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 ...
A giant, inflatable structure designed to prevent flooding in subways was rolled out, literally, for media observers inside a full-scale, mock subway tunnel. As the video shows, in under five minutes ...
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 ...
Scientists have successfully tested an unprecedented technology for containing flooding or dangerous gases in mass transit tunnels: a giant plug. Twenty years ago in Chicago, a small leak in an unused ...
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