Mine Closure - Feasibility Study

Western Australia

Calibre has recently completed a Feasibility Study for the closure of an Underground Mine (UM) in July 2020. Outcomes of the Feasibility Study have contributed to a detailed plan for the closure of the UM to facilitate the relinquishment of the site. Calibre has since been engaged as the integrated delivery partner to deliver the UM Execution Project based on the completed Feasibility Study.

Closure execution activities reviewed during the Feasibility Study include but are not limited to the key activities outlined below:

  • Demolition of all process and non-process infrastructure including disposal of demolition waste either offsite or in onsite landfill.
  • Waste rock dump (WRD) landform earthworks.
  • Tailings storage facility (TSF) landform earthworks.
  • Landform earthworks throughout the disturbed footprint of the site.
  • Investigation and remediation of contaminated sites.
  • Installation of seepage management infrastructure for the WRD and TSF.
  • Seed collection and production of tube stock.
  • Seed spreading.
  • Infill planting.

Project solution

The overarching scope of the Calibre services was to provide engineering and management services within an integrated team for the Feasibility Study. Calibre’s delivery team included staff for the following:

  • Project Services: Estimating, Scheduling, cost management, contracts management, contracts administration and administration.
  • Civil Engineering and Design: Support including the development of 3D Contract models.
  • Environmental Disciplines: Contaminated sites, revegetation, and disturbed area management.



Key Services:

Specialist Services:

  • Mine Closure


Jacqui Davitt



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