m Measured Blood lead -.: - Trijp Glood Lead Throsho 1 id L in'-i t pi - Measured Blood lead Thm-.iviiiv-nt Figure Z - True blood lead vs measured blood lead. 2<>rr of the total variance even through the method variance was not excessively large.

The personal air monitor study was conducted to determine the relationship between air lead levels and blood lead levels with the air lead being measured using personal air monitors.

Fibrosis IS A SYNDROMS Ok MSTALIC POISONING.

A pparently they are not c le a r in t h e ir m ihds a s to th e p u re ly th e o r e tic a l c h a ra c te r o f the dangers in v o lv ed in h an d lin g lead ed g a s o lin e .

Zinc-O-Lith Is Absolutely Non~Poisonous iais^a"'iii i ' 'ewirrtr i r.

Heporta on all cases of alleged lead poisoning. 9.

MAY 1968 DIRECTIONS FOR PERFORMING THE DAVIS TEST* FOR URINARY ALA The column- chromatography procedure which, you are about to perform for the determination of urinary delta-aminolevulinic acid (ALA) as an indicator for early lead poisoning is divided into three se quential phases: PHASE 1 Removal of porphobilinogen and urea from the urine which would inter fere with the analysis of ALA.

Joseph Lead Co.

Joseph Lead Co.

Coincident with the increasing scale of these operations, the toxic properties of the constituents of the antiknock compound gave first evidence of their true significance, when, without apparent warning, a group of workmen fell ill and two of them died with what is now recognisable as tetraethyl lead poisoning.

White Lead for Interior Woodwork- Carter White Lead' ,.

Page 1, bottom paragraph, line 1 - To "Lead salts" should be added the "oxides".

Y. 10017 TeW*>Aone: (lit) 7 0000 August 36, 1971 sobjecti new publicatioh cgAimc WITH LEAD GLAZES Tot Member* of the Uad Industries Association, Inc. i It has baac quite apparent fro recant publicity regarding potential and ~TtjP* lead poisoning problsm* that many hobbylata and art or atudlo pottara lack corract information about load bearing glaiaa.

Page 1, bottom paragraph, line 1 - To "Lead salts" should be added the "oxides".

Y. 10017 TeW*>Aone: (lit) 7 0000 August 36, 1971 s o b j e c t i new p u b l ic a t io h cgAimc WITH LEAD GLAZES Tot Member* of the Uad Industries Association, Inc. i It has baac quite apparent fro recant publicity regarding potential and ~TtjP* lead poisoning problsm* that many hobbylata and art or atudlo pottara lack corract information about load bearing glaiaa.