[cr0sh]

Something to throw out:

Do the manufacturers of this chalk (or any chalk) regularly test for asbestos contamination?

From what I understand, it is kinda the same safety hazard you'd have with cosmetic uses of talc (for makeup and the like); the risk is low for contamination, but it is possible - which is why they do testing on talc (and even then, there is still the possibility of it being present in very, very low amounts).

I'm just wondering if the same applies to chalk?