Date Sept. 28 Sept. 25 Sept. 24 Sept. 23 Sept. 22 BASE METALS (London Metal Exchange -- Midday official cash/3-month prices, US$ per tonne) Al Alloy 1620/1650 1670/1700 1695/1720 1661/1710 1710/1740 Aluminum 1758/1792 1790.50/1827 1835.50/1864 1848/1881 1864.50/1893.50 Copper 5896/5901 5966/5990...
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