Lead Refinery 3* Vhite Lead 4.

So far as I can see* the establishment of a threshold value for lead in the blood (for physiological reasons* I do not consider the rate of the urinary excretion of lead to be anything like as precise as the concentration of lead in the blood), to which the

"Lead."

1* a reprint with slight codifications of the chapter on th* handling of lead compounds from our recent technical data book "Lead in th* Ceramic Industrie*."

Hi lead exposure associated with the pouring .

Lead Industries Aa.ocUtlcc.

Lead-in-air samples were obtained only at operations processing lead bearing materials.

Another bulletin, the eighth in the aeries, on red lead palnta for railroada has boon approved by the p*d lead technical Cconittee and will he printed within the next two or three week*.

RED LEAD 2o.

The other three groups were exposed to lead and carbon monoxide as follows: group two: - lead alone; group three: carbon monoxide alone; group four: lead and carbon monoxide.

RED LEAD 2o.

Heering, Director of Health, con cerning the 19 cases of lead poisoning that occurred at the Magnus Metal Division of the National Lead Company, Cincinnati, Ohio, was referred to me for reply.

So far as X can see, the establishment of a threshold value for lead in the blood (for physiological reasons, X do not consider the rate of the urinary excretion of lead to be anything like as precise as the concentration of lead in the blood), to which there is no exception, is a

Kehoe was cf the opinion that the amount of lead on apples before being washed........ .should be dangerous to public health if it were straight lead.

Lead-in-air samples were obtained only at operations processing lead bearing materials.