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Key Lake Mill Operations

Located 570 kilometres north of Saskatoon by air on the southern rim of the uranium-rich Athabasca Basin

Project Scope

Year: 2012–2013
Client: Cameco Corporation
Project Scope Performed Under: PBN Nuna Contracting Ltd.


The Key Lake mine is a former uranium mine in Saskatchewan and is the site of the largest uranium mill in the world. PBN Nuna Contracting Ltd. commenced work at the Key Lake site in May 2012. Services provided included the following.

  • Excavation and relocation of approximately 2.4 million cubic metres of sand
  • 283,500 cubic metres of waste rock screening and placement for the stabilization of the embankment of the Deilmann Tailings Management Facility (a tailings pond)
  • Numerous road upgrades and realignments, including the decommissioning and installation of several road crossings (culverts)
  • Haul road ditching and check dam construction

The project required the mobilization of approximately 30 pieces of heavy equipment, along with support equipment, buildings, and other facilities to support the PBN Nuna workforce. PBN Nuna demobilized October 2013.