The fire broke out on Thursday morning and the National Weather Service issued an emergency message about the sulphuric acid flames. Four persons reportedly went to Mercy Medical Center North Iowa after feeling uneasy with the fumes.
The fire broke out at a fertiliser plant near the Northwood Municipal Airport
It was also reported that several residents heard explosions when the fire started. A major road in Northwood was blocked because of the fire. The police and patrolling officers were present at the scene.
Northwood is home to about 2,000 people.
According to a kwwl.com report, residents who did not have transportation were provided so to Kensett from the sheriff's office at 1,000 Central Avenue in Northwood. For those requiring transportation to the sheriff's office, they were asked to call the sheriff.