where to find road dust/limestone/gravel dust?
I need road dust/stone dust/whatever you call it for a base for rubber mats. My neighbor contractor and my handyman both know what I'm talking about (or I think they do), but they have called multiple people and no one knows where to get it. My handyman says it's the same stuff that they use as a base for roads... is that correct? I assume so, as I've heard it called "road dust" before.
Can someone help me out? Would a stone quarry be the best, even for a small amount (just one stall's worth)?
And what exactly is it called? I want to make sure I get the correct stuff, and I've seen it called multiple things on these threads.