High Low Close Change COPPER (in US cents per lb.) Apr 128.50 128.20 128.30 -- 10.60 May 129.10 126.70 128.20 -- 9.20 Jul 122.20 120.00 121.40 -- 8.50 SILVER (in US cents per oz.) Apr 581.60 + 2.00 May 588.90...
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