Portfolio Update

BLACKROCK WORLD MINING TRUST plc
All information is at 30 April 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)   -10.3%    -18.5%   -24.9%   -18.7%   -29.6%
Net asset value (diluted)     -10.3%    -18.5%   -24.9%   -18.7%   -28.5%
Share price                    -5.0%    -15.9%   -22.6%   -13.0%   -23.5%
HSBC Global Mining Index*      -9.8%    -16.9%   -17.7%   -25.4%   -21.2%
*Total return

Sources: BlackRock, HSBC Global Mining Index, DataStream

At month end
Net asset value           Including Income            Capital Only
Undiluted/diluted:                 549.13p*                541.59p
*Includes net revenue of 7.54p

Share price:                       498.00p
Discount to NAV**:                    9.3%
Total assets:                   £1,097.70m
Net yield***:                         4.2%
Gearing:                             12.8%

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                 40.5    Global                       47.5
Base Metals                 22.7    Latin America                17.6
Industrial Minerals         16.5    Other Africa                 17.3
Gold                         9.6    Australasia                   5.7
Silver & Diamonds            8.3    South Africa                  5.5
Platinum                     2.6    Democratic Republic of Congo  3.7
Energy Minerals              0.2    Emerging Europe               1.2
Net current liabilities     (0.4)   USA                           0.7
                           -----    Canada                        0.7
                           100.0    Indonesia                     0.3
                           =====    Mongolia                      0.2
                                    Net current liabilities      (0.4)
                                                                -----
                                                                100.0
                                                                =====
 

Ten Largest Investments                      % Total
                                              Assets
Company
Rio Tinto                                       11.3
BHP Billiton                                    10.3
London Mining Marampa Contract                   6.4
Glencore International                           6.1
Freeport McMoRan                                 4.6
First Quantum Minerals                           4.6
Xstrata                                          4.0
Industrias Penoles                               3.6
Inmet Mining                                     3.2
Vale                                             3.1

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

Performance
The US and China released disappointing macroeconomic data with weak readings
of industrial activity indicators in both countries.  Chinese 1Q GDP came in at
7.7% which missed expectations of 8% and industrial production grew by 8.9%
versus the 10.1% that was expected.  Investments in the Chinese property market
also appeared to be losing momentum.  Meanwhile, Europe continues to be stuck
in recessionary territory with poor Eurozone PMIs and lending activity to the
private sector contracting further.

It was a torrid period for the gold sector, prompted by a rapid mid-month fall
in the gold price.  Gold registered its worst two day performance for 30 years,
as paper market activity and ETF redemptions pushed the yellow metal as low as
$1,322/oz on 16 April 2013.  Conjecture over the longevity of the Federal
Reserve's stimulus programme and fears of a gold sale by the Cypriot government
as part of its bailout terms were cited as triggers for the rout.  Physical
demand helped gold recover some of its losses and reach $1,468/oz by the end of
the month.  Premiums for physical gold jumped, retail outlets across Asia sold
out of the metal and some traders reported levels of demand not seen since the
late 1980s as the bargain hunting began.

The pull back in Chinese data resulted in weakness in base metals and a
softening in iron ore prices.  Copper, nickel and tin lost 6.5%, 7.7% and 12.4%
respectively while iron ore prices fell by 4.4% to approximately $132/t (CLSA
MB China spot price 63.5% Fe).

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.

13 May 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.