BASE METALS (London Metal Exchange-Midday official cash/3-month prices in US$ per tonne)DateJuly 21July 20July 17July 16July 15Al Alloy1330/12301305/12151250/11951270/12001250/1185Aluminium1349.5/13761331/1354.51313.5/1336.51315/13361284.5/1309Copper1694.5/17131694/17131665/16841689/17061636/1656Lead534/535536/537542/539550/547544.5/539Nickel4510/45804340/44104300/43554360/44204265/4330Tin5740/55405690/55205680/55205560/54555685/5525Zinc1045/10691048.5/1073.51044.5/1067.51056/10801044/1070GOLD PRICES (London fix, US$ per oz.)DateJuly 21July 20July 17July 16July 15London AM295.20294.65293.60294.35292.80London PM294.90294.85293.80294.95293.15PRECIOUS METAL PRICES (London fix, per oz.)DateJuly 21July 20July 17July...
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