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Diavik Diamond Mines Inc. - Diavik Underground Project


Diavik’s “Underground Project” is the overall project title for work associated with the transition from an open pit to underground operation. There are numerous sub-projects within this major expansion, including:

  • PKC (tailings) dam raises (4 ea @ 5m per)
  • Runoff collection / Sediment Ponds (Sediment Control)
  • Access road and laydown area construction
  • Management of over 12 M m3 of earthworks movement
  • Power Generation expansion (additional 25 MW)
  • Water treatment expansion (45,000 m3/day)
  • Aggregate production facility (600 T/hr)
  • Cemented Backfill facility, includes a 5m ball mill and a thickener
  • Additional 54M liters of diesel storage
  • 240 room accommodation expansion and 700 room reno
  • Mine dry and operations center
  • Site wide power distribution and switching upgrades
  • Underground dewatering stations and maintenance shop
  • Underground electrical distribution
  • Several Mine Air Heater units
  • Fresh air and Return air raise bore shafts

Several of Praetorian’s key differentiators were critical to the success of this project, including cold weather (arctic) construction expertise and detailed materials / construction equipment logistic support due to ice road constraints.


Survey Data Control, Cadd Modeling and Site Mapping: Design and Construction Support

  • Earthwork layout and planning for contractor and client forces
  • Survey data and Cadd Modelling management – collate data from multiple survey groups, overall site map information management, asbuilts, quantity and quality control for contractor payment, and aggregate quantity management.

Value Engineering / Constructability:

  • Process and Infrastructure – Plan equipment installation sequencing within building erection, provide feedback to designers to reduce construction costs
  • Earthworks – adapted site specific materials, characteristics and construction equipment resources into the design. Provide alternate layouts to compare and show the work sequence.

Civil and Earthworks:

  • Estimate and contract support
  • Direction and supervision of work
  • Interface between Owner, Engineer, and Contractor
  • Integrate Mine Ops large material moving capabilities

Heavy Industrial: Full Multi-Discipline Management of Industrial Facilities

  • Foundations and Concrete
  • Structural Steel and Building Envelope
  • Mechanical and Piping
  • Electrical and Instrumentation
  • Commissioning Support

Project Controls:

  • Budget validation
  • Cost and Schedule control
  • Material and Equipment management


Diavik Diamond Mines Ltd.


Diavik Mine Site
Lac De Gras (NWT)

Praetorian's Scope

Project Management, Construction Management, Cost Control, Scheduling, Constructability, Survey Data Management, Survey.


2006 – 2013