However, it is fairly certain that the contamination originates from tetraethyl lead that has been added to gasoline and that the lead is eventually being breathed and eaten by stock and people.

Further, studies conducted thus far and known to us have not shown tetramethyl lead (TML) to be significantly different from tetraethyl lead (TEL) insofar as air pollution hazards or industrial exposures are concerned.

ym performed* Xhs blood lead level of 11-12-62 w ee?

pbBt+ ion can be correctly recognised from only 2^ ng of tetraethyl lead (Figure 3 - normal spectrum; Figure 4 - integrated spectrum).

The committee suggested that the Public Health Service "in collaboration with the manufacturers of tetraethyl lead....and other appropriate organisations conduct studies to provide more definitive data on levels and trends of atmospheric lead contamination in selected urban areas and of the body burden of lead of selected population groups."

Kehoe,(^) we conclude that tetramethyl lead and tetraethyl lead (TEL) are no different from the standpoint of their possible effects on the' public health.

Kehoe: I am writing to request whether or not you might be interested in giving me your medical opinion concerning the .physical status of one of our tetraethyl lead workers who had an unusually large exposure to tetraethyl lead in August, 1968 and who persists in showing insidious mental changes.

This is the first time I remember reading; as a flatly undisputed fact; that tetraethyl lead' is converted to a carcinogenic compound.

It is known that some substances in our environment, for example, 2-naphthylamine and tetraethyl lead are converted to carcinogenic compounds.

It is known that some substances in our environment, for example, 2-naphthylamine and tetraethyl lead are converted to carcinogenic compounds.

I believe the simplest modification of the sign to make it both correct and adaptable, would be to use the designation "Lead Alkyl" where the sign now uses the words "Lead Tetraethyl."

Ocular,symptoms are fewer, it seems, with tetraethyl lead than with inorganic lead;.

I believe the simplest modi fication of the sign to make it both correct and adaptable, would be to use the designation ''Lead Alkyl" where the sign now uses the words "Lead Tetraethyl."

I believe the simplest modi fication of the sign to make it both correct and adaptable, would be to use the designation ''Lead Alkyl" where the sign now uses the words "Lead Tetraethyl."

TetraMethyl Lead does not appear to be any more toxic than Tetraethyl Lead which is currently being used, in gasoline in Japan. 2.