Mine Subsidence Board v Maria Vervoon

The Mine Subsidence Board appealed to the Court of Appeal of New South Wales against a decision of the Land and Environment Court concerning the extent of damage to Maria Vervoon's property caused by mine subsidence. Ms Vervoon also cross-appealed. The primary dispute concerned the assessment of compensation for damage to Ms Vervoon's property and for rent, with the Board arguing that the trial judge failed to adequately consider expert evidence critical to its case, while Ms Vervoon contended the assessment was unreasonable.

The central legal issues before the Court of Appeal were whether the trial judge erred in his assessment of the damage and compensation by failing to give adequate reasons for his findings, particularly in relation to expert evidence that the Board considered critical. The court also had to consider the consequences of counsel's failure at trial to cross-examine opposing experts on evidence that was later argued to be critical to the Board's case, and whether the omission of such matters from a joint expert report indicated they were not considered critical.

The Court of Appeal found that while the trial judge had considered the expert evidence, he had failed to provide sufficient reasons for his assessment of the damage and the apportionment of compensation. The court noted that the failure of the Board's counsel to cross-examine the respondent's experts on matters now asserted as critical weakened the Board's argument that this evidence was indeed critical. However, the court also acknowledged that the trial judge's reasons were insufficient to allow for a proper understanding of how the compensation was determined.

Consequently, the appeal by the Mine Subsidence Board was dismissed, but the cross-appeal by Ms Vervoon was allowed in part. The matter was remitted to the Land and Environment Court for redetermination of the compensation to which Ms Vervoon was entitled for property damage and rent, as well as the costs of the original hearing. The Mine Subsidence Board was ordered to pay Ms Vervoon's costs of the appeal and cross-appeal.