Pre-Market Gainers; Northgate Minerals Corporation up 48%

Northgate Minerals Corporation (NYSE: NXG) +48.25% on the acquisition by AuRico Gold.

Venoco, . (NYSE: VQ) +31.96% on going private proposal by the CEO.

Pandora Media (NYSE: P) +7.38% - hearing positive comments by a mid-tier analyst firm.

Taseko Mines Limited (NYSE: TGB) +5.18% after the report that the Canadian authorities have approved the company's mining project.