(1) A person who-

(a) knowingly causes a nuclear weapon explosion;

(b) develops or produces, or participates in the development or production of, a nuclear weapon;

(c) has a nuclear weapon in his possession;

(d) participates in the transfer of a nuclear weapon; or

(e) engages in military preparations, or in preparations of a military nature, intending to use, or threaten to use, a nuclear weapon,

is guilty of an offence.

(2) Subsection (1) has effect subject to the exceptions and defences in sections 48 and 49.

(3) For the purposes of subsection (1)(b) a person participates in the development or production of a nuclear weapon if he does any act which-

(a) facilitates the development by another of the capability to produce or use a nuclear weapon, or