Portfolio Update

BLACKROCK WORLD MINING TRUST plc
All information is at 31 May 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)     0.3%    -16.1%   -12.4%   -13.2%   -33.3%
Net asset value (diluted)       0.3%    -16.1%   -12.4%   -13.2%   -32.1%
Share price                    -1.4%    -13.1%   -11.2%   -10.1%   -27.8%
HSBC Global Mining Index*      -0.6%    -15.5%    -7.4%   -21.5%   -25.7%
*Total return

Sources: BlackRock, HSBC Global Mining Index, DataStream

At month end
Net asset value           Including Income            Capital Only
Undiluted/diluted:                 550.95p*                539.69p
*Includes net revenue of 11.26p

Share price:                       491.00p
Discount to NAV**:                   10.9%
Total assets:                   £1,096.81m
Net yield***:                         4.3%
Gearing:                             12.3%

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                 40.8    Global                       47.8
Base Metals                 22.7    Other Africa                 18.0
Industrial Minerals         17.0    Latin America                16.7
Gold                         8.9    Australasia                   5.5
Silver & Diamonds            8.0    South Africa                  4.8
Platinum                     2.0    Democratic Republic of Congo  3.5
Energy Minerals              0.2    Emerging Europe               1.2
Net current assets           0.4    USA                           0.9
                           -----    Canada                        0.7
                           100.0    Indonesia                     0.3
                           =====    Mongolia                      0.2
                                    Net current assets            0.4
                                                                -----
                                                                100.0
                                                                =====
 
Ten Largest Investments                      % Total
                                              Assets

Company
Rio Tinto                                       11.1
BHP Billiton                                    10.9
Glencore Xstrata                                10.3
London Mining Marampa Contract                   6.6
First Quantum Minerals                           4.9
Freeport-McMoRan                                 4.5
Industrias Penoles                               3.3
Inmet Mining                                     3.2
Iluka Resources                                  3.1
Fresnillo                                        3.0

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

Performance
US data continued to improve with consumer confidence reaching over five year
highs.  Better leading indicators led to increased market volatility on the
back of concerns that the US Federal Reserve may consider tapering QE sooner
than expected.  Macroeconomic data from China disappointed with the HSBC PMI
moving into contractionary territory at 49.2 and the IMF cutting 2013 Chinese
GDP growth forecasts.

Copper gained 3.7% over the month (in US dollar terms).  Prices appreciated on
supply concerns following the announcement that Freeport-McMoRan will shut its
Indonesian Grasberg operation for three months, which could reduce copper
supply by 125kt representing 0.5% of global supply.  Strong import numbers from
the China State Reserve Bureau were also supportive of copper prices over the
month.

Iron ore prices lost 14.5% to US$113/t (CSLA MB China spot price 63.5% Fe) as
the market began to factor in the expected seasonal weakness during the
northern hemisphere summer.  It is worth highlighting that iron ore inventory
levels at Chinese steel producers and ports are now at very low levels.

Platinum producers had a difficult month after Anglo American Platinum
announced they had revised their production curtailment plans.  The company
will be closing three shafts instead of the four originally announced which
means capacity closure will be reduced by approximately 150koz versus the
original guidance, moving the market into surplus. Platinum prices fell by 3.2%
in May.

Elsewhere, performance of other metals was mixed.  Precious metals performed
poorly with gold and silver losing 5.1% and 7.6% respectively while base metals
such as tin and aluminium had positive returns (2.6% and 2.5% respectively).

The Glencore-Xstrata merger was completed and the combined entity started
trading on 2nd May.  Glencore Xstrata will disclose expected synergies over the
summer but management has already announced US$500m in synergies, which we
anticipate will likely be of greater magnitude.  

Strategy/Outlook
The mining sector and other cyclical areas have struggled over the last two
years as the market has downgraded global growth expectations.  Near term
performance for the sector is likely to be sensitive to macroeconomic
indicators, with the potential for a recovery should growth and risk appetite
improve.

In the medium term, commodity prices are likely to remain range-bound as supply
and demand have come closer into balance.  We expect greater tightness 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-off markets of the last two years.

17 June 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.