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SZ/OEMU/19/3/2 - Design of steel crash helmet [undated]

Reference code
SZ/OEMU/19/3/2
Level of description
Item
Title
Design of steel crash helmet [undated]
Date/s
[194?]
Quantity & Format
3 leaves
Scope and content
Discusses the strength of the steel shell; the helmet linings; the external surface; neck band; and percentage protection of the standard steel helmet, the new steel helmet and the steel crash helmet. Includes a graph showing the stretch capacity of various linings.
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