Oz Minerals (ASX:OZL) says its Quarter 4 copper output slipped 1.4 per cent on the prior corresponding period to 29 482 tonnes.
Annual copper production came in at 115,998 tonnes, which was within the company's forecast of 106,000 to 116,500 tonnes.
Gold production in the three months ended December 31 rose 9.4 per cent to 40,052 ounces from 36,601 ounces in the year-earlier period.
The company has increased its gold production guidance for 2019 to 115000 to 125 000 due to an increase in gold feed grade.
Shares in Oz Minerals (ASX:OZL) trading 1.2 per cent higher at $9.27.