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| - II,192 Grenades and Demolition Section security-classified project files, 1946-55 [A1, Entry 1174] (7 ft.), contain correspondence, reports, studies, design specifications, plans, drawings, photographs, and other records that originated with projects to research, design, develop, and test weapons and weapons components such as demolition charges, detonating cord, mine fuzes, grenades (hand, rifle,
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