Direct access is acceptable when the scaffold is not more than 14 inches (36 centimeters) horizontally and not more than 24 inches (61centimeters) vertically from the other surfaces. 1926.451(e)(8) The standard prohibits the use of crossbraces as a means of access.
H Bomb. Abbreviation for Hydrogen Bomb. The hydrogen bomb is the big brother of the first nuclear bombs, Fat Man and Little Boy, which were dropped on Nagasaki and Heroshima in 1945. The hydrogen bomb uses a hydrogen neutron, fired at high speed, into an atom of some unstable element, usually uranium.
Scientists at Los Alamos were also intrigued as to which type of bomb was the better â a uranium or plutonium based bomb. âLittle Boyâ showed its effectiveness at Hiroshima but another bombing mission was needed to see what damage a uranium bomb could do. Nagasaki was not Americaâs primary target.