9. Kitto J., with whom Taylor and Windeyer JJ. agreed, held that sub-s. (3) confered no private right to recover damages for breach of the sub-section because there could be no causal relation "between on the one hand, the lack of a certificate on the part of a person who is allowed to drive a power crane and, on the other hand, an injury sustained through the driving of the crane by that person". Axiomatically, if a breach of a statutory provision is incapable of causing damage, the statute cannot give rise to an implication that there is a private right to recover damages for its breach. In Leask Timber Kitto J. construed s. 17 not as restricting the driving of power cranes to competent and trustworthy persons - an appropriate precaution to safeguard those whom the driving of cranes might endanger - but as providing for a governmental check upon the competency and trustworthiness of drivers. Sub-section (3) was held to provide for "proof of a person's competence and trustworthiness to the satisfaction of officers of the government before the person may be allowed to drive a power crane. It is impossible to maintain as propositions of fact that until he gets his certificate he is incompetent or untrustworthy, and that the grant of the certificate makes him competent and trustworthy". (1961) 106 CLR, at p 45 . But the prohibition against allowing a person who is not a "qualified operator" to use an explosive-powered tool is not a mere licensing provision. By incorporating the definition of "qualified operator" in reg. 118B(1), the prohibitions contained in that provision are made to depend upon the operator's immaturity of years, inexperience or ignorance. A person is prohibited from using a Ramset gun, and another person is prohibited from employing, instructing or allowing him to use such a gun if he is not over the age of eighteen, if he has not been thoroughly trained in the use of explosive-powered tools, if he has not been fully instructed as to the dangers associated with their use and as to the precautions to be taken with respect to them or if he does not have a thorough knowledge of Pt IXA of the Regulations. The regulation is not concerned with the licensing of operators; it is concerned with preventing use of explosive-powered tools by operators who are not sufficiently mature, or sufficiently trained or sufficiently knowledgeable to be entrusted with so dangerous a tool. (at p241)