Portfolio Update

Merrill Lynch World Mining Tst PLC
20 April 2007

MERRILL LYNCH WORLD MINING TRUST plc

All information is at 31 March 2007 and unaudited.

Performance at month end with net income reinvested

                                                         One            Three           One         Three           Five
                                                       month           months          year         years          years
Net asset value* (undiluted)                            7.2%            10.9%         21.6%        157.6%         292.8%

Net asset value* (diluted)                              7.8%            11.1%         11.1%           n/a            n/a

Share price*                                           14.0%            14.8%         21.3%        161.1%         321.3%

HSBC Global Mining Index                                7.7%            13.4%         17.8%        134.3%         192.7%

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 entitlements per share were sold and
the proceeds reinvested on the first day of trading.

At month end

Net asset value

Undiluted:                                 567.53p     Includes net revenue of:                   2.62p

Diluted:                                   552.05p

Share price:                               505.00p     Discount to undiluted NAV:                11.02%

Warrant price:                              64.50p

Total assets:                           £1,000.17m     Net yield:                                 0.50%

Gearing:                                     3.18%

Ordinary shares in issue:                                171,703,279

Warrants in issue:                                        29,814,855

Ordinary shares held in Treasury:                            440,000




Sector                                       % Total          Country                                          % Total
Analysis                                      Assets          Analysis                                          Assets

Diversified                                     46.5          Global                                              25.2

Base Metals                                     26.8          Latin America                                       21.7

Platinum                                         8.0          South Africa                                        13.0

Gold                                             6.6          Australasia                                         11.8

Silver/Diamonds                                  5.3          Canada                                               9.6

Industrial Minerals                              3.9          Other Africa                                         6.1

Other                                            3.4          USA                                                  5.8

Net current liabilities                         (0.5)         China                                                1.8

                                                100.0         India                                                1.8

                                                              Kazakhstan                                           1.2

                                                              Europe                                               0.9

                                                              Indonesia                                            0.9

                                                              Laos                                                 0.4

                                                              Mongolia                                             0.3

                                                              Net current liabilities                             (0.5)

                                                                                                                  100.0





Ten Largest Equity Investments

Company                                       Region of Risk

Alcoa                                           USA

Anglo American                                  Global

BHP Billiton                                    Global

CVRD                                            Latin America

First Quantum Minerals                          Zambia

Impala Platinum                                 South Africa

Rio Tinto                                       Global

Teck Cominco                                    Canada

Xstrata                                         Global

Zinifex                                         Australasia




Commenting on the markets, Graham Birch, representing the Investment Manager
noted:



Much of the market uncertainty we saw at the end of February continued into
March, with concerns over US economic growth (fuelled by weakness within the
sub-prime mortgage market) dominating markets for much of the month.  Despite
this volatile environment, the mining sector remained robust over the period as
China, now the largest consumer of most commodities in the world, announced that
it anticipated demand to maintain momentum through 2007.  In particular, the
copper market felt the benefit of stronger demand from China.



The 'safe-haven' qualities of gold gave the gold price a boost towards the end
of the month as geopolitical tensions increased following Iran's seizure of
British military personnel in the Gulf.



We believe that the fundamentals for the mining sector are strong and will
remain so over the long term.  China continues to consume a larger share of
global demand, with India also showing strong growth.  Through 2007, we expect
this demand to continue and although US growth may be slightly below 2006 levels
this year, it should remain at reasonable levels.  The supply side reaction to
increased demand continues to be muted, with companies struggling to keep up due
to a lack of experienced personnel, equipment delays and a lack of quality
projects.



The fundamentals for mining equities therefore look positive, with historically
high metal prices set to continue, share buybacks proceeding at a rapid rate and
the possibility of further M&A activity as mining companies seek to grow quickly
and cost effectively.  The higher commodity prices have been translated into
higher profits for the Company's holdings.  In addition, further consolidation
in the industry should provide extra momentum to the 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).



20 April 2007




                      This information is provided by RNS
            The company news service from the London Stock Exchange