News Summary: Industrial metals up on mixed news

ECONOMIC HINTS?: Prices rose for industrial metals as some positive signs emerged from a mixed batch of global economic news. U.S. manufacturing activity rose, overall U.S. construction spending dropped and manufacturing remained weak in China.

BACKING QE3: Gold prices posted gains after Chairman Ben Bernanke defended the Federal Reserve's newest measures designed to encourage economic growth. Investors often buy gold as a hedge against inflation and volatility in currencies.

WHAT'S NEXT: Many investors are waiting for the September employment report, which will be released Friday. The August unemployment rate was 8.1 percent.