The gas apparently ignited when it came in contact with the shed's propane space heater, according to the board.

"Because gas ignites more easily than diesel fuel," Pitt explained.

The gas ignited and with a whoosh a huge ball of flame exploded through the living room.

This forms a volatile gas that can be exhaled at will and ignites upon contact with air.

When gas ignites due to compression, knocking occurs within the engine.

The oil and gas blowing out of the well ignited, causing the platform to catch fire.

Within two minutes of the initial explosion, the gas ignited, and flames soared 500 feet into the air.

The released gas then ignited, set to flame by the play of energies here.

During the sinking of the bore, two men were killed when the gas ignited and exploded.

The escaping gas quickly ignited and the heat could be felt almost a mile away.