Industrial Hygienist Stephen Petty on the efficacy of masks
Loading 2 comments...
-
15:49
YourselfRefined
6 months agoINDUSTRIAL HYGIENE EXPERT STEPHEN PETTY ON THE EFFECTIVENESS OF MASKS
271 -
15:50
DaveHutcho
1 year agoStephen Petty on the Effectiveness of Masks
15 -
1:23:56
RebuildNH
2 months agoTestimony: Industrial Hygienist Stephen Petty
37 -
1:23:56
The Soon to be World Famous Grok Media Channel
2 months agoIndustrial Hygienist Stephen Perry on Masks, PPE, and COVID
3871 -
3:15
WKBW
2 years agoHealth experts say masks do work
761 -
0:48
Newsy
2 years agoResearchers Test Whether Cloth Masks Or Surgical Masks Are Best
1.38K22 -
1:16
KIVI
4 years agoISP employee sews face masks for medical professionals
14 -
3:00
AMERICANDREAM09 with 17PLUS
9 months agoIndustrial hygienist breaks down masks. You want an expert opinion? 17PLUS 17PLUS.WEEBLY.COM
5401 -
0:25
KTNV
3 years agoWhich DIY masks are most effective?
84 -
2:31
WCPO
4 years agoFDA expands approval for N95 mask disinfecting technology
11