World Metal Price (US$) Date Sliver/Oz Zinc/Ton Aluminum/Tom Copper/Ton Platinum/Oz 14- May 28.60 1950.14 2017.57 8140.38 1462.00 15- May 28.10 1946.11 2003.01 8022.34 1437.00 15- May 27.27 1935.14 1997.63 7855.01 1422.00 16- May 27.67 1949.92 2027.20 7947.52 1446.00 17- May 27.95 1916.99 2025.18 7788.93 1450.00
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