One of their sulphur cars caught fire on its route, and that was the best location for the two to meet, especially to avoid the ensuing odour from reaching town.

The burning car was the closest one to the engine, and crews suspected that when there was a backfire, something came out of the exhaust and ended up in the sulphur car.

Burrows says the Fire Department has dealt with several sulphur car fires before in rail yards, particularly when Canfor had a beehive burner that would ignite cars lined up nearby.

In total, it took firefighters a couple of hours to fully extinguish the fire, during which time traffic was diverted.