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Message: <blockquote data-quote="lkdood" data-source="post: 7309590" data-attributes="member: 92282">Latest from the UK Meteorological OfficeNew observations of volcanic dustThe weather balloon and probe was launched at 9 a.m. on Monday morning  and    clearly showed a 600 metre-thick layer of dust at a height of 4 km.<img src="http://www.metoffice.gov.uk/corporate/pressoffice/2010/images/20100420_plot.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />The layer was found to contain highly abrasive dust particles, at  concentrations    of a third of a milligram of dust in each cubic metre. While the  amount sounds    small, a typical jet engine would ingest some 60 billion of these  particles    every second.</blockquote>

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