METALS FALL: Copper for December delivery fell 8.65 cents, or 2.5 percent, to end at $3.3070 a pound. January platinum fell $22, or 1.4 percent, to finish at $1,532.40 an ounce. December palladium dropped $17, or nearly 3 percent, to $594.10 an ounce.

JOBS REPORT: Metals fell after the government reported that claims for unemployment benefits remained high last week. Prices of industrial metals are closely tied to economic growth. Signs of weakness in the economy tend to push their prices lower.

CROPS FALL: Corn and wheat fell for a second day after the USDA predicted there will be a bigger grain surplus in 2012 than the agency expected last month.