Hi White Knight,
From the
depths of Wikipedia, regarding your rhetorical question:
Incendiary use: Magnesium is flammable, burning at a temperature of approximately 2500 K (2200 °C, 4000 °F), and the
autoignition temperature of magnesium is approximately 744 K (473 °C, 883 °F) in air. The extremely high temperature at which magnesium burns makes it a handy tool for starting emergency fires during outdoor recreation.
I hope this helps you on your next Indian Ocean quest!
Tyres exploded, when brakes are on fire, and will be extremely harmful to any pax going near it, with a little fire extinguisher. Stay away and get away from the aircraft is good enough!