OZ Minerals
Sustainability Report 2011

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• Values and ethics
• Corporate governance
• Structure and responsibilities
• Sustainability policy
• Sustainability management standards
• Compliance
• Risk management
• Audits
• Transport of Prominent Hill concentrates
• Closure planning

Closure
planning

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Closure planning is a consideration during all stages of operations. It is OZ Minerals’ intention that through careful and proactive planning the social and environmental impacts of eventual mine closure are mitigated. Our Social Closure Standard and Environment Rehabilitation and Closure Planning Standard aim to ensure that the potential closure and post-closure risks and opportunities are effectively identified and managed throughout the mining life cycle.

The potential impacts of closure are an ongoing consideration in our engagement with governments and local communities and our support for community development activities, including development of local businesses not related to mining activities.

The Prominent Hill operation has developed a Life of Mine Working Closure Plan and Mining and Rehabilitation Program (MARP), which outlines closure planning for the site. The Closure Plan is reviewed annually and independently audited every second year in accordance with our internal accounting policy.

In 2011, we began rehabilitation trials in preparation for closure of some mine areas. These trials are being developed in reference to the MARP.

Provisions are made for the estimated cost of rehabilitation, decommissioning and restoration relating to areas disturbed during the mine’s operations. Further details on provisions, including labour transitions, amount and type of financial provision and stakeholder engagement processes, are available in the 2011 Annual Report.