1.   BHP said the increase resulted from a higher rate of ore treatment, partially offset by lower gold recoveries.

2.   Mt Leyshon said the higher production resulted from higher gold ore grades and slightly higher rates of ore treatment.

3.   The failure of a motor had adversely affected ore treatment in the previous quarter, the company said.

4.   The increase resulted from a higher rate of ore treatment.

5.   The higher output resulted from increased ore grades and a higher rate of ore treatment.