These conditions would occur only when the quantity of sludge in the bottom of the tank is considerable and when such sludge is unusually rich in tetraethyl lead.

You will note that the steam-distillable lead (which is that portion of the lead which was present as tetraethyl lead or asorganic decomposition products of tetraethyl lead) was present ' only in a minute t r a c e .

R. 0* Carroll - (2) - January 7, 19^2 titles of tetraethyl lead in the sludge.

R. 0* Carroll - (2) - January 7, 19^2 titles of tetraethyl lead in the sludge.

Public Health Service Bulletin .>712, "Public Health Aspects of Increasing Tetraethyl Lead Content in Motor Fuel".

Unquestionably., thejmateriai is commercial tetraethyl lead.

With a view to larger number of persons handling tetraethyl lead-alcohol-water solution as use of the device becomes more widespread, question was raised whether antiknock solution (Vitol) was more toxic than tetraethyl lead in handling during gasoline mixing process.

Doyles Subject: Domestic TEL Use - 1959 In accordance with the recommendations of Public Health Service Publication fT12, entitled ''Public Health Aspects of Increasing Tetraethyl Lead Content in Motor Fuel," the Ethyl Corporation herewith reports the following Information with respect to domestic tetraethyl lead use during the calendar year 1959: 1.

Unquestionabiy..the.Jnaterial is comercial tetraethyl lead.

Public Health Service Bulletins #712 'Public Health Aspects of Increasing Tetraethyl lead in Kotor Fuel".

Considering the modesty of your request for tetraethyl lead, I should be disposed to ask the proper people in the Detroit Laboratories of Ethyl Corporation to send it to you.

D. 1504 East Clark Street - Telephone 488 CHARLES CITY, IOWA September 12,6 Standard Oil Company of Indiana Gentlemen, I need a small amount of Tetraethyl lead for some work I want to conductas user of Standard of Ind. for years I want to find out if I can get it from you or have to contact the Ethyl Corporation of America.

From the best information which is available to me I would feel that the hazard of the handling of your present "Vitol" mixture, from the aspect of evaporation of tetraethyl lead, would be approximately equivalent to that of handling gasoline containing 350 c.c. tetraethyl lead per gallon.

With a view to larger number of persons handling tetraethyl lead-alcohol-water solution as use of the device becomes more widespread, question was raised whether antiknock solution (Vitol) was more toxic than tetraethyl lead in handling during gasoline mixing process.

Philp presented the economic justification for increasing the permissible limit of tetraethyl lead in motor fuel to 4 mis. per U.S. gallon.