12An offence under any of the following provisions of the Offences against the Person Act 1861—
(a)section 28 (causing bodily injury by gunpowder);
(b)section 29 (causing gunpowder to explode etc. with intent to do grievous bodily harm);
(c)section 30 (placing gunpowder near a building etc. with intent to cause bodily injury).
13An offence under any of the following provisions of the [1883 c. 3.] Explosive Substances Act 1883—
(a)section 2 (causing explosion likely to endanger life or property);
(b)section 3 (doing any act with intent to cause such an explosion, conspiring to cause such an explosion, or making or possessing explosive with intent to endanger life or property).