From: "Wright, Mike" <mwright**At_Symbol_Here**USW.ORG>
Subject: Re: [DCHAS-L] cloth face masks
Date: Thu, 4 Jun 2020 21:45:06 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: 131c422e8b2a43d79da4cca3cec63224**At_Symbol_Here**usw.org
In-Reply-To <004701d63aa3$60635090$2129f1b0$**At_Symbol_Here**bellsouth.net>


We've looked at this for workers doing hot work - welding, flame cutting, etc. We don't want people in flammable masks, but we don't want them in FR masks either. Flame retardant fabrics are chemically treated. Some of those chemicals are toxic; none of them have been sufficiently characterized. Flame resistant fabrics are made from fibers that are inherently resistant to combustion, but they tend to be woven very tightly, so inhaled and exhaled breath doesn't go through the mask, but around it, pretty much defeating the purpose.

 

I agree with Zack. Wear the PPE appropriate to the job. Other than that, distance works better than any cloth mask. And don't stop at 6 feet. If you can achieve more, do it.

 

 

 

Michael J. Wright

Director of Health, Safety and Environment

United Steelworkers

 

412-562-2580 office

412-370-0105 cell

 

"My friends, love is better than anger. Hope is better than fear. Optimism is better than despair. So let us be loving, hopeful and optimistic. And we'll change the world."

                                                                                                                                                                                         Jack Layton

 

 

 

 

From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU] On Behalf Of Zack Mansdorf
Sent: Thursday, June 04, 2020 3:07 PM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: Re: [DCHAS-L] cloth face masks

 

This has become an incredible circular discussion that I believe will be never ending.

 

If you are doing lab work that requires a respirator, use the correct respirator.  If you are doing lab work that does not require a respirator (e.g., in a hood), then use common sense.  If a face covering is more of a risk than not wearing a face covering (e.g., flammability, corrosivity, vision, etc.) than do not use a face covering and just maintain a 6 foot separation from other persons.  If you cannot and the face covering will not work, use a face shield.  Before my colleague and friend, Monna, admonishes me……..if you have access to an N-95 or better, use that.  It has become pretty clear that the vast majority of cases are from person to person contact and the likelihood of a younger person suffering severe consequences is very small.  Consider the overall risk of wearing a face covering versus not wearing a face covering given the lab work.  I do not think there is a universal solution for all circumstances nor a universal material that can be used in all circumstances.

 

That's my non-CDC sanctioned opinion.

 

Zack

S.Z. Mansdorf, PhD, CIH, CSP, QEP

Consultant in EHS and Sustainability

7184 Via Palomar

Boca Raton, FL  33433

561-212-7288

 

 

 

From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU> On Behalf Of Patricia Redden
Sent: Thursday, June 4, 2020 2:13 PM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: [DCHAS-L] cloth face masks

 

CDC is recommending the use of cloth face mask in academic institutions, but the question is what is the best fabric for them.  Lab coats in academic labs are supposed to be chemical- and fire-resistant.  Does this apply to face masks as well?  If so, is there a source for them?

 

Patricia Redden, Ph.D.

Professor, Chemistry Department

Fellow, American Chemical Society

Fellow, ACS Division of Chemical Health and Safety

 

SAINT PETER'S UNIVERSITY

The Jesuit University of New Jersey

2641 John F. Kennedy Boulevard

Jersey City, New Jersey 07306

p: (201)761-6440    

f:  (201)761-6431

www.saintpeters.edu

 Named #1 in the nation for transformation in 2018 by the American Council on Education/Fidelity Investments  

 

--- 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

--- 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

Previous post   |  Top of Page   |   Next post



The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to secretary@dchas.org.
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.