Pella Regional Health Center spokeswoman Billie Rhamy confirmed Thursday evening injuries were minor and all patients had been discharged.
The factory, which has about 2,800 employees manufacturing industrial and agricultural equipment, was hit by a tornado around 4 p.m.
Vice President of Operations Vince Newendorp says the east half of the company’s campus, which includes seven manufacturing buildings, sustained extensive damage.
He says the plant activated its storm warning system and workers were in shelters when the storm hit.