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Roof collapse halts MOP output at Mosaic facility

  • : Fertilizers
  • 24/11/25

Mosaic halted MOP production at its Colonsay processing facility in Saskatchewan, Canada, after the roof collapsed early last week.

The processing facility is part of Mosaic's larger Colonsay mine site, which has capacity to produce 1.5mn metric tonnes (t) of potash annually. But the mine only produced 600,000t in 2023.

Mosaic said it did not anticipate impacts to its overall fourth quarter sales. No time line was given on when production will come back online. Mosaic is still investigating what caused the collapse.

There were no negative impacts to potash reserves or personnel, according to the company.

In the third quarter, Colonsay's production was reduced because of electrical issues at the mine.


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