8:30a U.S. producer price index increases 0.2% in August 8:30a Gas prices account for most of increase in PPI 8:30a Core PPI minus food, energy, trade also rises 0.2% 8:30a PPI advances 2.4% in past 12 months, up from 1.9% 8:30a 12-month change in core PPI unchanged at 1.9% 8:31a Gold adds slightly to early gains after PPI report 8:31a December gold rises 0.4% at $1,338/oz.