RTA's bauxite production was up by 21%, alumina production by 15% and aluminium production by 15%.

The global mining giant expects its share of bauxite, alumina and aluminium production in 2013 to be 34Mt, 7.3Mt and 2.5Mt respectively.

In terms of its H1 2013 performance, the company has recorded a 16% increase in bauxite when compared with H1 2012, a 7% increase in alumina and a 14% increase in aluminium.

Pacific Aluminium figures, on the other hand, paint a gloomier picture with bauxite production in Q2 2013 down 4% on the same period in 2012, alumina production down 30% and aluminium production down 5%.

Where half-year figures were concerned, Pacific Aluminium's bauxite output remained static while alumina production was down 20% and aluminium down 6%.

Rio Tinto Alcan attributes its success to strong operational performance driving higher volumes at its Weipa bauxite mining facility in Australia, increased capacity at its Yarwun alumina refinery in Gladstone and improved third party demand.