Our Projects

Pogo Expansion



Northern Star Resources Limited
Minerals Processing
Alaska, USA

Primero is engaged by Northern Star Resources to implement the Pogo Mine process plant upgrades to increase throughput. The main objective of the Pogo Expansion Project is to:

  • Increase milling capacity stepwise.
  • Improve or hold metallurgical recovery and performance.
  • Provide stability to process flows.
  • Increase the level of automation.
  • Reduce operator intensive duties.


  • Process design validation.
  • Debottlenecking of existing infrastructure (grinding, flotation tail, WTP and ORTW pumps, mill pinion, sag cube and pre-leach thickener control upgrades).
  • Design and installation of:
    • 18m insulated thickener and associated equipment.
    • Plate and frame filter, building and associated equipment.
    • Pre-rougher selective flotation unit and associated equipment.
    • Cement silo storage.
    • Bulk lime storage.
    • Coarse ore overflow storage.
    • Light, small power and HVAC.
  • Civil, structural, mechanical and electrical design as required.
  • Control system design and documentation.
  • Cost estimation.
  • Engineering, procurement and construction management.