But despite safety standards and widespread hard ... a single hard hat that fits every individual's comfort zone. Selecting a hard hat that meets ANSI standard Z89.1-2014 for industrial head ...

The result: a “hard hat” for flight crews—the H-1 helmet for the Navy and P-1 for the Army Air Forces (forerunner of the Air Force)—that became standard-issue gear in 1947. “Take a ...