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DATE: 19
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TRANSACTIONS
29th NATIONAL SAFETY
CONGRESS
GENERAL AND INDUSTRIAL SESSIONS
CHICAGO
OCTOBER
1940
NATIONAL SAFETY COUNCIL,
20 North
Chicago
Council. Inc. U. S.
INC.
Foreword
Transactions of the 29th National Safety
i and Exposition of the National
<
7-11, 1940, are published in two
Volume I contains
the
Sessions and
of the various I n -
dustrial Sections of the Council. Volume IT contains the
Street an<l H i g h w a y T r a f f i c , the C o m m e r c i a l V e h i c l e .
Transit, the Child
and the Home Safety Sessions.
Volume T is distributed automatically to a l l
mem-
bers of the C o u n c i l . V o l u m e H is sent to members who nre
believed to be interested
in the se.ssions it contains.
However, other members of the Council may obtain Volume
upon request.
Many Council members have found it advantageous to
tribute copies of the Transactions V o l u m e s to the individual
executives, foremen and supervisors of their organizations,
who make use of the practical safety information the vol-
umes contain to organize accident prevention programs. T h e
volumes contain a vast amount of standard
ma*
terial. E x t r a copies of the Transactions may be obtained as
follows: V o l u m e I . one to JO copies at $2 e a c h ; 11 o r more
copies
each. E x t r a copies of V o l u m e H may be had at
75 cents each.
TH E ings
Transactions are a condensed record of the proceedof the Congress, T h e papers and addresses and many
of the discussions have been edited to delete
matter, abbreviate the less
portions, and empha-
size those parts of particular usefulness in promoting effec-
tive safety organization and other
prevention meas-
ures. The volumes are, therefore, a somewhat
ver-
sion, compact, practical, and of particular value to the
dent, the supervisor and the executive in achieving more
thorough accident prevention success. T h e original manu-
scripts are available for additional reference, if
in
the fifes of the National Safety Council.
T
e
l
u
n
i
Nati nate
onal Safety from discus
Cou sion
ncil, mat
t
at er
s
i
ts w
h
i
c
h
are
not
seeks pertinent
to the aims of the Congress or which may be contrary to the
policies. However, it cannot accept responsibility
for all the views expressed cither in the papers presented or
in the discussions based upon these
NATIONAL SAFETY
Inc.
2 0 North
Drive
Illinois
II
Contents
Council
and Directors
Council Purposes and Program
Annual Meeting of Members.
Annual Banquet
General
Agricultural Safety
Building Maintenance
Eye
Fire Control and
Fundamental Causes of
Governmental Safety Service in
Health
in Industry
Industrial Nursing
Maintaining Interest in Safety
Occupational Disease
'
91
I n d u s t r y . . . . . . 107 119 .151 165
Plant Transportation Psychology and Safety (Early
,
197
i
Safety Safety Supervisors
r Safety Training Visual Education
Aeronautical Section
Section Automotive and Machine Shop Section Cement and Quarry Section.
Construction Section Food Section
Marine Section Meat Packing, Tanning and Leather Industries
Section
Metals Section
Mining Section
i
Paper and Pulp Section
Petroleum
Power Press Section
Public Utilities Section
Refrigeration Section
Rubber
Steam Railroad Section
r
Textile Section
Wood Products Section
Safety Exposition Exhibitors
Index
305 743
II
National S a f e t y Council, Inc.
H O N O R A R Y MEMBERS
OF Robert W . Lew R, Palmer
AND
OFFICERS (1940-1941)
Ned H. Dearborn,
for Education
I . W . M i l l a r d , Vice-President for Finance and Treasurer
T.
Asst. Vice-President for Finance and Asst. Treasurer
Walter
Vice-President for Industrial Safety
Lew Palmer,
for
Councils and Public
Relations
A. V.
Vice-President for Home Safety
R. T . SoLENSTEN, Vice-Presidcnt for Membership
L e s l i e J.
Vice-President for Public Safety
W. H. Cameron,
Director and Secretary
EXECUTIVE COMMITTEE (1940-1941)
H . J, A l p r i c h , Spencer
Sons, Inc.
J. I .
Past President
K . B e n n e t t , Safety Dept., Automobile
C W.
President
W.
Sinclair Prairie Company
of Rhode Island
H . E . B o l t , South Bend Civic Safety Council
Chas. S.
Public Utilities Section
F. W.
Section
W . H . C a m e r o n , National Safety Council. Inc.
