Built and operated by Dave King of Controlled Burn in Reno and is associated with the Shiva Vista Project, the fire performance stage surounded by propane cannons @ 7:00 and 600 feet out from Esplanade on open playa.
That is a keroseen shot. It is 5 gallons of keroseen presurized with nitrogen @ 300 psi and fired with an electric solonoid valve mounted to a 1 inch pipe and reduced to 3/8 inch @ the tip. The thing will shoot 5 gallons in 4 seconds and has reached almost 100 feet in height.
It can shoot a variaty of fuels including gasoline, deisel, kero, alcohol, etc... Look for more of these things @ Burningman 2008. Will also be useing colored flames next year and can get green, blue, purple, red, yellow and basic orange.
Photo taken at the Burning Man 2007 festival (Black Rock Desert, Nevada).