4 ms·
"The FDA has posted their latest analysis of J&J talcum powder.[1] Of the 3 samples, 1 had "none detected" and 2 had 0.00002% or less by TEM (electron microscop
by lightedman 7y ago
"The FDA has posted their latest analysis of J&J talcum powder.[1] Of the 3 samples, 1 had "none detected" and 2 had 0.00002% or less by TEM (electron microscope). We're talking close to limit of detection."
I do a bunch of mining and know the dangers of talc and its contaminants - it only takes ONE PARTICLE of tremolite or actinolite to start you on the road to mesothelioma. You just don't know which specific particle will trigger it.
- gwern 7y ago> it only takes ONE PARTICLE of tremolite or actinolite to start you on the road to mesothelioma. A completely unhelpful thing to say. Everything starts somewhere, there's nothing special about asbestos. 'It only takes ONE GAMMA RAY PARTICLE to start you on the road to terminal brain cancer' too, but does that mean you shouldn't live in Denver or ever take an airplane flight?
- refurb 7y agoOSHA says.... Permissible Exposure Limit (PEL) for asbestos is 0.1 fiber per cubic centimeter of air as an eight-hour time-weighted average (TWA), with an excursion limit (EL) of 1.0 asbestos fibers per cubic centimeter over a 30-minute period. The employer must ensure that no one is exposed above these limits.
- perl4ever 7y agoThere's no such thing as 0.1 fiber. A small fiber is still one fiber.
- lightedman 7y agoThis is correct. A single asbestiform fiber can trigger mesothelioma. There is NO SAFE EXPOSURE LEVEL. Perhaps HN readers will understand that once they bother to get a career in surficial mineralogy.
- perl4ever 7y agoA single butterfly can also trigger a hurricane. Therefore we must eliminate the Karner Blue[1] to save the planet. [1]https://en.wikipedia.org/wiki/Karner_blue https://en.wikipedia.org/wiki/Karner_blue