Kemess South Mine

Northgate Minerals announced its financial and operating results for the three and six months ended June 30, 2010. Results recorded consolidated revenue of $122.7 million in the second quarter of 2010, compared with revenue of $130.3 million recorded in the same period last year. Net earnings for the second quarter of 2010 were $4.3 million or $0.01 per share, compared with net earnings of $5.4 million or $0.02 per share in the second quarter of 2009. Production includes 68,275 ounces of gold and 9.6 million pounds of copper at an average net cash cost of $693 per ounce.

Northgate reported gold production during the quarter ended March 31, 2010 of 9,529 oz from Kemess South Mine in British Columbia, Canada. This compares 59,306 oz in the same period in 2009. Kemess South has approximately one year remaining until the end of its mine life. Mining activities in the first quarter of 2010 were carried out in the eastern end of the pit with lower ore grades compared with the western end of the pit that was mined in the first quarter of 2009. Kemess South posted gold and copper production of 24,703 ounces and 9.5 million pounds, respectively, in the first quarter of 2010 compared with 59,306 ounces and 15.0 million pounds in the corresponding quarter of 2009.

Northgate Minerals reported gold production of 81,098 ounces in the fourth quarter of 2009, bringing full year production to a record 362,743 ounces of gold.