Sanrus Pty Ltd v Monto Coal 2 Pty Ltd (No 2)

In the matter of Sanrus Pty Ltd v Monto Coal 2 Pty Ltd (No 2), the case before the court involved complaints from a junior joint venture partner, Sanrus, regarding the conduct of the senior joint venture partner, Monto Coal 2, in decisions made during the joint venture for coal deposit exploitation. The primary issue was whether the plaintiffs, Sanrus, should be granted leave to rely on additional expert evidence at trial. This request came on day 31 of a protracted and complex trial, just before the expert conclaves and joint expert reports process was to commence. The plaintiffs had previously been granted significant leeway in amending their case based on new expert evidence shortly before the trial began, which had placed a considerable burden on the defendants.

The court had to decide whether the plaintiffs should be granted leave to adduce new expert evidence, considering the substantial indulgence they had previously enjoyed in amending their case. The court held that the plaintiffs must be taken as having made a forensic decision regarding the case they would take to trial at the time the amendment was permitted. Allowing the plaintiffs to introduce new expert evidence would prejudice the defendants, who had already been burdened by the earlier amendment. The court also noted that the plaintiffs had not demonstrated any exceptional circumstances that warranted further indulgence.

In conclusion, the court found that the plaintiffs should not be granted leave to rely on additional expert evidence at trial. The decision was based on the significant indulgence already granted to the plaintiffs and the prejudice it would cause to the defendants. The court ordered that the plaintiffs were not permitted to rely on the new expert evidence at trial.