In fact we have data on a group of fourteen patients that were poisoned with tetraethyl lead in 1925, since which time they have continued at work in the manufacturing operation and have been under monthly medics!

Since the overall problem does not differ substantially from that presented by tetraethyl lead, the same safety recommendations will be applied in respect of manufacture and distribution as apply to tetraethyl lead at the present time.

In fact we have data on a group of fourteen patients that were poisoned with tetraethyl lead in 1925, since which time they have continued at work in the manufacturing operation and have been under monthly medics!

The toxic hazards that must be dealt with are those assoclated with the vapors of mixed hydrocarbons and of tetraethyl lead.

Certainly this vas the case if this lead vas in the fora of vaporized tetraethyl lead.

The following men have been involved in the tank clean ing, and are listed in the_estimated approximate order cf exnoswro to tetraethyl lead!

larger proportion of the organic lead in the sludge vas tetraethyl lead.

Lead, however.

(The term "ethyl gas" is a colloquialism which, at present would be spoken of as "leaded gasoline" or, better, gasoline containing tetraethyl lead.)

^s.i>--v>--`raent and maintenance of safe conditions for the manufacture and use of tetraethyl lead.

Even with such a toxic substance as lead tetraethyl he states (Tetraethyl Lead Poisoning.

The: article omitted is Machle' s account of "Tetraethyl Lead Intoxication and Poisoning By Related Compounds of Lead," JAMA 105 :578-585* 1935.

With respect to the potential absorption of tetraethyl lead, as differ entiated from that of inorganic lead compounds, there are no blood changes of any kind that have any relevance Wo such changes occur even in fatal tetraethyl lead intoxication.

We have come to recognize that pollutant lead levels on a world-wide scale are tens to thousands of times larger than natural lead levels, and that the route: ore lead, to tetraethyl lead, to atmosphere, to seas is of major importance.

# The supply f my reprint; of one of our Article on setractby1 load 1 exhausted* t asa sorry because it is the most'nteresting article which we have published on the subject Zt can be found in the American Journal of Hygiene, Vol* 13, p* 1#8 1931 and la entitled "The Behavior of Lead in the Animal Organism XX Tetraethyl Lead" by Kehoe and Thmsann.