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:
“In modern life nothing produces such an effect as a good platitude. It makes the whole world kin.”
—Oscar Wilde (1854–1900)
“I know this, and I know it from actual experience in the Orient, that the progress of modern Christian civilization has largely depended on the earnest hard work of the Christian missions of every denomination.”
—William Howard Taft (1857–1930)
“Anne: He hit me, Jack. My own brother, he hit me.
Jack: Your brother’s an old-fashioned man, he believes in a sister’s honor. Me, I’m Modern Man, the 20th-century type. I run.”
—Robert Rossen (1908–1966)