Commercial Minerals Ltd v Harris

Commercial Minerals Ltd appealed to the New South Wales Court of Appeal against a judgment of the Supreme Court of New South Wales awarding damages to the respondent, Mr Harris, for personal injury. Mr Harris had contracted progressive massive fibrosis (PMF) as a result of his employment with the appellant and other employers. The dispute concerned the assessment of damages, specifically whether PMF constituted a separate injury from silicosis, the appropriateness of separate awards for silicosis, and the inclusion of future medical expenses and pension payments in the damages award.

The Court of Appeal was required to determine several key legal issues. Firstly, it had to consider whether the finding that progressive massive fibrosis was a separate injury from silicosis was open to the trial judge. Secondly, the Court had to decide whether it was within the trial judge's discretion to make separate awards for silicosis. Thirdly, the Court was asked to review whether an award for future medical expenses was permissible and, if so, whether an additional allowance for future pension payments should be deducted from this award.

The Court of Appeal allowed the appeals. The reasoning focused on the principles of assessing damages for progressive diseases and the proper calculation of future economic loss. The Court held that the trial judge had erred in making separate awards for silicosis and in the assessment of future economic loss, particularly concerning the deduction of pension payments. The legal principles applied related to the apportionment of damages between successive tortfeasors and the correct approach to calculating compensation for future medical expenses and lost earning capacity in cases of occupational disease.

Consequently, the Court of Appeal set aside the original judgment and remitted the matter for re-assessment of damages in accordance with the Court's reasons.