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PBS News Hour
Surfside investigator on uncovering the collapse's 'trigger'
There are still many questions about what happened at the Champlain Towers in Surfside, Florida. Earlier warnings regarding needed repair work are prompting questions about the original design and construction, and whether cost concerns eclipsed risk concerns. William Brangham discusses the matter with Allyn Kilshimer, a renowned structural and forensic engineer hired to investigate the collapse.
