On Dec 17, 10:21*pm, "Mr Pounder"
wrote:

Tell me, which extinguisher did you use to extinguish a magnesium fire?

It's a Class D (burning metal) fire, so you can't.

The US Navy have two techniques for class D fires: the first is to use
"Purple K", a dry powder, but not the usual dry powder. This doesn't
work (we demonstrated this). Their second technique is to throw
whatever is burning (up to and including whole aircraft) into the
Pacific.