The first valid expression of this threshold, so far as I know* was given by Legg and Goadby in their book on lead poisoning and lead absorp tion* Their statement is to the effect that if the atmosphere in a plant does not contain particulate lead in excess of* 5 milligrams per 10 cubic meters, cases of lead poisoning would not occur at all* or would be very mild.

Fur thermore the only contact with lead upon which the claim is based was the use of a very small can of a mixture of lead, and oil used as a lubricant on the lathe which,the claimant operated.

"Tetraethyl Lead" "Lead in Construction" "Lead Compounds in Industry-A Review" "Storage Batteries" "Problems in Plucfeism" "Ccctoating Atomic Radiation" "Lead in Ceramics" "Lead Cable Sheathing" "Current Market Outlook-Lead & Zinc" "World Supply-Lead & Zinc" 'World Consumption-Lead & Zinc" Dr.

The lead concentrations were 3*17 and 4.23 gos per gallon.

Use cf lead lr.

Use cf lead lr.

3 , and between 5 and 5 micrograma lead/M3 for Station 4.

It is merely Indicative of a progressive lead absorption.

The lead stream.

In looking around somewhat casually, there appears to be mighty little recorded historical information as to the lead industries and lead poisoning in any of the hundreds of relatively recent publications devoted to lead.

We have virtually completed the story of ingested lead, in such a way as to know what we need to know about the absorption, distribution, storage and excretion of such lead.

if scu- lead poisoning in women dead after ingestion of .lead monoxid' in attemps to produce a- ' bortionr.

In looking around somewhat casually, there appears to be mighty little recorded historical information as to the lead industries and lead poisoning in any of the hundreds of relatively recent publications devoted to lead.

There is only one method avallable by which ve can determine the extent of the hazard of workmen exposed to lead in the lead trades* .That is by means of analyses of the blood and/or urine, which will shew us the extent to which these men have absorbed lead.

k jgtfiirii n > LEAD INDUSTRIES ASSOCIATION *J0 LOmOTON AVIMUI NSW VOftK 17, M* V.