N.Y. Commodity Exchange Week's High Low Close Change COPPER (in US cents per lb.) May 67.15 66.25 66.90 -- 1.10 July 66.45 65.25 66.00 -- 0.95 Sept. 65.45 64.30 65.10 -- 1.20 SILVER (in US cents per oz.) May 926.0...
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