09/13/2019 – MASK “SMOKING GUN” - 3M video on Face Masks vs Respirators - Limitations & Differences

*** September 13, 2019 – “SMOKING GUN” - 3M video specifically detailing the differences, limitations, and dangers of Face Masks versus Respirators – published on Tech ARP YouTube’s Channel.  – Link:  https://youtu.be/Gdsy_sZnBZg