Western Australia v Hamersley Iron Pty Ltd (No 2)

The High Court of Australia considered a dispute between the State of Western Australia and Hamersley Iron Pty Ltd concerning the interpretation and application of a State agreement. The core of the disagreement lay in the State's assertion of a right to levy royalties on iron ore extracted by Hamersley Iron, which the company contested.

The central legal question before the Court was whether the State of Western Australia was entitled to levy and recover royalties on iron ore produced and exported by Hamersley Iron Pty Ltd under the terms of the relevant State agreement. This involved a detailed examination of the contractual provisions governing the parties' rights and obligations, particularly in relation to the extraction and sale of iron ore.

The Court's reasoning focused on the precise wording of the State agreement and the legislative framework under which it was enacted. It was held that the agreement, when read as a whole and in conjunction with the governing legislation, did not grant the State the right to levy royalties in the manner it had sought. The Court analysed the specific clauses relating to the payment of royalties, concluding that the conditions precedent for the imposition of such royalties had not been met. The legal principle applied was one of contractual interpretation, emphasizing the importance of the plain meaning of the words used by the parties in the agreement.

The High Court found in favour of Hamersley Iron Pty Ltd, holding that the State was not entitled to recover the royalties claimed.