World Metal Price (US$) Date Sliver/Oz Zinc/Ton Aluminum/Tom Copper/Ton Platinum/Oz 21- May 28.65 1939.17 2045.57 7885.25 1460.00 22- May 28.26 1924.16 2019.81 7929.38 1438.00 23- May 27.80 2004.58 2004.58 7805.95 1428.00 24- May 27.75 1905.12 1994.94 7759.14 1416.00 25- May 27.24 1910.05 2000.99 7813.12 1425.00
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