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Hard hat. A hard hat is a type of helmet predominantly used in workplace environments such as industrial or construction sites to protect the head from injury due to falling objects, impact with other objects, debris, rain, and electric shock. Suspension bands inside the helmet spread the helmet's weight and the force of any impact over the top ...
A hard felt hat with a rounded crown created in 1850 by Lock's of St James's, the hatters to Thomas Coke, 2nd Earl of Leicester, for his servants. More commonly known as a Derby in the United States. Breton: A woman's hat with round crown and deep brim turned upwards all the way round. Said to be based on hats worn by Breton agricultural workers.
Standard diving dress, also known as hard-hat or copper hat equipment, deep sea diving suit or heavy gear, is a type of diving suit that was formerly used for all relatively deep underwater work that required more than breath-hold duration, which included marine salvage, civil engineering, pearl shell diving and other commercial diving work, and similar naval diving applications.
The Hard Hat Riot occurred in New York City on May 8, 1970, when around 400 construction workers and around 800 office workers attacked around 1,000 demonstrators affiliated with the student strike of 1970.
In 1975 the first female hard hat diver to be qualified was Donna Tobias. Ten years later Heidemarie Stefanyshyn-Piper became a salvage officer and would become another USN astronaut/diver. Also that year, Seabee diver Robert Dean Stethem was killed by hijackers on TWA Flight 847 at Beirut. The Navy named USS Stethem DDG-63 in his honor.
A diving helmet is a rigid head enclosure with a breathing gas supply used in underwater diving. They are worn mainly by professional divers engaged in surface-supplied diving, though some models can be used with scuba equipment. The upper part of the helmet, known colloquially as the hat or bonnet, may be sealed directly to the diver using a ...
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