R v Drake-Brockman; Ex parte National Oil Pty Ltd

The High Court of Australia considered an application for a writ of prohibition brought by National Oil Pty. Ltd. against the members of the Coal Mining Industry Central Reference Board and the Australasian Coal and Shale Employees' Federation. The dispute concerned whether the Board had jurisdiction to extend an award covering shale mining employees to employees engaged in the processing of shale to produce crude oil and refine it into petrol. National Oil Pty. Ltd. argued that these latter operations constituted a separate manufacturing industry, distinct from the shale mining industry, and therefore fell outside the Board's jurisdiction under the National Security (Coal Mining Industry Employment) Regulations.

The primary legal issue before the Court was to determine the scope of the "shale mining industry" as defined by the Regulations, which included shale mining within the broader "coal mining industry." Specifically, the Court had to decide whether the processes of carbonising shale for crude oil production and the subsequent cracking, distillation, and refining of that oil into petrol were encompassed within the definition of the shale mining industry. A secondary issue was whether the Court had jurisdiction to issue a writ of prohibition against the Central Reference Board and the Federation, notwithstanding Regulation 17 of the National Security (Coal Mining Industry Employment) Regulations, which purported to exclude such challenges.

A majority of the Court, comprising Latham C.J., Rich and Williams JJ., held that the processes of treating shale for oil extraction and refining were not part of the "shale mining industry." They reasoned that "mining" primarily refers to the extraction of a substance from the ground, and that subsequent manufacturing or refining processes, even if conducted in the same locality as the mine, constitute distinct industries. The Court applied this principle to shale, distinguishing between the industry of producing shale and the industry of producing oil from shale. Furthermore, the majority affirmed that the High Court retained jurisdiction under section 75(v) of the Constitution to issue writs of prohibition against officers of the Commonwealth, such as the members of the Board, despite Regulation 17.

Consequently, the Court made the order nisi for prohibition absolute against the members of the Central Reference Board. Latham C.J., Rich and Williams JJ. also made the order absolute against the Australasian Coal and Shale Employees' Federation, finding that the Court had jurisdiction to deal with the entire matter before it. Starke and McTiernan JJ. dissented, holding that the treatment of shale for oil production was an essential and continuous part of the shale mining industry, analogous to gold mining and its subsequent recovery processes.