Abstract
In the long and often melancholy history of explosives the constructive use of explosive forces to shape metals is comparatively new. Adamson's work in 1876 and 1877 was perhaps the first related investigation to be described in the scientific literature. His tests were almost an exact counterpart of more recent free-forming trials, but his object was to assess the merit of different types of boiler plate rather than to explore a new method of forming. Munroe in 1888 described a method for the engraving of names and patterns in iron plates using gun-cotton, and one or two patents for allied processes were taken out at about the turn of the century.
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