Conservator Anna Funke stands next to the H.L. Hunley in the Warren Lasch Conservation Center in North Charleston, S.C., Wednesday, June 7, 2017. For years, two scientists have been painstakingly cleaning a century and a half of sand, sediment and corrosion from the first submarine in history to sink an enemy warship. (Michael Pronzato/The Post And Courier via AP)
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