T his amount o f lead would appear to be c o n sid e r a b le , s in c e on r a th e r damp days,* a f t e r f l y i n g f o r t h r e e o r f o u r h o u r s , I h a v e n o te d a d istin c t gray d ep osit a ll g la ss fa ce s o f the instrum ents, s u ffic ie n t so t h a t I cou ld e a s il y tr a c e f in g e r marks in th e d e p o s it.

for lead and cyanide hardening, and melting pots for lead, tin, solder and babbitt, which use the direct heat principle of immersing a helicoil sheath wire cast-in unit directly in the metal to be melted.

I hope' to be able to make these observations the basis of some consideration of future lead plant Sites.

The wide discrepancy in the appreciation of ti degree of asbestosis by different pathologists leads to confusion, especially befi a compensation board.

Thus i f th e le a d I n ta k e i s s u b s t a n t i a l l y th e same from day to day, lead output in the u rin e w ill vary c h ie fly w ith the w ater o u tp u t.)

Lead poisoning.

EXHIBITORS Comprise leading firms in each phase of the industry: number has varied from 160 to 327 exhibitors.

The classes of materials analyzed were* silica and silicates metals (lead, zinc, copper, tin, mercury, etc.) fumes (lead, zinc, mercury, solvents such as amyl acetate, methyl alcohol, dlchlorbenzlne, tricresylphosphate, etc.) gases (carbon monoxide, sulphur dioxide, nitrous fumes, etc.)

Zonolite forms a THICK insulation; is approved by leading air conditioning firms for use with their units.

Quit work on April 19th, was trusted by physician for lead poisoning and has confclrued to be ill since.

.*9 We sandblasted' new doors, Mjy^ sprayed on lead 0.010 in. thick.

Co;, 840-842 Streamline Pipe and Fittings Co., 976-977 Wolverine Tube Company, 980 PIPE, Cement Eagle-Picher Lead Company, The, 941 Johns-Manville, 950-951Ruberoid Co..

Inc. 1936 Lead inJujmes Association.

., 1105 Eagle-Picher Lead Co., 1021 Ehret Magnesia Mfg.

N8109 2# The c h a r a c te r o f w ork was n o t of the ty p e w hich I s a sso c l^ L te d w ^ n s i g n i f i can t lea d exposure#- There i s a hugh background o f e x p e rim e n ta l e v id e n c e to show t h a t th e h a n d lin g o f E thyl gaso lin e does n o t b rin g about an appreciable a b so rp tio n o f lead through th e akin* F u rth e rm o r^ ^ ^ -- in _the c o u rs e o f d i s t i l l a t i o n o f th e ty p e M r .^ P H H H r c a rrie d o u t, th e re is no occasion w hatever fo r :he~inha 1a tio n o f lead # The d i s t i l l a t e i s -q u a n titiv e ly re c la im e d so t h a t even very sm all amounts o f low er b o ilin g p o in t petroleum products are lo s t .