L. C. C a m p b e l l , The
Company
R o b e r t W . C a m p b e l l , Past
B. C h a n t . Ontario Pulp & Paper Makers* Safety Association
New York
A.
Past President
M a r c u s A . Dow, Past President
Harold F.
The American National Red Cross
C a d w a l l a d e r E v a n s , J r . , Mining Section
D.
Past
H. J.
Jones & Laughlin Steel Corp.
E. E. G r o v e r , Columbus Southern Ohio
Company
Harry
The Pullman Company
H . H a r v e y , Greater New York Safety Council
G. T. Hellmuth,
Rapid Transit Company
4
OFFICERS A N D
Continued
H a r o l d G . H o f f m a n , New Jersey Unemployment
Com-
mission
W a l t e r G.
Past
C.
Safety
J o h n E . L o n g , Past President
Thos. H , MacDonald,
S . Public Roads Administration
R o b e r t A.
Public
Coordinated Transport
Dr.
Yale University
I. W.
Industrial Gloves Company
M i l l e r , Petroleum Section
L . M i n e r , E . 1. du Pont dc Nemours Co.
Hon. Eliot
Director of Public Safety, Cleveland
E. J.
Jr.,
Safety Council
W a l t e r S . P a i n e , Aetna L i f e & Affiliated Companies
L e w P a l m e r , Past President
C E.
Past President
G. H.
General Electric Company
A l b e r t S.
Industrial Relations
Inc.
J.
Construction Section
L t . C o l . H e n r y A.
Past President
A . V . R o h w e d e r , Duluth, Missabe & Iron Range Railway Company
C h a r l e s S c o t t , Past President
F r a n k T . S h e e t s , Portland Cement Association
C a r l S m i t h , Greater Cleveland Safety Council
C. R. S m i t h , American A i r Lines, Inc.
R. SoLEN.STEN,
Company
J. S o r e n s o n , Traffic Engineer, Chicago
John
Consolidated Edison Company o f New York,
John M.
Lehigh Valley Safety Council
J. R . T e n n e y , Steam Railroad Section
C P.
Past President
G e o r g e G . T r a v e r , Greater Chicago Safety Council
V, T r o t t e r , Automotive & Machine Shop Section
D r . C . H . W a t s o n , Past
A. W . W h i t n e y , National Conservation Bureau
R. V . W r i g h t . Railway Age Magazine
A r t h u r H . Y o u n g , Past President
DIRECTORS (1940-1941)
H . J. A l d r i c h , Spencer Kellogg & Sons, Inc.
F r a n k E . A m e s , Marine Section
A . L . A r m s t r o n g , Rochester, Y .
V e r n W . A u b e l , Safety Div., Syracuse Chamber of Commerce
J, B a n a s h , Past President
D. A . B a r r e t t ,
Steel Corporation
W . Beck,
States Rubber Company
S
OFFICERS A N D
Continued
H. K. Bennktt.
Automobile Club of
Island
C
Past President
E . F. B l a n k , Jones
Steel Corporation
H . W. Boggess, Sinclair Prairie Oil Company
0. C,
Wood Products Section
H . E. B o l t , South Bend Civic Safety Council
C B. B o u l e t , Wisconsin Public Scrvicc Corporation
C h a s . B o w d e n , Public Utilities Section
F. W. Braun,
Section
A.
Metals
Joseph A .
Elizabeth Safety Council
F. B r o w n , Standard Accident Insurance Company
W. H . C a m e r o n . National Safety Council, Inc.
L . C. C a m p b e l l , The Kopppers Coal Company
Robert
C a m p b e l l , Past President
R a y m o n d A . C a r e y , Evanston Safety Council
R a y C a r n e y , Kenosha Safety Council
Robert I.
Aetna Casualty Surety Company
D. B . C h a n t , Paper & Pulp Section
D e a n M . C l a r k , Food Section
W m . M . C l a r k , St. Joseph Safety Council
E d w a r d L . C o o k , Rochester Safety Council
J. E .
Bethlehem Steel Company .
Ned H . D e a r b o r n , New
a.
Past President
C.
The Liquid Carbonic Corporation
R, A.
Cement & Quarry Section
W.
East Bay Safety Council
C. R. D o o l e y . Socony Vacuum O i l Company, Inc.
J a m e s B . D o u g l a s , T h e Philadelphia Gas W o r k s Company
M a r c u s A . Dow, Past President
Ralph W .
