Here's a question for the Geordies, Makems and Sand Dancers:

What do the locals call coal dust - colloquially?

Other UK regions are avaliable - to participate. TIA.

I asked a true knowledgeable Geordie and he did not know.
It involves a joke I will put on the joke thread just to wind up certain "opinions" & that will maybe evoke more comment on regional words. see the Joke