A hard hat is a type of helmet predominantly used in workplace environments, such as construction sites, to protect the head from injury by falling objects, impact with other objects, debris, bad weather and electric shock. Inside the helmet is a suspension that spreads the helmet's weight over the top of the head. It also provides a space of approximately 30 mm (1.2 inch) between the helmet's shell and the wearer's head so that if an object strikes the shell, the impact is less likely to be transmitted directly to the skull. Sometimes the helmet shell has a mid-line reinforcement ridge, which strengthens it against impact.
Blue-collar workers, especially union shop construction workers, engaged in occupations that require protective equipment are sometimes metonymically referred to as "hard hats".
A bump cap is a lightweight kind of hard hat with simplified suspension or padding in lieu of suspension and having only a chin strap. It is used where there is a possibility of scraping or bumping one's head on equipment or structure projections, but is not strong enough to absorb large impacts, such as from a tool dropped several stories.
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Famous quotes containing the words hard and/or hat:
“I’ve sometimes thought ... that the difference between us and the English is that the Scotch are hard in all other respects but soft with women, and the English are hard with women but soft in all other respects.”
—J.M. (James Matthew)
“It’s no go the picture palace, it’s no go the stadium,
It’s no go the country cot with a pot of pink geraniums.
It’s no go the Government grants, it’s no go the elections,
Sit on your arse for fifty years and hang your hat on a pension.”
—Louis MacNeice (1907–1963)