The serial number indicates that the bomb, a Mark-82 — a sleek steel case eighty-seven inches long, twelve inches in diameter, and filled with five hundred pounds of explosive — was produced by Raytheon, the third-largest defense company in the United States.
Yet if the Chechen actions had a stamp distinct from Al Qaeda's, the fact that this attack occurred after the World Trade Center bombing left a mark that was clear in the Moscow operations.
Following the production of the 600 lb depth bomb, a Mark III angular-velocity, low-level bombsight was developed.
It may take weeks or longer to confirm or refute the North's claim that it successfully tested a hydrogen bomb, which would mark a major and unanticipated advance for its still-limited nuclear arsenal.
In June 1954, he became the first naval aviator to command the Naval Ordnance Laboratory, where he was involved with the development of the Mark 52 naval mine and the Mark 90 nuclear bomb, a nuclear depth charge.
In April, Reuters reported that a study of the impact of a truck bomb on the Mark Center, found on an Army Corps of Engineers Web site, indicated that the buildings were designed to withstand an explosion equivalent to 220 pounds of TNT, far less than what was used to nearly demolish the Murrah Building.
NEW YORK, 16 December 2014 – The massacre today of more than 100 children in an attack on a school in Pakistan, and the reported killing of at least 15 school girls in a car bombing in Yemen, mark a dark day in the closing weeks of a bleak year for children around the world.
UNICEF Statement on deadly attacks on children in Yemen and Pakistan NEW YORK, 16 December 2014 – The massacre today of more than 100 children in an attack on a school in Pakistan, and the reported killing of at least 15 school girls in a car bombing in Yemen, mark a dark day in the closing weeks of a bleak year for children around the world.
Many Somalis fear this bombing could mark a new wave of attacks on civilians.
But while the attacks on aid workers, clerics and soldiers seemed intended to deter those supporting the government or rebuilding or securing the country, the attack on ordinary Afghans represented by today's bus bombing may mark a new stage in the violence in the south.
The Naval Ordnance Laboratory also developed the Mark 90 nuclear bomb, a nuclear depth charge, which was tested during Operation Wigwam in May 1955.
