An open- screw con- veyor leading to the basement from the floor:.above also contributes to some'of the .' dust existing here. .

Before plunging into this, however, I should like to have your advice as to the proper lines of procedure so as to avoid crossing any administrative lines or stirring up trouble without leading to any constructive result.

Provision must be made to prevent freezing of the water in the tank as well as in the pipe leading to the tank.

. - Conduit (G) is of cast-iron construction, assembled with lead joints and is water-tight, if properly laid.

MAC ppm mg/m3 Z37.1-1941 Carbon monoxide 100 110 Z37 2-1941 Hydrogen sulfide 20 280 Z37 3-1941 Carbon disulfide 20 620 Z37 4-1960 Benzene (benzol) 25 80 Z37 6-1948 Manganese 60 Z37 7-1943 Chromic Acid and chromates 01 237 8-1943 Mercury 01 Z3710-1960 Xylene 200 880 Z37 11-1943 Lead and certain of its inorganic compounds 015 Z37 12-1960 Toluene 200 75 2 Z37 13-1962 Nitrogen dioxide 5 94 Z37 14-1944 Methanol 200 26 0 Z37 16-1944 Formaldehyde 10 12 0 Z3717-1957 Carbon tetrachloride 25 157 Z37 18-1949 Methvl chloride 100 200 Z37 19-1946 Tnchloroethylene 200 1,070 Z37 23-1982 Methvlene chloride 500 1,700 Z37 27-1981 p-Dichlorobenzene 75 450 (Text continued from page 40-3) Documentation of Threshold Lantt Values, the Hygienic Guides published by the Ameri can Industrial Hygiene Association (A1HA), and the articles of W.

PHILADELPHIA- LABORATORY RELEASE LETTER NO. 1110 BKCQKBHNDATION FOR RELEASE OF LEAD-FREE OUTSIDE iVHITE 301-867 Composition: This product has the same vehicle as 301-863 which contains 35# refined soya oil in total oil, 15# bodied linseed oil and 50# raw llnsoed oil.

This study would lead to improved benzene-driven, health-based regulatory (e.g., ambient air, water & occupational) standards worldwide, by providing the regulatory and scientific communities with information for more accurate assessment of the risks from exposure to benzene.

These data raised the suspicion that cement dust may lead to the development of gastroduodenal ulcers.

The greatest dust risk occurs in the grinding of natural graphite, for vhich evidence is presented to shov that thi3 can lead t 0 tj fUc'.li

B e a t t y t h a t he had made a la r ge number o f t e s t s on f i l l i n g s t a t io n a t t e n d a n t s , th e r e s u lt s o f w h ich w i l l be p u b lis h e d in abou t a y e a r , and show a b s o lu t e ly no hazardous e ffe c t o f lead ed g a s o lin e .

Gaertner, who has been vice president of National Lead Co. of Pa., is on a six-month leave of absence due to ill health. .BUSSE IN CHARGE AT PITTSBURGH E.

He would have been employed by the Eagle-Picher Company except for the lead absorption difficulty.

This man was a valued employee and that is tne reason for seeing that he1 a number of examinations by Leading men in the medical field, Information which ulted from those examinations showed no indication of an occupat ional disease and vre are, frankly, shocked and azmaec to receive tne. information on the findings of the .-.23 llinic.

Ducts leading into the fan room or from the fan, should be acoustically treated on the interior and in special cases, should be pro vided with sound traps or filters.

tfce market in the Spring, was the main subject on the program of the meeting of the White Lead Sales Committee held at The Knoll, Boonton, N.