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Also on the Nymex, July platinum futures closed up $55.10 to $2,132 an ounce, and ended the week more than 1.4 percent higher. June palladium rose $12.70 to finish at $453.30 an ounce.

July copper futures rallied 9 cents, or 2.4 percent, to close at $3.83 a pound - up almost 3 percent for the week. July silver futures rose 28 cents to close at $16.96 an ounce, and the contract was up just 0.3 percent for the week.