Among other improvements, the workers have had to jackhammer through a cement floor that was nearly two feet thick _ thick enough to absorb a potential blast from the torpedo warheads.
22.
On the morning of 20 June 1956, while dumping condemned ammunition from NAD Charleston, the " Calhoun County " experienced underwater explosions, caused by the detonation of several torpex-loaded torpedo warheads.
23.
"If they did bring tactical nuclear weapons for training or some other purpose to Kaliningrad, they would most likely be naval, like torpedo warheads, " said independent defense analyst Pavel Felgenhauer.
24.
Military experts on Saturday destroyed a 200-kilogram ( 400-pound ) torpedo warhead caught in the trawling net of a fishing boat off the southern coast of Sweden, a navy official said.
25.
Salvage divers from Halliburton first detached the bow from the rest of the vessel because it may have contained unexploded torpedo warheads and because it could break off and destabilise the lifting.
26.
Investigators'search through the Kursk's carcass was repeatedly suspended because of the need to remove undetonated explosives from torpedo warheads which were blown into the Kursk's second and third compartment by the blasts.
27.
The ship was magazines until one day in 1930 when a charge set off a torpedo warhead, which caused a nearby powder magazine to explode, throwing a column of water into the air.
28.
The existing underwater protection was replaced by the Pugliese system that consisted of a large cylinder surrounded by fuel oil or water that was intended to absorb the blast of a torpedo warhead.
29.
Though the particular fact was kept secret at the time, nuclear activity, probably from torpedo warheads was detected on board and reported to PM F�lldin while the vessel was still stuck in the firth.
30.
That second blast was likely caused by fire from the first blast setting off other torpedo warheads or propellant fuel, Wallace said Tuesday by e-mail from Chile, where he and Koper are doing other research.
