BASE METALS (London Metal Exchange -- Midday official cash/3-month prices, US$ per tonne)DateMay 22May 21May 18May 17May 16Aluminium1538/15491541/15491542.50/15411530/15201518/1505.50Al Alloy1215/12521228/12651240/12751230/12651220/1258Copper1720/17401720.50/1735.501686.50/1706.501654.50/1675.501632.50/1657Lead480/486.50485/490481/487.50464/475463/474Nickel7260/71907320/72557425/73207535/74407415/7305Tin4885/49454915/49754925/49804935/49904935/4995Zinc935/955.50946.50/968948/966.50934/954931/951.50PRECIOUS METAL PRICES (London fix, US$ per troy oz.)DateMay 22May 21May 18May 17May 16Gold AM282.75288.35272.10271.75269.10Gold PM284.15291.25273.00274.00270.90Silver4.51504.58504.45004.42004.3350Platinum614.00616.00613.00610.00612.00Palladium647.00650.00655.00640.00638.00
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