J r . , Springfield Safety Council & Hampden
Safety Council
Harold F.
The American National Red
C a d w a l l a d e r E v a n s , J r . , Mining Section
D. D. F e n n e l l . Past President
Dr. H a r t E .
Chicago Rapid Transit Company
E d m u n d F i t z g e r a t . d , Safety Div., Milwaukee Association of Cont-
merce
Victor B.
Richmond Safety Council
H o w a r d B . F o n d a , Burroughs Wellcome & Co.
Inc.
A r t h u r C . F r e y . Worcester Safety Council
L y l e H . G i f t , Peoria Association o f Commerce Safety Council
Randolph
Rahway Safety Council
H e n r y J. G o r m a n , Blackstone
Safety Council
W. A . G r i f f i n , American Telephone Telegraph Company
H . J. G r i f f i t h , Jones Laughlin Steel Corporation
E . G r o v e r , Columbus & Southern Ohio Electric Company
Harry
The Pullman Company
D. H a r r i n g t o n , U . Bureau of Mines
6
OFFICERS A N D
Continued
Frank H. Harrison.
Harvester Company
H . H a r v e y . Greater New York Safcty.Council
G. T . H e l l m u t h , Chicago Rapid Transit Company
J. C. H e r b e r t , Greater Los Angeles Safety Council
H a r o l d G . H o f f m a n . New Jersey
mission
J,
H o l l e y , Child Education Section
O l i v e r H o p k i n s , Rubber Section
S . B . H o r r e l l , The Carey Salt Company
M e r r i c k J a c k s o n , Employees' Publication Section
W . F l o y d J a c k s o n , Delaware Safety Council
W m . F . J a m e s , Philadelphia Safety Council
J a s p e r B . J o h n s o n , Madison County Safety Council
T h o m a s P. K e a r n s , Industrial Commission of Ohio
H , Kelly,
Interstate Commerce Commission
W a l t e r G . K i n g , Past President
Wm. C. Knoelk.
Safety Commission
W m . S , K n u d s e n , Detroit Industrial Safety Council
C. L .
Great Northern Railway Company
RoY L e e , Contra Co.sta County Safety Council
A r n o l d L o c k e r b y , Grand Rapids Safety Council
J o h n E . L o n g , Past President
J. W . L o r d , Commercial Vehicle Section
H . M a c D o n a l d , U . S . Public Roads Administration
H o n . A r t h u r W . M a g e e , Commissioner o f Motor Vehicles,
Jersey
New
Roy S.
Seattle Traffic & Safety Council
R . A . M c A r t h u r , Public Scrvicc Coordinated Transport
H. N. McClellan,
Traffic Safety Commission. L t d .
D r . M i l l e r M c C l i n t o c k , Yale University
D a v i d L . M i l l a r , St. Louis Safety Council I . W . M i l l a r d , Industrial Gloves Company
C h a s , A. M i l l e r , Petroleum Scctitm
H a r o l d L . M i n e r . E . I . du Pont de Nemours
R. B. M o r l e y , Industrial Accident Prevention Associations
C L . M u r r a y , Mason City-Ccrro Gordo County Safety Council
Gen. Daniel
Massachusetts Safety Council
M . C. N e l s o n . Des Moines Safety Council
Hon. Eliot
Director of Public Safety. Cleveland
F r a n k N e w e l l . Toledo Safety Council
E. J. O ' B r i e n , J r . ,
Safety Council
George C . A.
The
Edison Company
W a l t e r S.
Aetna L i f e & Affiliated Companies
L e w R . P a l m e r . Past
D a v i d A. P a t t o n , Newark Safety Council
V. P e n d l e t o n , Power Press Section
C E. P e t t i b o n e , Past President
G. H .
General
C'onipany
J u d g e H a r r y H . P o r t e r . Street Highway Traffic Section
A. A.
Section
OFFICERS A N D DIRECTORS, Continued
Counselors, Inc.
J-
Construction Section
L t . C o l . H e n r y A.
Past President
A. V.
Duluth, Missabe Iron Range
Henry
S c h a f f n e r , Meat Packing, Tanning &
Section
C h a r l e s S c o t t , Past President
Railway Company Leather Industries
E a r l S,
Utica Safety Council
F r a n k T . S h e e t s , Portland
Association
John
Dr. L .a .
Ernest L.
