Forrest & Forrest Pty Ltd v Wilson

The High Court of Australia considered an appeal by Forrest & Forrest Pty Ltd against the decision of the Court of Appeal of the Supreme Court of Western Australia. The dispute concerned the validity of applications for mining leases lodged by the second and fourth respondents, which were allegedly not accompanied by a mineralisation report as required by s 74(1)(ca)(ii) of the *Mining Act 1978* (WA). Forrest argued that this non-compliance rendered the applications invalid and deprived the warden of jurisdiction to hear them.

The central legal issue before the High Court was the proper construction of s 74(1)(ca)(ii) of the *Mining Act 1978* (WA) and, in particular, the effect of non-compliance with its requirement that an application for a mining lease "shall be accompanied by" a mineralisation report. The court had to determine whether this requirement was a condition precedent to the exercise of jurisdiction, such that failure to comply invalidated the application and any subsequent proceedings, or whether it constituted an informality or irregularity that could be overlooked.

The High Court reasoned that the language of s 74(1)(ca)(ii), particularly the phrase "shall be accompanied by," indicated a mandatory condition precedent. The Explanatory Memorandum for the relevant amending legislation underscored the intention to limit mining lease applications to cases where significant mineralisation had been discovered or mining proposals were lodged, thereby preventing the use of lease applications for further exploration. The court concluded that non-compliance with this statutory requirement was not a mere informality or irregularity but a failure to satisfy a jurisdictional prerequisite. Consequently, the warden lacked jurisdiction to hear the applications, and any subsequent report or recommendation made by the warden was invalid.

The High Court allowed the appeal, setting aside the orders of the Court of Appeal. It declared that the warden did not have jurisdiction to hear the applications for mining leases 08/478 and 08/479 as they were not accompanied by the requisite mineralisation report. The court also declared that the warden did not make a valid report and recommendation to the Minister and issued a writ of certiorari quashing the purported report and recommendation. The second and fourth respondents were ordered to pay the appellant's costs.