion recovered in July, partly on
the belief that the US Federal Reserve will maintain its current monetary
policy for longer than earlier comments from Ben Bernanke initially suggested.
The gold price added 7.8%, ending the month at $1,310/oz. Holdings in gold ETFs
however continued to decline and the positioning in the gold futures market,
while marginally improving over the month, remains near a 10 year low. Other
precious metals also had positive returns in July with silver returning 5.7%
and platinum 8.8%.

Bulk commodities rallied in July. Iron ore in particular added approximately
14%, driven by a replenishment of inventories at Chinese steel mills. Iron ore
ended the month at around $134/t (source: CSLA, 63.5% Fe). Base metals overall
had a fairly muted month with copper, aluminium, zinc, nickel and lead all
posting returns between -1% and +2%.

The potash industry was shaken over the month by the announcement by Russian
potash producer Uralkali that it was breaking out of the Belorussian Potash
Company and commented that potash prices could fall significantly in coming
months. This caused potash equities to drop by 10-30% on the day of the
announcement. We have an exposure of approximately 1.5% to potash through two
long term holdings which were among the worst performers in July in the
Company.

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.

14 August 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.