Earthquake rattles Mosaic's Esterhazy potash mine in Saskatchewan

A magnitude 3.4 earthquake struck about nine kilometres east-northeast of Esterhazy, Saskatchewan, at 7:04 a.m. local time on Tuesday, and workers felt the tremor in a mined-out section of Mosaic’s K3 underground potash mine. Mosaic said all employees were accounted for, safety inspections were complete, and the event, which Earthquakes Canada classified as a suspected mining-induced event, is not expected to disrupt production at the 7.8 million tonne a year complex.

The tremor arrived with a weak quarter for the same operation. Mosaic reported a third-quarter net loss of $72 million, against net income of $411 million a year earlier, on revenue down about 10 percent to $3.1 billion, and said lower ore grades at Esterhazy had reduced output and prompted it to cut its 2026 potash production forecast to 8.6 million tonnes, while holding a longer-term target above 9 million tonnes.