What is crystalline silica and asbestos exactly and where else can it be found?
Dr. Roy’s Answer: You bring up a good question of why there is a labeling requirement for the sand in the store and not in the public park – logically, this would make sense. The reason is because products being sold are under different regulations. They are required to include information about any possible hazards. After that point, when those products are being used in a public space, the responsibility shifts. Each state, for example, has to decide what is safe for use in public spaces and what is required to be labeled. Comparable examples might be fertilizer use in a public park or chlorine used to clean public pools. The chemicals themselves have hazard information on the packaging, but signs are not placed any time a potentially hazardous chemical has been used. The question of “normal use” is also a good one. It is of course a very general term, and I don’t know what is meant by that specifically. I can say, though, that eating the sand does not put you at higher risk from the
