I didn’t know that rockwool was still manufactured. Last time I saw it was over 30 years ago pulling it out of the walls of a 50 year old house for a remodel.
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Still available and very good insulation. Roxsul is one brand name. The material has better soundproofing quality than fiberglass and it is both water repellent and fireproof.
Checkout this demo video on a box of chocolate insulated from fire using Roxsul... https://www.youtube.com/watch?v=34SJUQRZGP8
Nobody has yet to describe what “rockwool” is composed from and of.
If it is not an asbestos rock, is it similar in molecular structure (as asbestos is not a metallic material) or how is it different, and safe re particulate matter? Does the Rockwool plant in Mississippi have the latest form of scrubbers and filters (that have to be approved by the EPA under the Clean Air Act)?
Locating any plant like this near a school is not really a good idea. Further out should work for any safety considerations.
We need more information on the subject.
Thank you both for the info on rockwool. I had only seen it in remodels of older structures and presumed that fiberglass had replaced it.