Mammoet and Ledcor Complete Heavy-Lift Headframe Work at BHP's Jansen Potash Mine
According to International Mining, heavy-lift specialist Mammoet has completed a headframe expansion project at BHP’s Jansen potash mine in Saskatchewan, working alongside general contractor Ledcor ahead of the mine’s planned 2027 production start.
Scale of the Work
Jansen is slated to become one of the largest potash mines in the world, targeting production of approximately 8.5 million tonnes per year at full capacity. The headframe scope involved removing the lower section of an existing headframe and replacing it with a larger unit to increase mining capacity. Mammoet also handled the lifting of a staircase tower module inside the building where it was being installed.
Modules for both the headframe and staircase tower were prefabricated in Edmonton, Alberta, then transported to site on platform trailers fitted with transport beams. The remote Saskatchewan location made modular construction the practical choice, allowing components to be built in parallel and limiting the number of workers and equipment needed on site at any one time.
The job was not without complications. Mammoet Project Manager Mike de Wilde noted that routing oversized loads through predominantly agricultural roads required careful overnight staging, since the trucks were too large for standard layby areas. Spring ground conditions added another layer of difficulty. The team conducted ground-loading tests using self-propelled modular transporters (SPMTs) carrying counterweights, which led to the mobilization of more than 400 crane mats and ground reinforcement work near the shaft opening.
Mammoet’s history with Jansen goes back to 2013, when the original headframe was built.
What It Means for Subcontractors
- Jansen’s 2027 production target means the Saskatchewan construction push is not a future story. It’s happening now. Subcontractors in heavy civil, electrical, mechanical, and rigging trades should be positioning for upcoming scopes.
- Modular prefabrication, sourced out of Edmonton, drove significant work volume in Alberta before a single lift happened on site. Fab shops and specialty manufacturers in the region should be aware that major mining projects in remote locations increasingly push work upstream to urban centers.
- Ground conditions and load path planning were critical enough to require 400-plus crane mats and dedicated load testing. Subcontractors bidding remote Saskatchewan work need to budget for geotechnical surprises, especially on spring schedules.
- Ledcor served as the primary contractor with Mammoet in a specialist support role. For smaller subcontractors, this project structure highlights the value of building relationships with both large general contractors and heavy-lift firms that carry significant project influence.
