i. 822 86 1,822 26 p "*coooo O IP Operating jixpensee - Lead Refining a.

THIS BROWN TOP TUBE IS LEAD FREE.

(d) Maintenance of the study of tho general levels of lead intake to find, if possible, the increment of load intake by the general population, due to the use of leaded fuel.

THIS BROWN TOP TUBE IS LEAD FREE.

The e s s e n t ia lly s t a t ic char acter of hi3 p h ysical con d ition speaks ve r y, st r on gly a ga in st lead as a ca u se, and lead s me to fe e l that my i n it ia l Judgment was probably In co r r e ct , With t h is p oin t o f view , I can s ca r ce ly br in g m yself to vigor ou sly support a claim o f d is a b ilit y due to lead absor ption sin ce in my exper ience lead casek do not behave in t h is manner.

FOR USE AS A MOTOR FUEL ONLY CONTAINS LEAD Meanwhile Ethyl Corporation had procured a supply of signs like #1 above.

It has been our- practice, over the period of years, to follow at suitable intervals the lead concentrations in the urine and blood, of persons whose occupations give them significant exposure to lead in the activities concerned with leaded gasoline.

Reeearch by thla Office did Indicate a lead content of 1.7*1.

Paint) having the following pigment composition: 28$ zinc oxide, 28$ lead sul phate, 2J$ white lead carbonate, J$ titanium dioxide and 10$ asbestine.

s^.r, -- periodic blood and urine lead determinations on all workers . *'* ` - ,'; '.i'j'l; exoosed to -.lead,.'*' The' frequency with which these tests ''4j <-4 `iM*V' * " should be performed will- vary according to the degree 'of lead exposure in any one work situation and on the clinical "',/- \ appraisal of.

Those of particular interest to National Lead Company are marked with an asterisk.

Second, there is a slow and almost imperceptible decomposition of tetraethyl lead in leaded gasoline, but tanks used over a period of time will contain small amounts of these decomposition products in the scale on the sidos and at the bottoia!

(According to Aetius, syricum was made by the calcination of pure ceruse, white lead.

Com m ittee on A ir P o llu tio n from A utom otive Engine Exhaust C ity of C in cin n a ti REPORT TO THE CITY MANAGER from COMMITTEE ON AIR POLLUTION from AUTOMOTIVE EXHAUSTS CHAIRMAN Dean Cornelius Wandraacher College of Engineering University of Cincinnati SECRETARY Chas.

The announce ments included the followingi * 'Annual Review of Lead Industry" "Practical Application of Sheet Lead Tor Sound Barriers* "Lead Magasine" * 'Lead Radiation Shielding" "Publications and Filats" LIA participation in a number of industry-related projects such asi Hofmann Memorial Prize Competition, Electric Vehicle Exposition, and a conference of childhood lead poisoning received publicity in several publications.