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**

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

Original Articles

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

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**> wrote:


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
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