Emergency crews are keeping an eye on the site of a large fire and explosion at a welding supply company in Washtenaw county.
The Pittsfield Township public safety director says crews stayed on scene last night and into today as one fuel tank continued to burn.
They plan to let it burn itself out.
The fire at Ann Arbor welding supply began yesterday when a worker filling a propane tank turned away for a moment and the tank exploded.
Despite the explosion and fire only two employees were treated for breathing in smoke from the flames.
No one else was reported injured.