Modern
An alternative to the diving helmet that allows communication with the surface is the full face diving mask. These cover the diver's face and are held onto his head by adjustable straps.
"Diving helmet" sometimes means a hard safety helmet like a workman's helmet that covers the top and back of the head, but is not sealed. These may be worn with a full-face mask to provide impact protection.
During the First World War the British Army used a few diving helmets out of water as emergency protection from mustard gas.
Read more about this topic: Kirby Morgan
Famous quotes containing the word modern:
“I do not approve the extermination of the enemy; the policy of exterminating or, as it is barbarously said, liquidating enemies, is one of the most alarming developments of modern war and peace, from the point of view of those who desire the survival of culture. One needs the enemy.”
—T.S. (Thomas Stearns)
“... it must be obvious that in the agitation preceding the enactment of [protective] laws the zeal of the reformers would be second to the zeal of the highly paid night-workers who are anxious to hold their trade against an invasion of skilled women. To this sort of interference with her working life the modern woman can have but one attitude: I am not a child.”
—Crystal Eastman (1881–1928)
“It is only the modern that ever becomes old-fashioned.”
—Oscar Wilde (1854–1900)