(Medina, ND) -- A North Dakota man who spent decades working as a firefighter is the inventor of a new kind of equipment to fight oil fires. Darrell Graf has applied for a patent for foam cannons he built in response to two major oil train derailments. A derailment in a tiny Quebec town last July killed 47 people while last December's derailment near Casselton, North Dakota caused a huge fireball and forced a city-wide evacuation. Graf's Foam Cannon 2000 uses a chemical foam that cuts off fuel vapors and can shoot up to 300 feet. Graf hopes his invention will reduce the fear people living along oil train routes have about such derailments. He also wants to better equip fire departments to deal with such disasters.