You are on the right board, but if you want people to help you more specifically, give your grandfather's name.
You can search the Kentucky death index herehttp://vitals.rootsweb.ancestry.com/ky/death/search.cgi
Then you can post the exact date of his death. Or, you can request his death certificate from the state, which should give you location and cause of death.
For news accounts, you can contact the local public library for that town, and ask if they will do a lookup of his obit or account of the accident- his exact death date will be necessary for that.