The tragic incident occurred at Aspen Grove Family Camp in Provo Canyon, Utah, on Friday, where Nathaniel and his boys were helping to clear the snow.
Herman's nine-year-old brother, who was also in the cab at the time, was unhurt.
The father attempted to give CPR until paramedics arrived, but there was nothing they could do when they did, and the boy was pronounced dead at the scene.
His body was taken to a medical examiner's office for an autopsy; but according to Utah County Sheriff's Sgt. Spencer Cannon, officials "don't expect any information from the autopsy that we don't already know from our investigation at the scene."