Miners gapping down premarket (GDX -4.5%; (SIL -3.3%) after weak factory data from China and Fed-induced downbeat sentiment: AUY -7.2%, GFI -6.5%, SLW -6.3%, GG -6.1%, MUX -5.9%, AU -5.7%, KGC -5.6%, RIO -5.3%, GOLD -4.9%, ABX -4.7%, BHP -3.5%, EGO -2.3%, VALE -2%. (earlier)