A Blair County man died Saturday afternoon after being pinned under a lawn tractor on Kephart Farm Lane in Tyrone Township. The Blair County Coroner’s Office identified the victim as 59 year old Michael Boone, who died of asphyxiation after the lawn tractor he was riding’ went over an embankment, pinning him under it. AMED, along with the Sinking Valley and Bellwood Fire Departments responded to the scene.