Despite rain impacting on mining operations in the Hunter Valley, Coal and Allied Industries say production rose 34 per cent in the last quarter of 2010.
Its share of total saleable production rose from 4 2888 kilotonnes (kt) in the September quarter to 5 666 kilotonnes in the December quarter.
The company’s share of coal also saw a rise, increasing by 11 per cent to 5 401 kt from September to December.
"Production continued to be impacted by extended periods of wet weather, with more than 13 per cent of calendar time lost to rain during the quarter," the company said.
"This was similar to the previous quarter, with both well above historically anticipated levels."
Increased capacity at its Hunter Valley and Mount Thorley Wakworth mines and additional load and haul capacity was delivered by Coal and Allied in the fourth quarter of last year.