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Conservation for big guns that opened Civil War

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SULLIVANS ISLAND, S.C. (AP) — Preservationists are using computer sensors and other high-tech methods to protect massive iron Civil War guns at a fort in South Carolina that fired on Fort Sumter to open the war in April 1861. The sensors and modern rust-fighting epoxy coatings are being used to preserve historic siege and garrison guns, some of which were used to lob shells at Fort Sumter in...

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