Aluminium ingots are seen outside a warehouse that stores London Metal Exchange stocks in Port Klang Free Zone, outside Kuala Lumpur, March 23, 2015. Another source with direct knowledge said that the aluminium delivered to Gwangyang was produced by Rusal. The sources did not say how much of Rusal's aluminium had been delivered by Glencore to LME warehouses in Gwangyang. Glencore and the London Metal Exchange declined to comment. Stocks of aluminium in LME warehouses jumped 65,825 tonnes to 433,025 tonnes on Friday.

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