World Metal Price (US$)Date Silver/Oz Zinc/Ton Aluminium/Ton Copper/Ton Platinum/Oz30-May 37.80 2262.85 2635.81 9257.92 1796.0031-May 38.12 2258.82 2620.80 9248.96 1801.001-June 38.15 2270.02 2668.29 9325.34 1823.002-June 37.01 2259.26 2629.76 9199.90 1816.003-June 35.03 2273.82 2625.73 9262.62 1812.00Source:kitco.com
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