25 The defence submits that the authorities referred to are no longer good law when examined in the light of the decision of the High Court in He Kaw Teh v R (1984 - [1985] HCA 43; 1985) 157 CLR 523. In that case, the High Court held that the presumption that mens rea is required before a person can be held guilty of a grave criminal offence is not displaced in relation to the Customs Act 1901, s233B(1)(b). As to a different offence created by that Act, s233B(1)(c), it was held that the prosecution bore the onus of proving that the accused knew of the existence of the prohibited import in his possession. In reaching their decision in relation to s233B(1)(c), the members of the High Court paid regard to exempting statutory provisions applicable to that provision (but not applicable to s233B(1)(b)) which are very loosely equatable with s129(3). As I understand the submission put to me by the defence, it is contended that as the High Court found that to establish a breach of s233B(1)(c), the prosecution bore the onus of proving that the accused knew of the existence of the prohibited import in his possession, notwithstanding the existence of exempting provisions loosely equatable with s129(3), then, by parity of reasoning, a similar decision should be reached in relation to s129(2) and (3). That submission is not supportable. The reasons given by the members of the High Court show that the decision of the court turned on the particular statutory provision under consideration. Matters referred to included the meaning of the words "in his possession" in s233B(1)(c). The judgments focus on the meaning of those words. Gibbs CJ, agreed with by Mason J, referred to this as the critical question at 541. See also Brennan J at 585 and 589, and Dawson J at 598. Importantly, the construction adopted by the court did not render the exempting provisions meaningless or nugatory. See Gibbs CJ at 539 and Brennan J at 589.