Overview

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.

Services

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