CNN.com - Mine deaths spur call for 'stand-down' - Feb 1, 2006

Two miners died at two Boone County, West Virginia, mines Wednesday, including one man who was driving a bulldozer that struck a gas line and burst into flames, a federal spokesman said.
The bulldozer fatality occurred about 2:30 p.m. south of Charleston at the Elk Run's Black Castle strip mine in Drawdy, said Dirk Fillpot of the U.S. Mine Safety and Health Administration.
CNN.com

In the Tipping Point- by Malcolm Gladwell, the author discusses the tendency of suicides to come in packs- epidemic style. You see the same tendencies in auto accidents. Single car accidents come in packs. Interesting- and wierd.