The Princeton Fire Department kept a close eye on a business on Old Hedley Road, Thursday, after a loader fire earlier in the day.
Fire Chief Eric Gregson said a 930 cat loader burned at around noon, prompting the fire watch at the Princeton Co-Gen Corp-Pellet Plant.
"We were just keeping a watch on the whole building after that, because of the contents," he said.
Manager Richard White said the main concern was there could be a secondary fire because there is sawdust and shavings packed in the yard.
He describes the loss of the loader as an unfortunate incident.
It is also somewhat of a hardship.
"It will be expensive to replace but not the end of the world," he said.
The fire chief said the blaze was not suspicious and the cause remains under investigation.