Northgate Issues Statement on its American Stock Exchange Closing Price

Last update: 10:05 p.m. EDT Sept. 19, 2008

VANCOUVER, Sept 19, 2008 /PRNewswire-FirstCall via COMTEX/ -- (All figures in US dollars except where noted) - Northgate Minerals Corporation (CA:NGX: news, chart, profile) (NXG: NXG 1.37, +0.36, +35.6%) has noted that a large volume of the Company's shares were traded on the American Stock Exchange shortly after 4:00 pm ET on September 19, 2008 at a price of $1.01. This share price was considerably outside the intraday trading range and inconsistent with the Cdn$1.57 closing price recorded on the Toronto Stock Exchange. Northgate wishes to assure the market that it is unaware of any recent change or adverse development with respect to the Company's assets, financial position, or any other factor, that could have accounted for the unusual trading activity that took place after 4:00 pm ET today on the American Stock Exchange.

Northgate Minerals Corporation is a mid-tier gold and copper producer with mining operations, development projects and exploration properties in Canada and Australia. The company is forecasting 385,000 ounces of unhedged gold production in 2008 and is targeting growth through further acquisitions in stable mining jurisdictions around the world. Northgate is listed on the Toronto Stock Exchange under the symbol NGX and on the American Stock Exchange under the symbol NXG.