Thyssen Mining’s 8 m raises at BHP’s Jansen: design and hoisting notes for engineers
Reviewed by Joe Ashwell
First reported on International Mining – News
30 Second Briefing
Thyssen Mining has completed two 8 m diameter raise bore excavations at BHP’s Jansen potash mine in Saskatchewan, working with TRL Mining Construction LP to construct twin raises for an underground raw ore storage bin. The twin 8 m raises set a new raise bore record for Thyssen Mining and form the core vertical infrastructure for the bin system. The project signals growing confidence in large-diameter raise boring for bulk materials handling in deep potash operations.
Technical Brief
- Raise boring was executed by Thyssen Mining’s dedicated raise bore team in partnership with TRL Mining Construction LP.
- Twin raises are directly integrated into an underground raw ore storage bin arrangement for bulk handling.
- Geometry of the twin raises enables a bin system rather than traditional silo or bunker-style storage.
- Collaboration structure suggests Thyssen focused on raise boring while TRL Mining Construction handled associated construction works.
- Record-scale raises at Jansen provide a reference case for large-diameter raise boring in potash strata.
Our Take
In our database of 1181 Mining stories, BHP appears far more often in iron ore and copper coverage than in potash, so the Jansen potash mine in Saskatchewan represents a diversification play where execution benchmarks like record‑scale raise boring will be closely watched.
The 8 m diameter twin raises at Jansen signal that BHP is designing for very high‑capacity material handling, which is consistent with its approach on large iron ore operations referenced in the recent Boton conveyor collaboration piece dated 2026‑06‑05.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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