Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Do teachers get any diseases from inhaling chalk dust every day?
Because I have a teacher who is a devout chalkboard enthusiast. But every time he erases the board there is a rather large chalk cloud and he has a rather bad cough.
3 Answers
- yashLv 41 decade agoFavorite Answer
For him to have problems :
INHALATION: (Silica, Crystalline-Quartz)
Human: LCLo: 300 μg/m3 intermittent exposure over a 10-year period produced
pulmonary system effects.
- Anonymous6 years ago
hard issue. look into with google. that will help!
- Anonymous1 decade ago
may be lung infection