The OSHA Respiratory Protection Standard ("the Standard"; 29 CFR 1910.134) uses 19.5 percent oxygen as the level below which an oxygen-deficient atmosphere exists and requires, generally, that all oxygen-deficient atmospheres be considered immediately dangerous to life or health ("oxygen-deficient IDLH")
I own an oxygen meter and have a full beard...with a mask even on my bearded face the oxygen levels reduced to 16.5%, now why would OSHA allow such a grave violation to exist for even 10 minutes nevermind 8+ hours per day ?!?
even a Google search confirms it
https://www.google.com/search?client=firefox-b-1-e&q=osha+standards+for+oxygen+levels
The OSHA Respiratory Protection Standard ("the Standard"; 29 CFR 1910.134) uses 19.5 percent oxygen as the level below which an oxygen-deficient atmosphere exists and requires, generally, that all oxygen-deficient atmospheres be considered immediately dangerous to life or health ("oxygen-deficient IDLH")
I own an oxygen meter and have a full beard...with a mask even on my bearded face the oxygen levels reduced to 16.5%, now why would OSHA allow such a grave violation to exist for even 10 minutes nevermind 8+ hours per day ?!?