Fire officials confirm they were called to the scene of a magnesium fire at MagReTech on Friday night.
Just a few months ago, in March, a similar fire started at the Sandusky County facility following a lightening strike.
In this case, a cause is not clear.
As of 11 p.m. there had been no evacuations because of the burning magnesium.
A truck driver was injured but refused treatment at the scene.