The combustibles and the remnants of the aircraft are ignited by the burning fuel. Environments include destructible objects and combustibles that generate explosions when damaged. Others would throw combustibles down the ventilation openings and smoke holes. In January 2016, Pemex granted Combustibles Briones, S.A. de C.V. It plows to the building's core, severing all three gypsum-encased stairwells, dragging combustibles with it. Different combustibles can even have a different angle of vision in the same flame detector. These data are typical for a moderate to high combustibles content ash. Combustibles on or near the heater have been known to result in fire. Conspiring to burn houses and barracks, and to provide combustibles for that purpose. A fire ship was a ship filled with combustibles, deliberately set on fire. A tactic that the Romans used were the use of fireships and combustibles. Since Airsoft does not use combustibles for propulsion these usually serve no function. On July 31, 1970, the YFD acquired the Bureau of Combustibles.