On the morning of Sept. 25, John Paul Jones and Led Zeppelin's road manager Ben Lefevre attempted to stir Bonham but noticed that something was indeed wrong with the drummer. After unsuccessfully searching for a pulse, Lefevre called an ambulance. A sample taken from Bonham's bladder showed an alcohol level of 276 milligrams per hundered milliliters. Bonhams's death was ruled accidental after it was determined that he choked to death. More here