Speculators and investors also poured money into metals on a weaker dollar, strong oil prices and tensions in the Middle East. Prices had room to go higher on bullish sentiment, before slipping on profit-taking, analysts said.

"The closure of mines is bullish news for the platinum market, which has shown supply shortfalls and stock drawdowns through most of the past decade," said Michael Widmer, director of metals research at Calyon Corporate and Investment Bank

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