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Occup Health Saf. 2012 Jul;81(7):36, 38.

Three keys: safety performance, comfort.

Author information

  • Elvex Corporation, Bethel, CT, USA. fred@elvex.com

Abstract

Thanks to advances in safety, the hard hat has evolved through the decades. There have been many recent improvements, but its story began almost 100 years ago with the "Hard-Boiled Hat:" Patented in 1919, its name came from the steam used in the manufacturing process. The original "Hard-Boiled Hat" was manufactured of steamed canvas, glue, and black paint. North

PMID:
22808865
[PubMed - indexed for MEDLINE]
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