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Tube dust: Union demands tests into 'toxic' particles

The Aslef union is calling for urgent research into the long-term impact of inhaling the particles. The main component is iron oxide but traces of quartz, chromium and copper have also been found. Transport for London says it is "doing all it can to ensure the air was as clean as possible" and it is supporting research into the effects of Tube dust.  Read more....



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