 Rio Tinto Coal Australia managed the operation on behalf of the joint venture partners – Rio Tinto (57.2 per cent), Leichhardt Coal Pty Ltd, owned by UniSuper, Rio Tinto and J-Power (31.4 per cent), and Japanese power utilities EPDC Australia Pty Ltd (8 per cent) and JCD Australia Pty Ltd (3.4 per cent).The former mine site will take up to 6 years to rehabilitate, when Rio tinto will get a $84 million bond back.In January 2007, Rio Tinto Coal Australia announced the development of the $950 million, 190 million tonne thermal coal deposit in Clermont.