Balloner og luftskibe, der kræver varm luft eller gasarter, der er lettere end luften, f.eks. helium eller brint, for at kunne lette.
“Nuclear reactor” Includes the items within or attached directly to the reactor vessel, the equipment which controls the level of power in the core, and the components which normally contain or come into direct contact with or control the primary coolant of the reactor core. ML8 “Precursors” Speciality chemicals used in the manufacture of explosives.