Rio Tinto Ltd v Commissioner of Taxation

Rio Tinto Ltd and its subsidiaries, Hamersley Iron Pty Ltd and Argyle Diamonds Pty Ltd, were involved in a tax dispute with the Commissioner of Taxation. The matter pertained to the discovery of documents, the verification of a list of documents, and the propriety of masking parts of documents. The case was heard in the Federal Court of Australia. The central legal issues revolved around the ability of an officer of the parent company, Rio Tinto Ltd, to verify a list of documents on behalf of its wholly owned subsidiaries, Hamersley Iron Pty Ltd and Argyle Diamonds Pty Ltd. Additionally, the case addressed the implications of a court order in one proceeding that required the filing of a list of documents, and whether this obligation extended to each applicant in related proceedings. Another issue was the propriety of the discovering party masking parts of documents on the ground of irrelevance.

The court examined whether Mr Consedine, an officer of Rio Tinto Ltd, could appropriately verify the list of documents on behalf of the subsidiaries. The court considered the adequacy of Mr Consedine’s verification, noting concerns about the brevity and lack of detail in his affidavit regarding his knowledge and inquiries prior to verifying the list. The Commissioner argued that Mr Consedine’s affidavit raised doubts about his personal knowledge and the inquiries he conducted. The court also addressed the issue of masking parts of documents by the discovering party, arguing that this was done on the basis of irrelevance. The court concluded that the matter would be deferred along with related issues such as legal professional privilege.

In summary, the court deliberated on the capacity of an officer of a parent company to verify a list of documents for its subsidiaries, the adequacy of the verification, and the propriety of masking parts of documents. The court noted that further submissions would be required to resolve these issues fully. The parties were instructed to prepare minutes reflecting these reasons and to file any submissions on costs by a specified date.