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Three-inch A.A. cartridge cases. Cartridge cases for three-inch antiaircraft shells are formed by successive drawing operations, from a flat brass disc into an elongated tubular shape with one rounded closed end. These shapes are trimmed before going on to the heading operation, with the more famili
Public domain

Three-inch A.A. cartridge cases. Cartridge cases for three-inch antiaircraft shells are formed by successive drawing operations, from a flat brass disc into an elongated tubular shape with one rounded closed end. These shapes are trimmed before going on to the heading operation, with the more famili

Palmer, Alfred T., United States. Office For Emergency Management · 1942-01-01 · photo, print, drawing

From the collection of Library of Congress. Free to download, adapt and use — no permission needed.

Subjects
ohiosafety film negativesunited states
Credit lineThree-inch A.A. cartridge cases. Cartridge cases for three-inch antiaircraft shells are formed by successive drawing operations, from a flat brass disc into an elongated tubular shape with one rounded. 1942-01-01. Palmer, Alfred T., United States. Office For Emergency Management. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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