An employee at Fond du lac’s Sadoff Iron and Metal was critically injured after falling at the plant. Fire chief Pete O’Leary tells WFDL news rescue personnel were called to the scene shortly before 5pm Monday. O’Leary says the man fell about 20 feet and landed on his head. The victim was flown by Flight for Life helicopter to the hospital with what were described as life-threatening injuries. The incident remains under investigation.