5 Lead Industries Association, Inc fes?

- I would take a totally different view of this matter, if even a scintilla of evidence could be obtained for the existence of the risk of lead poisoning among our people from the lead in the ambient air in combination with that in food and beverages - that is, from the common environmental sources of lead absorption.

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

Sales in 1938 were - Zinc Oxide, $14,897.25; white Lead, $18,505.25; sales in 1939 were - Zinc Oxide, $36,381.00; white Lead, $23,241.00.

NOTIFY THE LEAD OPERATOR FOR FURTHER INSTRUCTIONS. 6.

Diggs, advising that upon craving water from Tank Uos 9 at River Rouge recently, it was noted that the water was about the odor of Gasoline which lead them to believe that possibly dye, or lead had settled out.

During the war, we found out what we had never observed before, namely, that acute tetraethyl lead intoxication can be incurred as the consequence of improper handling of leaded gasoline.

Moreover this matter 13 not an important problem at present* Obviously however* any regulations developed now in this field should avoid the use of the word "Ethyl Gasoline" since this is a patented name and therefore* will not apply to other gasolines containing lead tetraethyl.

Louis (Lead & Oil) Alva W.

INDUSTRIAL HYGIENE The effect of some metals, such as mag nesium and zinc, appears to be transient Only limited data are available on the exotic and rare earth metals Although the dusts and fumes from metals with low toxicity do not need as much atten tion as the dusts and fumes from highly toxic metals, they should not be neglected or disregarded The metals with low toxicity are more readily controlled because greater amounts can be tolerated, but their dusts and fumes should be kept at reasonable levels since excessive amounts of any of them can be harmful Inhalation of the dust of lead compounds is the most common mode of entry of lead mto the system, and ingestion of lead com pounds can add to the problem if personal hygiene is poor Workers therefore should be encouraged to wash thoroughly before eat ing, and lunchrooms should be apart from work areas Lead is a normal constituent of plants and animals, and people ingest and excrete it daily even though they are not exposed to lead in their daily work When intake rates exceed the normal excretion rates, however, lead bmlds up m the body When the accu mulation readies a sufficient level, symptoms of poisoning or intoxication appear The concentration of airborne lead should there fore be kept below the threshold limit be cause of lead's high toxicity and its tendency to accumulate in the human system Beryllium intoxication is a severe system ic disease that can result from the inhalation of the dust or fume of metallic beryllium, beryllium oxide, and soluble beryllium com pounds (There is no evidence of intoxica tion from the ingestion of insoluble com pounds ) Only the inhalation of the beryl lium-bearing dusts or fumes produces sys temic disease Accordingly, control of such dusts and fumes to keep them below the concentration specified by ACGIH (Ameri can Conference of Governmental Industrial Hygienists) threshold limit values is a basic protective measure When the soluble salts of beryllium, espe cially beryllium flounde, contact cuts or abrasions on the skin, deep ulcers may be formed which heal very slowly, and com plete surgical excision of the ulcer is some times required to effect healing.

They also use a 7ppm limit for lead.

La Salle St., Chicago W hite Lead, C arbonate Sublim ed Blue Lead R ed Lead Super Sublim ed W hite Lead Sublim ed W hite Lead Litharge O range M ineral Sublim ed Litharge Lithopone Zinc Oxide .. u.a.

The idea which you have advanced sounds to me like a good one, for this procedure,if measurably successful, would certainly greatly reduce the gross quantity of available lead.

During the war, we found out what we had never observed before, namely, that acute tetraethyl lead intoxication can be incurred as the consequence of improper handling of leaded gasoline.

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