Fire crews had requested the Environment Agency to attend the fire at a building on Collaton Lane in Tavistock, to help control a diesel spillage.
Western Power has also been at the site and disconnected the electricity to help make it safe.
At 0700, a cordon has been put around the area and fire crews were monitoring the incident from a safe distance because of the volatile nature of acetylene cylinders.
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Autumn has barely begun and yet some people are already thinking about the festive season.
There will be some light drizzle with a mostly dry night with patches of cloud. There will be some winds but they shouldn't be too strong.
It will be a dry night with some scattered cloud and mostly light winds.