Unsaturated soil mechanics and risk assessment for mine waste management

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Acid mine drainage from mine wastes has caused detrimental environmental impacts in Australia and is recognised as one of the largest environmental liabilities facing the mining industry. Mining companies have to lodge hundreds of million dollars in bonds for perpetual treatment of potential environmental impacts. Federal and state regulations require mine wastes being managed in accordance with the 'current best practicable technology', which generally requires the placement of a soil cover over a waste deposit. The outcome of this project can assist the design of cost-effective site rehabilitation plans, which are crucial for sustainable development of the Australian mining industry.