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Subject: Re: [DCHAS-L] Exxtremely Cool Visual (not simulation) of Exhalation Streams
Date: Saturday, December 12, 2020 at 12:30:34 AM
Author: Debra M Decker <00001204b93f9a5e-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU> 		Next by Date:
Subject: Re: [DCHAS-L] NIOSH Technical Report P/N 2021-107: Filtering Facepiece Respirators with an Exhalation Valve: Measurements of Filtration Efficiency to Evaluate Their Potential for Source Control
Date: Sat, 12 Dec 2020 12:08:31 +0000
Author: Monona Rossol

From: "Glover, Sam (glovers)" <glovers**At_Symbol_Here**UCMAIL.UC.EDU>
Subject: Re: [DCHAS-L] NIOSH Technical Report P/N 2021-107: Filtering Facepiece Respirators with an Exhalation Valve: Measurements of Filtration Efficiency to Evaluate Their Potential for Source Control
Date: Sat, 12 Dec 2020 11:03:03 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: 0C5CDE0E-6B93-4E8C-878B-080EB1B0533A**At_Symbol_Here**ucmail.uc.edu
In-Reply-To


Another article in the press by NIOSH this week on the issue of efficacy of face masks, gators and face shields includes:

https://www.tandfonline.com/doi/abs/10.1080/02786826.2020.1862409?journalCode=uast20

Original Articles

Efficacy of face masks, neck gaiters and face shields for reducing the expulsion of simulated cough-generated aerosols

William G. Lindsley ORCID Icon, Francoise M. Blachere ORCID Icon, Brandon F. Law ORCID Icon, Donald H. Beezhold ORCID Icon & John D. Noti ORCID Icon
Received 02 Nov 2020, Accepted 07 Dec 2020, Accepted author version posted online: 11 Dec 2020

Sent from my iPad

On Dec 12, 2020, at 5:46 AM, John Callen <jbcallen**At_Symbol_Here**gmail.com> wrote:

?
ALL,

The subject study is "hot-off-the-press" and is worthy of your consideration.


This summary has PDF Link so you can read the entire report (attached below).


The Bottom Line : "These finds have important implications for guidance on source control and mitigation."

It maybe possible that this will open up a blocked avenue of RPE.

After review, I certainly welcome your comments.

Be Safe and Stay Healthy!

All My Best and Happy Holidays,

John B. Callen, Ph.D.
3M Personal Safety Division - Retired
ACS/DCHAS Founding Member
(312) 632-0195
--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas

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