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PREFACE 
1. This code of colors for gas-mask canisters was formulated by a 
committee which functioned under the procedure of the American 
Standards . Association. The work was sponsored by the National 
Safety Council. 
2. The personnel of the committee follows: 
Representing 
American Gas Association. 
Name 
Affiliation 
Chairman, E. S. Beaumont 1. 
John Roach. on wecemccacene eee. 
Peoples Gas, Light & Coke Co, 
Chicago, Ill. 
New Jersey Department of Labor, 
Trenton, N. J. 
Association of Governmental Offi- 
cials in Industry of the United 
States and Canada. 
Zbemical Warfare Service. 
Davis Emergency Equipment Co. 
Mine Safety Appliances Co. 
8. H, Rafe Lucca mmasmmas 
B. BR. Danis le cauasnpsnmanmmnn 
E. H. Kellogg Yemcaecccanna. 
J. M. Lewis, alternate___.... 
C. A. Pense....__. 
Chemical Warfare Service, Edge- 
wood Arsenal, Edgewood, Md. 
Bullard-Davis (Inc.), 67 Wall Street, 
New York City. 
Vine Safety Appliances Co., Brad. 
dock Avenue and Thomas Boule- 
vard, Pittsburgh, Pa. i 
Vine Safety Appliances Co., Pitts- 
burgh, Pa. 
llinois Industrial Commission, 300 
‘West Adams Street, Chicago, I. 
Do. 
International Association of Indus- 
trial Accident Boards and Com- 
missions. 
Do. 
National Bureau of Casualty & 
Surety Underwriters, 
National Safety Council, Chemical 
Section, 
National Safety Council, Mining 
Section. 
National Safety Council, Petroleum 
Section. 
Jnderwriters’ Laboratories. 
Do. 
Jnited States Bureau of Mines. 
United States Bureau of Standards. 
JInited States Department of Labor. 
B. Osborn, alternate. ....... 
Fred W. Sehl..acuecnucneeo-- 
CB. Bion. cmmmcnmssmmmsis 
B. Bilson cc cianacinmnin 
V.R. Currie ..ococeaemaneo.. 
A. H. Nuckolls. cocoa. 
#5 Nano, sltemnate..—-- 
H. 8. Norton. —cuecmuaeuacaen 
George K. Lewis .ooocaaeooo. 
Prof. Lester C. Lichty._..___ 
Secretary, R. H. Ferguson 1.. 
wo CR ro: gi ge 
Aetna Casualty & Surety Co., Hart- 
ford, Conn. 
Dow Chemical Co., Midland, Mich 
New Jersey Zine Co., Franklin, N.J 
Texas Co., 17 Battery Place, New 
York City. 
Underwriters’ Laboratories, 207 East 
Ohio Street, Chicago, Ill. 
rp Oe dl HR rm eo m1. ms 
United States Bureau of Mines, 
Pittsburgh, Pa. 
United States Bureau of Standards, 
‘Washington, D. C. 
Tnited Mine Workers of America, 
209 American Federation of Labor 
Building, Washington, D. C. 
Jheffield Scientific School, Yale 
University, New Haven, Conn. 
National Safety Council, 108 East 
Ohio Street, Chicago, 111. 
Smerican Society of Mechanical 
Engineers. 
National Safety Council, 
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1 Member of subcommittee. 
HANDLING CHANGES OR ADDITIONAL SUGGESTIONS 
3. That suggestions for color changes or additional colors to be 
added to the code may be promptly handled, a committee, under the 
sponsorship of the National Safety Council, has been named. Any 
suggestions should be made to the secretary of the committee. . 
4. When gas-mask canisters are properly marked and labeled it is 
possible to determine definitely at a glance the contents of the canister 
and the protection which it affords. This code was designed to elim- 
inate any confusion in the markings of the different manufacturers. 
By standardizing on the color markings it is a simple matter for a 
worker using a mask to know the proper canister which should be 
used in the atmosphere in which he must have protection. 
5. This code deals only with the marking of canisters. 
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