35,000 gallons of prevention: Containing a tunnel flood with an inflatable stopper
Tuesday, March 27, 2012 - 14:30
in Earth & Climate
Twenty years ago in Chicago, a small leak in an unused freight tunnel expanded beneath the Windy City and started a flood which eventually gushed through the entire tunnel system. A quarter-million people were evacuated from the buildings above, nearly $2 billion in damages accrued, and it took 6 weeks to pump the tunnels dry.