Emerald Quarry Industries Pty Ltd v Commissioner of Highways (SA)

Emerald Quarry Industries Pty Ltd (the claimant) brought a claim against the Commissioner of Highways (South Australia) (the respondent) in the High Court of Australia concerning the compulsory acquisition of land. The claimant sought compensation for the acquisition of its quarrying land, which was resumed by the respondent for the purpose of constructing a public road. The core of the dispute revolved around the assessment of compensation, particularly the value of the land and the claimant's entitlement to compensation for the loss of its business and potential future profits.

The High Court was required to determine several key legal issues. Firstly, it had to ascertain the correct basis for valuing the acquired land, considering its potential for quarrying operations. Secondly, the court needed to decide whether the claimant was entitled to compensation for the loss of its business and the profits it would have derived from quarrying the land. This involved considering the principles of compensation under the relevant legislation, specifically whether such losses fell within the scope of "injurious affection" or were otherwise compensable. Finally, the court had to address the appropriate method for calculating any awarded compensation, taking into account the specific circumstances of the claimant's operations and the nature of the land.

The court's reasoning focused on the principles of compensation for compulsory acquisition. It was held that the value of the land should be assessed on the basis of its most profitable use, which in this instance was its use as a quarry. However, the court distinguished between compensation for the land itself and compensation for the loss of business profits. While the claimant was entitled to compensation for the value of the land and any damage to remaining land (injurious affection), it was not entitled to compensation for the loss of profits from its quarrying business as a separate head of damage. The court applied the principle that compensation is for the loss of property, not for the loss of the opportunity to make profits from that property, unless those profits are reflected in the market value of the land. The court also considered the provisions of the relevant Act regarding compensation for business losses, finding them to be limited.

The High Court ultimately varied the order of the Supreme Court of South Australia. It affirmed the claimant's entitlement to compensation for the value of the land and for injurious affection to the remaining land. However, it disallowed the claim for compensation for the loss of business profits as a distinct item. The matter was remitted to the Supreme Court for reassessment of the compensation in accordance with the principles laid down by the High Court.