Skinner,
Baltimore Safety Council
Bethlehem Steel Company New Haven Safety Council
Safety Dept., Nashville Chamber
o f Commerce
C a r l L . S m i t h , Greater Cleveland Safety Council
C. R. S m i t h , American A i r
Inc.
V. S n e l l , Chattanooga Safety Council
R. T . S o l e n s t e n , Elliott Service Company
L e s l i e J.
Traffic Engineer, Chicago
J o h n S p e n c e , Kansas City
Council
E.
Philadelphia. Pa.
J o h n S t i l w e l l , Consolidated Edison Company o f N . Y . . Inc.
C . S t o n e , Western Pennsylvania Safety Council
John M.
Lehigh Valley Safety
J.
Steam Railroad Section
Arthur M.
Consulting Engineer
C P.
Past President
(
T r a v e r . (rrcater Chicago Safety Council
V. 1.
Automotive & Machine Shop Section
E.
Albany Safety Council
Dr. L .
General Electric Company
J.
Superior Douglas County Safety Council
Stanley
Chemical Section
D r . C . H . W a t s o n , Past President
W.
W e a v e r , Textile Section
A n g l i n W h i t e , Safety Div., Birmingham Chamber of Commerce
S. E. W h i t i n g , Lilierty Mutual Insurance Company
A . W . W h i t n e y , National Conservation Bureau
R.
W r i g h t , Railway Age Magazine
Arthur H. Young.
President
J.
Duluth Chamber o f Commerce
8
Council Purposes a n d Program
The National Safety Council is a non-
profit, cooperative association whose
tive is the elimination o f
To
achieve this objective the Council advocates
the following program o f safety activities:
1. Creating I n t e r e s t Safety. People
will try to prevent accidents only when they
are convinced of three things: (a) that acci-
dents are really a serious problem, threaten-
ing personal happiness, industrial efficiency
and economic security; (b) that accidents
don't "just happen," but that each one has
ascertainable causes;
that acci-
dents can be prevented. The basic require-
ment in a national safety
there-
is a dramatic and effective presentation
of these facts to more and more people.
Finding Accident
Accident
causes are not the
in any two
in any two cities, in any two schools. They
are not the same f r o m one time to another.
Every Industrial
every
every
school and every other public o r private or-
therefore, must study the causes
of accidents in its own group, so that pre-
vention efforts always w i l l be directed at
the things really responsible f o r accidents.
3. Maintaining Interest i n Safety. Peo-
ple retain interest in very few things of
which they arc not continuously reminded.
Therefore, it is the task o f the
the
the
the school, the
public
and every other educational
to keep reminding the worker, the
driver, the
the housewife and the
child that freedom from
de-
pends
caution, and that the
way is the right way
the
way--
from the standpoint not only o f human sat-
isfaction, but of social
and econ-
omy.
4. Engineering Improvement. Many
arcidrnts occur because equipment is faulty.
The punch press is
the auto-
are worn, the stairway is
crudely built, the
is defective, the
stop sign is obscured. The avoidance o f
requires that safety be
built into every piece o f machinery, every
home, every school building, every highway.
We must insist that the things we
whether a
or a stop
a band-
or a blast
safe things. And
we must be willing i f necessary to pay a
higher price because o f this
safety
realizing that i t is true economy to
do so.
5. T r a i n i n g for Safety. Many accidents
occur
the injured person some
other
acts in an unsafe manner. This
unsafe act often is committed because the
involved never has been taught how
to <lo the job i n the safe way. Therefore.
l>oys and
men and women, must be
taught how to work, how to drive, how to
cross the street, how to live safely. This
teaching and training is a joint responsibility
of industry, of schools and
of gov-
ernmental groups and of parents in the
home,
Supervision for Safety. Many who
know well the
method o f performing
an act nevertheless are involved in accidents
because, due to hurry, fatigue,
or some other
they do not per-
f o r m the act in what they know is the safe
way.
we
good foremen in
industry, alert patrol boys in our
diligent police officers on our
parents in our
These,
through wise guidance o f those under their
can greatly minimize the
of accident.
7. L e g i s l a t i o n for Safety. Avoidance o f
accidents
the adoption and scien-
tific enforcement of sound
lation on traffic, on industrial
on
public
on home construction
and maintenance, and on many items of per-
9
300
in which courses are given
shop mathematics,
materials and
methods of aircraft
rules
and regulations, aircraft radio, internal
engines, etc.
