Hood (2) - January 31, 1957 : ; ''VjV manufacture of tetraethyl lead.

Some of the essential differences between this form of encephalopathy and that due to tetraethyl lead are outlined.

The analytical figures that you give indicate that washing and aeration will effectively reduce the amount of lead vapor in t-he air, hut ore always has to consider the possible liberation or exposure to tetraethyl lead or its products 'when work, is actually begun.

They oorae to us from manu facturers of stoves who State that they have been requested by some one in the Quartermaster Corps to develop this, that or the other device for burning leaded gasoline* A recant inquiry from the Jiltrol Company stated that Camp Holabird was about to begin experiments on the use of activated olay for removing lead from gasoline.

The analytical figures that you give indicate that washing and aeration will effectively reduce the amount of lead vapor in t-he air, but or*8 always has to consider the possible liberation or exposure to tetraethyl lead or its products 'when work, is actually begun.

Hood (2 ) - January 31, 1957 manufacture of tetraethyl lead.

Van Hartesveldt of Thompson Products Company I told him of the results obtained in your Laboratory, both on the matter of the evaporation and selective absorption of tetraethyl lead by suspended material.

Perhaps, one of the most dramatic cases of the effect of additives is the well known exnmple of tetraethyl lead.

Perhaps, one of the most dramatic cases of the effect of additives is the well known exnmple of tetraethyl lead.

At the same time this is done, arrangements can be made to have lead analyses made in connection with your work.

The health hazard in the plant, as I see it, is almost exclusively a question of concentration of lead in the air in various places.

At the same time this is done, arrangements can be made to have lead analyses made in connection with your work.

Lead in gasoline is still viewed Dr.

This same critic ism applies to the series of results in this table beginning with the medical students and extending down to the tetraethyl lead workers - laboratory.

It Is quite apparent that the methods we have used in this country to pur our precautionary measures Into effect have been inadequate* I have a distinct feeling that there may be Inadequacies also outside of this country, and it gives me some anxiety to think that incidents of this sort may occur in connection with the cleaning of storage tanks in any part of the world* It seems quite certain that we shall have to set up some mechanism for taking this activity under our own supervision* we are in the process of setting up a mechanism for this purpose In this country* At present I do not consider it advisable to try to extend such a mechanism beyond our own province and X shall not make any reoesamend11ons on the subject until we have complete information as to the character and magnitude of the whole problem* As an illustration of what I mean, let me point out that all the oases of poisoning in this field have occurred In connection with tanks which have been used for mixing and which may, therefore, have con talned concentrated Fluid in the sludge at the bottom of the tank, as well as crystalline decomposition products of tetraethyl lead on the basis of the occurrence of eases we might assume that the danger Is confined to tanks that have been used for mixing as distinguished from tanks that have been used solely for the storage of finished leaded gasoline I am by no means certain that this oonelusion H# E# A# Boldero Is justified and until I m certain# I shall not wish to make any reoaurcendatlons of widespread application, on the other hand I consider It advisable# and 1 have so recommended to Sevan# that we take such steps as are feasible to remind the distributors of leaded gasoline abroad of the necessity of taking at least those precautions which have previously been recommended by us# 1 think you oil!