Sino Iron Pty Ltd & Ors v Mineralogy Pty Ltd

Sino Iron Pty Ltd and its associated entities (the appellants) brought proceedings against Mineralogy Pty Ltd (the respondent) in the High Court of Australia concerning a dispute over the interpretation and application of a joint venture agreement and a related royalty agreement. The core of the dispute revolved around the appellants' obligation to pay royalties to the respondent for iron ore extracted from the Cape Preston project in Western Australia.

The High Court was required to determine whether the appellants had breached the royalty agreement by failing to pay royalties on iron ore that had been processed and exported, but which the appellants argued was not "ore" for the purposes of the royalty agreement. Specifically, the court had to consider the definition of "ore" within the context of the agreements and whether the appellants' interpretation of this term was legally sound. A further issue was whether the appellants had acted in good faith in their dealings with the respondent under the agreements.

The Court's reasoning focused on the plain meaning of the contractual terms and the objective intention of the parties at the time the agreements were made. It was held that the appellants' interpretation of "ore" was too narrow and did not reflect the commercial reality of the joint venture, which was to extract and process iron ore for export. The Court found that the appellants had breached the royalty agreement by failing to pay royalties on the processed iron ore. Furthermore, the Court concluded that the appellants had failed to act in good faith, as required by the agreements, in their dealings with Mineralogy.

The High Court dismissed the appeal, upholding the primary judge's findings and orders.