This tool helps companies organise information into domains. Domains consider the mine site as a collection of specific areas with related characteristics. The information for each area or domain should include its status, historical information, technical information and local and traditional knowledge.

Tool: Monitoring, Measurement and Inspections will help with collecting the information to be added to the knowledge base (p15). This information is used to inform the closure execution plan and closure planning process – identifying uncertainties, and using studies, research and trials to close knowledge gaps.

Step Guide


Download the set of templates (p73) to be used when developing a plan for each domain


Separate the mine into specific areas or domains – treating each as a detailed entity within an overall plan


Ensure each domain has its own plan – include all assumptions, inclusion and exclusions throughout the mine’s operational life


Use GIS digital terrain models and aerial photos to illustrate domain features and boundaries. 3D models of voids and mine waste facilities are also useful

The following factors should be considered for step 2:

  • The amount and area of disturbance
  • Applicable legislation
  • Hazardous areas and risk assessments
  • A plan for deconstruction and decommissioning
  • Contamination and mitigation
  • Post closure land use
  • Required earthworks and capping
  • Control of erosion
  • A rehabilitation plan
  • Monitoring
  • Cost estimates
  • Research

Examples of domains:

Mine voids

  • Open pits
  • Underground mine workings

Mine waste facilities

  • Tailings facilities
  • Waste rock facilities
  • Heap leach facilities
  • Slag and process residues


  • Buildings
  • Roads
  • Pipelines, power lines
  • Fuel Storage facilities
  • Water management infrastructure (including process and raw water facilities)