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A grate fix for flooding

from The Wall Street Journal

A sidewalk on Greenwich Street has one of the first signs of what a Sandy-proofed New York subway could look like: a floodgate hidden in a ventilation grate that may one day allow workers to seal off tunnels from an advancing storm surge. While much attention has focused on higher-profile — and less proven — technologies such as inflatable tunnel plugs, the Metropolitan Transportation Authority is testing hatches that can seal off ventilation grates when a storm approaches. more

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