Long Term Foods

On a chefs forum: signed in as texastalking with 60133ed as paswA coworker insisted that his family has boiled eggs for years (can't recall; possibly 15 minutes) which turned them green in color but allowed them to be kept as long as desired; possibly never spoiled. I am certain it is true because he is quite honest. Does anyone know the time required? Another forum had a commnet that her inlaws normally ate Easter eggs after a full year with room temprature strage. Ed fly7786@aol.com