Each apprentice is at the same time carry-
on his regular work schedule in the
shops; is assigned to assist a qualified l i -
censed mechanic, and his classroom work
does not interfere except to the extent that
he is
f r o m the shops i f a class in
which he is enrolled is conducted during his
who seem to possess most completely these
qualifications. I n a further effort to
only the best in the
arc made to administer <lextcrity and manip-
ulatory
to each of these men in an
effort to
some indication of his true
mechanical aptitude and intelligence.
tests are
inclusive and broad in
that they require eight hours to
and were chosen upon the recommendation
of experts in vocational guidance and em-
ployee
work shift. An apprentice's work assignments arc ar-
ranged so that the work he is doing at any time is closely related to the subjects
he is studying i n class; likewise, the entire training program is set up to provide f o r an apprentice spending a given number o f months in each department of maintenance.
The applicants finally selected are employed as stockrunncrs or cleaners, where they have the opportunity to familiarize themselves with the various airplane and engine parts. They serve in that capacity generally f o r or 12 months, at which time they arc placed in the apprentice mechanics* training
As the program has developed, the proh-
A l l shop supervisors who have apprentice
of selecting capable and dependable mechanics working under
make a
to place in the apprentice training periodic report to the
o f appren-
school has itself become somewhat
tices and the Apprentice Committee con-
the persons selected must possess cerning the
rating
appear-
the intelligence and mechanical aptitude
cooperation, conduct, health,
necessary to master a highly technical craft, quality of
ability, and desire to learn
as the stability, energy, and per- and actual
severance to complete a four-year training program. Persons placed in this school who do not have the tenacity to see it through, represent a rather substantial loss in time and money.
Throughout the entire four-year training
the apprentice is taught theory
principle in the classroom and has practical
instruction and experience i n the shops.
Though
Airways has found that
Experience has indicated that those appli- this method of selecting and training
cants who p e r f o r m best arc those who have
mechanics requires a considerable
had at least a high school education w i t h amount of time and some expense at the
some mechanical training and
outset, i t has likewise found that the per-
Further, i t is found that those applicants sons so selected pos.sess the necessary qual-
f r o m families mechanically inclined gen- ifications to capitalize on this extensive
prove more satisfactory.
training program and that in the long run,
Keeping these things in mind,
Airways carefully selects f r o m the rather
large group o f
men who apply, tho.se
a considerable amount o f time and money is saved and a more highly capable airplane mechanic is generally produced.
ADJOURNMENT
A m e r i c a n S o c i e t y of S a f e t y Section
Officers 1939-1940
W. B r a u n . Employers
j.
Jones Laughlin Steel
Hydro Electric Power
Wis Pittsburgh, Pa.
Toronto,
E. B u r n s . National at
Council, Inc..
A d a m s . International
Co.,
N Y
American
Association, New York, N. Y.
J. I .
Engineer. Chicago,
B e c k , United States Rubber Co., New York, N . Y.
R.
Union Carbide
Corp., New York, N Y
Wisconsin Public
Milwaukee. Wis.
B u r n s , Kan.sas
Safety
Calif, (San Francisco Chapter.) City.. Mo. (Kansas City Chap-
F r a n k C o n r o y , Union Carbide Co.. Niagara
N . (Niagara Frontier Chap-
R
Pittsburgh Plate Cxlass Co., Crcighton. Pa. (Western Pennsyl-
vania Chapter.)
E. D o n o v a n , Standard Oil Co. o f California, San
Calif.
F a r l i n , Consolidated tan hapten)
Co. of N . Y., New York. N . Y. (Metropoli-
H. F. G i l b e r t , American Cyanami<l Co.,
N . J. (New Jersey Chapter.)
Roy
G o d w i n , Philadelphia Electric Co.. Philadelphia, Pa. (Philadelphia Chapter.)
United Gas Pipe Line Co., Shreveport. La. (Gulf Coast Chapter.)
McA.
Industrial Commission of Wisconsin, Madison,
E v e r e t t F. K i n g , Lever Brothers Co.. Cambridge, Mass. (Boston Chapter,)
E.
The
Coal Co.. Pittsburgh, Pa.
L l o y d , National Bureau of Standards, Washington, D .
J. E. L o n g , The Delaware Hudson Railroad Corp., Albany, N . Y
P a i n e , Aetna Casualty & Surety Co.. Hartford, Conn.
*A. S.
Industrial Relations
Inc., New York, N . Y.
