Crews continued to remove rail cars Tuesday after a train derailment not far from Sussex.
CN said six cars left the track in a wooded area near Dunsinane on Monday afternoon.
No injuries, fires, leaks or spills were reported as a result of the derailment.
A spokesperson said there were four cars remaining on site as of Tuesday afternoon.
Three of those cars were carrying liquid petroleum gas and one was carrying methanol.
CN said rail service is expected to resume on Wednesday afternoon.
The cause of the derailment remains under investigation, the company said.