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http://news.discovery.com/tech/plug-prevented-subway-flooding-121101.html#mkcpgn=rssnws1
The Department of Homeland Security
(DHS) created the 32-by-16-foot inflatable plug prototype to thwart
terrorist attacks in the underground tunnels. It inflates like a ballon,
and if it were used in a flooding event, it would keep up to 35,000
gallons of water from getting in and over-taking the pumps.
The Department of Homeland Security
(DHS) created the 32-by-16-foot inflatable plug prototype to thwart
terrorist attacks in the underground tunnels. It inflates like a ballon,
and if it were used in a flooding event, it would keep up to 35,000
gallons of water from getting in and over-taking the pumps.