A. R o h w e d e r , Duluth, Missabe
Range Railway
Duluth, Minn.
Ocean Accident
New York, N . Y.
General Electric Co.,
N . Y.
J. S. S h a w . Hercules
Co.,
W. Smith,
Co.
Chicago,
H. S. S m i t h , Union Carbide &
Corp., New York. N . Y.
F.
Buick Motor Co., Flint, Mich.
C W.
Traders
Insurance Co., Dallas, Texas
E. W h i t i n g , Liberty Mutual Insurance Co., Boston, Mass.
Mine Safety
Co., Pittsburgh, Pa,
Chairman
301
Safety
Congress
His
habits are slightly above
the average, but not beyond the
of
of
workmen i f they try to attam
higher standards.
Z His physical habits are
than the
average of the group he supervises.
His moral habits are above average but
he not a moral prude and docs not try
to
or condemn
workers.
4. His emotional habits are such that he
he can do every job
than his best
men.
8. He exhibits intent to be fair
decision. (He w i l l be
he
exhibit fairness only
does not
too often and there is never any evidence of
intent to be unfair.)
The range of each of these
detennined by the way the group
This may seem too low f o r some o f us.
One
1
"an even keel" but can show righteous personality attributed to me by that
or shed a tear of human
hen 1
want a
Maybe
thy when everybody knows the situation dc- that is why his 8 6 men
and
it.
why he had a very bad record of
5. His dress and appearance is neat hut
not out of keeping with his
a foreman must wear a
of
rather than overalls.)
6. He speaks xvith his men rather than
or fl/ them a language
by correct
diction, enunciation, and pronunciation.
swear at
i f he smiles when he
does so.)
7 He is a good judge of proper perform-
ance and knows how to direct but
respect i f he insists on showing that
and safety of production.
The fact is that unless you are willing
to have your personality attributed to
by the group you lead,
have no right
to be called the leader.
only do you
have no
but
actually
not be
the
even though you may be desig-
nated as such. I f and when you are per-
accepted by the group to
must
your
you
they promote efficiency on the part of the
individuals.
ADJOURNMENT
Cement and Quarry Section
Officers 1939-1940
General
Missouri Portland
St. Louis. Mo.
A.
Universal Atlas
Co.,
Y.
M,
The
Stone Co..
Pa.
J.
Portland Cement
Chicago.
News Letter
D e m p s t e r . Canada C ement Co.. L t d . , Montreal, P.
Canada,
Engineering Committee Chairman--*],
ZooK.
Lakes Portland Cement (
Buf-
falo. N . Y.
Membership Committee
A.
Lehigh Portland
Co..
Allentown, Pa.
Program Committee
P.
The General Cru.shcd
Co., Easton.
Publicity Committee
Lawrence Portland
Pa.
Committee
Adams,
S.
of Mines,
Members at
Lone Star Cement Corp. New York, N . Y ,
*W. H . B a k e r . J . Baker Co.. York, Pa.
D. B a r r y , Universal Atlas Cement Co., New York. N . Y .
J. B o y d , National Cru.shcd Stone Assn,, Inc.,
D. C.
B.
Pennsylvania-Dixie Cement Corp., Nazareth, Pa.
J r . , Warner Co., Philadelphia. Pa.
*F. B .
Dewey Portland Cement Co.,
Iowa.
S. W .
National Lime Assn., Washington. C.
F. E. T o w n , Medusa Portland Cement Co.. Manitowoc. Wis.
*A.
The New Haven Trap Rock ( New Haven, Conn.
Co.. D. C.
Officers 1940-1941
A . D i t t m a r , Universal Atlas Cement Co., Hudson, N .
Jice
M . G r a v e r , The
Crushed Stone Co., Easton, Pa.
Powell,
Portland Cement Co., Cleveland, Ohio.
J. R .
Portland
Assn., Chicago,
Letter
D e m p s t e r . Canada
Co., Ltd., Montreal, P.
Canada.
Committee
Lone Star Cement Corp., New York, Y .
Committee
Henry A.
Portland
Pa.
Committee
The General Crushed Stone Co., Easton, Pa.
Committee
A d a m , Lawrence Portland
Co., Northamp-
ton, Pa.
Committee
W . A d a m s . U . S . Bureau of Mines, Washington. D .
at Large--
H . B a k e r . J. E. Baker Co.. York. Pa.
E. D . B a r r y , Universal Atlas Cement Co., New York. Y .
Chairman