Aaax Lead 6 Zinc, Inc.

' l - lead the l(.

The control measures consist of the following co-ordinated types of hygienic supervision, namely, (1) a continual clinical study of all workmen, (2) regular study of the magnitude of the lead exposure and lead absorption of representative groups of workmen through periodic determinations of the rat of lead excretion in the urine and feces, (3) regular periodic critical survey of plant activities and operations by the physiolan-lneharge, end (i+J regular determination of the lead content of the air of all rooms and working spaces in the plants* Clinical Work.

The health hazards associated with lead/chromate.

Only in lead blending operations do the concentrations of lead even come close to approximating the safe limit.

, aad Ane- soode Llqsid rate Lead fl(A2yi.

Lead Refinery, Inc.

In on' Instance litharge and In the other lead povder.

Only in lead blending operations do the concentrations of lead even come close to approximating the safe limit.

MINUTES OF SPECIAL COMMITTEE TO STUDY LEAD POISONING Hotel Statler - Washington, D, C, - March 2h, 195U Present were* DR, JOHN H.

Lead Accumulation on the Surface of the Earth.

Batlonai Lead Company National Lud Company 6t.

Verification of the Tailings Tonnage and Tailings Lead Grades by Gregory F.

0000-NLI-000017915 NATIONAL LEAD COMPANY !

Verification of the Tailings Tonnage and Tailings Lead Grades by Gregory F.