The three had been pumping water out of a mine while searching for gold when they were overcome by carbon monoxide from the generator.
Mine Deaths Caused by Carbon Monoxide Poisoning
5/20/2008 Fresno, CA The bodies of brothers David and Matthew Alison from Prather and their cousin, Brannon Scharf of Madera, were discovered in an abandoned gold mine in O'Neals late Saturday night.