Mine Closure Experience

Calibre is one of the few companies that can provide your project with a full lifecycle solution including, coordination of SME’s, engineering, full scheduling, procurement planning, site execution, HSE management.

Honouring the Argyle Story, Closing with Pride

Argyle Diamond Mine

Calibre were engaged to provide engineering and management services within an integrated team for the Argyle Feasibility study.

We have FS and have been successfully awarded the Execution scope.

Our 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 development of 3D Contract models

Environmental Disciplines - Contaminated Sites, Revegetation and disturbed area management

The team were key leaders in the delivery of the study that was completed on-time and under budget.


Overall, approximately $180 million cost-saving

22% Reduction from PES to DES through innovative design solutions and delivery strategies.

Argyle Diamond Mine
Argyle Mine Rehabilitation Extents

Challenging thinking and transparent communication

Channar and Eastern Range

Calibre were engaged to provide engineering and management services (PES scope) for the Channar and Eastern Range Mine Closure PFS.

The PES has challenged many of the original OoM concepts and has added further definition to formulate an optimal business case for closure.


Impressive 3D landform design

Innovative design solutions and delivery strategies

Channar and Eastern Range
Abandonment Bunds and Water Management

Other Closure Project Experience (last 5 years)

  • Hope Downs 1
  • Mesa A
  • Worley Alumina Refinery