The Mosaic Company has confirmed there was a small underground fire at the K2 potash facility at Esterhazy around 12 a.m. on Saturday.
All the workers have now been safely brought to the surface, according to Mosaic.
In a statement to CTV News, Mosaic said 55 employees waited in refuge stations while air monitoring was done, before the workers could come back up. Around 8 p.m. on Saturday, spokesperson with Mosaic Sarah Fedorchuk said the last of the "employees had made it to surface."
The underground refuge stations are spaces that are easily shut off from the rest of the mine where there is water and other items for employees.
Mosaic adds there have been no significant damages and expected K2 to be able to resume operations once people were on the surface.
