drowning, suffocation in wells, railway trains, electric cars, burning, suffocation at fires, runaway teams [of horses/mules, etc.], cave-in at mines, electric shock, attacks by enraged animals, attempted murder, falls, death by exposure, explosions, mad dogs, death by machinery, snake bites, contagious diseases, etc.
Examples of the risks braved by nominees of the Carnegie Hero Award.
Annual Report, Carnegie Hero Fund Commission (1917)
Charles Ponzi (Of Ponzi Scheme infamy) was also nominated for a Carnegie Award for donating over 100 sq. inches of skin from his back for a burn victim in 1911.