Attorney-General v Copper Mines of Tasmania Pty Ltd

The Attorney-General, on behalf of the State of Tasmania, sought judicial review of a decision made by a Coroner during an inquest into the death of a worker at a mine operated by Copper Mines of Tasmania Pty Ltd. The dispute concerned the Coroner's admission of certain evidence during the inquest, which the Attorney-General argued was improperly admitted and breached the duty of procedural fairness owed to the deceased worker's family.

The central legal issue before the court was whether the Coroner had erred in admitting evidence that comprised a mixture of expert and lay opinion. Specifically, the court had to determine if this mixed evidence was admissible in coronial proceedings and, if not, whether its admission constituted a breach of the duty of procedural fairness owed to the interested parties, particularly the family of the deceased.

The court reasoned that coronial inquests are inquisitorial in nature and are not bound by strict rules of evidence applicable in criminal or civil trials. However, the Coroner still has a duty to act fairly. The court held that while coroners have a broad discretion to admit evidence, this discretion must be exercised reasonably and in accordance with the principles of procedural fairness. The admission of evidence that was partly expert and partly lay opinion, without proper distinction or consideration of its weight, could potentially lead to unfairness if it was given undue prominence or relied upon without proper scrutiny. The court considered the nature of the evidence and the potential prejudice it might cause to the parties involved.

The court found that the Coroner had indeed erred in admitting the mixed evidence without sufficient consideration of its admissibility and potential impact on the fairness of the proceedings. Consequently, the court quashed the Coroner's findings and remitted the matter for a new inquest to be conducted.