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U.S. Commerce Dept. @CommerceGov
The HYDROLAB was @NOAA’s first undersea research habitat where aquanauts could live on the ocean floor for days or weeks at a time. It was used by NOAA & its partners from approx 1970 to 1985, in which time it housed over 700 scientists on 85+ missions. https://t.co/tL6z2DqP05 — PolitiTweet.org