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Updated: Physicists deal with aftermath of underground fire

Researchers have completed an inspection of damage at the underground physics lab closed due to fire on March 17, says the lab’s director. The Soudan Underground Laboratory of the University of Minnesota was shut down for ten days after fire broke out in the timbers lining an elevator shaft that serves the lab site, located on level 27 of the mine, which is 710 metres underground (the underground location shields out cosmic rays that would act as a source of background noise for experiments in the lab). After going back in for the first time yesterday, lab staff found some damage from firefighting foam forced down the shaft that burst open the doors to the lab, and are reckoning with a need for substantial clean-up to remove debris from the fire that was brought in, says lab director Marvin Marshak. 

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