FILE - In this May 19, 2016 file photo, a demolition crew razes a dilapidated home in Detroit. Researchers at the University of Michigan say cost-savings and public safety benefits of swiftly demolishing dangerous vacant houses in Detroit could outweigh the risk of asbestos exposure to people in neighborhoods. A study of 25 emergency demolitions shows small to undetectable concentrations of asbestos. (Daniel Mears/Detroit News via AP File)
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