Rio Tinto Ltd. Fourth Quarter Commodities Production

The following table is a summary of quarterly principal commodities production as reported by Rio Tinto.

================================================================================
                                 4Q       3Q       2Q       1Q       4Q      3Q
                               2011     2011     2011     2011     2010    2010
================================================================================
                          ----------------- Production YoY% --------------------
Alumina                        2.7%    -4.6%     0.2%    -4.0%     0.4%    6.3%
Aluminium                     -0.1%     2.4%     0.6%     0.7%     0.4%   -1.8%
Bauxite                       11.9%     6.7%    11.1%    -0.8%    -5.7%   16.8%
Borates                        1.0%    -9.8%     6.0%     7.6%     3.1%   13.0%
Coal - hard coking            15.8%    13.9%   -25.9%   -12.4%     7.5%   17.2%
Coal - semi-soft coking       -6.3%    56.7%   -31.3%   -14.4%   -20.1%     n/a
Coal - AU thermal            -13.9%    -2.5%     5.1%    -0.9%     2.6%  -14.4%
Copper - mined               -26.0%   -31.6%   -24.3%   -14.5%    -8.9%  -19.0%
Copper - refined             -18.7%   -36.0%    -0.8%    -0.7%    -5.7%    6.1%
Iron ore                       2.3%     4.7%    12.0%    -3.4%     6.0%    1.3%
Uranium                      -32.3%   -14.5%   -60.4%   -47.1%    -2.5%  -26.5%
================================================================================
                                 4Q       3Q       2Q       1Q       4Q      3Q
                               2011     2011     2011     2011     2010    2010
================================================================================
                          ----------------- Production QoQ% --------------------
Alumina                        5.3%    -0.2%     5.8%    -7.6%    -2.3%    4.8%
Aluminium                     -0.1%     0.4%     1.5%    -1.9%     2.4%   -1.4%
Bauxite                        3.1%     5.2%     8.2%    -4.7%    -1.6%    9.5%
Borates                      -10.2%   -12.0%    20.6%     5.9%   -19.7%    3.4%
Coal - hard coking            -4.9%    56.3%     9.0%   -28.5%    -6.4%    1.6%
Coal - semi-soft coking        1.8%     6.4%    -0.2%   -13.3%    70.3%     n/a
Coal - Australian thermal     -3.0%    -3.9%    18.3%   -22.0%     9.8%   -6.7%
Copper - mined                25.4%   -14.1%   -13.1%   -23.7%    16.0%   -4.9%
Copper - refined              18.3%   -24.0%    -5.6%    -4.3%    -6.8%   17.8%
Iron ore                       2.8%     2.0%    16.7%   -16.3%     5.1%    9.2%
Uranium                       -6.6%   128.2%   -27.1%   -56.4%    18.0%    5.6%
                          -------------- Production (’000 tons) ---------------
Alumina                       2,355    2,235    2,240    2,117    2,292   2,343
Aluminium                       961      962      958      944      962     939
Bauxite                       9,466    9,178    8,726    8,067    8,462   8,604
Borates                         114      127      144      120      113     141
================================================================================
                                 4Q       3Q       2Q       1Q       4Q      3Q
                               2011     2011     2011     2011     2010    2010
================================================================================
Coal - hard coking            2,638    2,774    1,775    1,628    2,279   2,434
Coal - semi-soft coking         746      733      689      691      797     468
Coal - AU thermal             4,436    4,575    4,758    4,022    5,154   4,694
Copper - mined                  137      109      127      146      185     160
Copper - refined                 81       68       90       95      100     107
Iron ore                     51,207   49,834   48,851   41,876   50,050  47,608
Uranium (’000 lbs)            2,218    2,373    1,040    1,427    3,276   2,776
================================================================================

SOURCE: Rio Tinto Limited

To contact the reporter on this story: Minh Bui in Tokyo at mbui@bloomberg.net

To contact the editor responsible for this story: Marco Babic at mbabic@bloomberg.net

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