re: Danger of sawdust combustion?

Brian, this is, precisely, why I quit vacuuming all the spilled dairy creamer.

Simple searches will reveal explosions to be a significant danger in grain storage bins. However, just sitting, the grain poses no threat. Only when being moved, which caused a lot of dust and chaff to be made airborne, does the danger come about. Even then, the density of the dust in the air will determine the danger.

Throwing a full bag of sawdust in a wood stove poses no danger, but dumping the contents can be nasty. That even applies to dust from metal work.