Lingo, Shawn2021-12-072021-12-072008-11https://hdl.handle.net/1794/26923239 pagesThe new (though it is approaching ninety years of age) mine casemate at Fort Columbia is a unique structure. It is a subterranean structure of massive reinforced concrete, every bit as intimidating and fascinating as the Neo-Doric Art Deco gate- ways suggest. It still has secrets to unravel, but this report should resolve many previously unsettled questions.enCreative Commons BY-NC-ND 4.0-USTerminal Project