Trv using An.uond White Lead your next job!

Louis; 2240 24th Street, San Francisco; National-Boston Lead Co., 800 Albany Street, Boston; National Lead & Oil Co. of Pa., 316 Fourth Avenue, Pittsburgh; John T.

From National Lead.

Lewis Ethyl Gasoline Corporation Chrysler Building New York, New York Dear Oscar: In reply to your letter of June Ik, the question of whether or not a lead hazard exists for workmen who work on the top of floating roofs in the down position, depends upon the extent of the contamination of the scvie and sludge with organic lead and the extent of the ventilation.

Baltimore and Ohio Ballroad Comjpany '- Freight`oharges on 100 bbls.ehlte lead as per Freight Bill Bo. 160436 of the Baltimore and Ohio 8.

NATIONAL LEAD CO

Lead Industries Association, Inc; 292 Madison Avenue New York.

am S3 NATIO NAL LEAD COMPANY, ST.

CtMrraa R Rou, Lead lirfaofim Awnnifw^ New Tk.

820 INDEX INDEX 821 Infrared radiation (Continued) in lighting, 787 protection, 719-20, 787 Infrared spectrometry, in gas analysis, 189-90 Insecticides, as skin irritants, 475 Institute of Inter-American Affairs, 14 Insulation, for heat control, 801-2 Insurance groups, and industrial hygiene, 8, 9, 53 Interferometer, in air analysis, 179-80 comparison with combustion apparatus, 185-86 International Commission on Radiation Pro tection, 703 International Labour Office, report on Euro pean industrial hygiene, 11 Intestinal gases, in decompression, 601-2, 610 Inverse-square law, radiation protection, 709- 10, 711 Ionisation chamber, in radon measurement, 730, 731 shortcomings in radium detection, 729 Ionising radiation, instruments for, 210 Iron, in gamma ray protection, 710 radiation protection coefficient, 717 Iron workers, skin hasards of, 475 Irritants,..defined, .145 primary, 449-51 Irritation, nasal, scale, 175 respiratory, and air pollution, 414-18 Isoamyl alcohol, distribution coefficient, 154 Japan, Industrial Hygiene Association, 14 Jaundice, 487, 497 Jaw necrosis, in radium poisoning, 723 Job analysis, 60-63 time and motion study in, 61-62 Journal oj Industrial Hygiene, 6 Kinesthetic displays, 93 Kitchen design, 132-33 Konimeter, 192 samples, counting, 200 1-------------------------- :------------------------------ ----------------------------------------- Labor legislation, 4-5 Labor unions, and industrial hygiene, S Lacquerers, skin hazards of, 478 Lamps, filament, 759, 774-75 fluorescent, 760, 775, 778 germicidal, 760-61 infrared, 761 mercury, 759-60, 774-75 spectral distribution of, 758 Larynx, 362-63 Laundries, heat exposures in, 789 Laundry workers, skin hazards of, 475 Lead, in blood, 26-27 in gamma ray protection, 710, 711-12 poisoning, effect on eyes, 498 first record, 1-2 urinary record, 24-25 Lead acetate, skin absorption, 162 Lead equivalent, defined, 716 Lead fume, impinger efficiency as collector . 191 Lead line, 502 Lead oleate, skin absorption, 162 Lead salts, skin absorption, 162 Leather tanners, skin hazards of, 475 Leg reaches, 77-78 Legislation, air pollution, 435-38 labor, 4-6 Leucopenia, from radiation, 701, 706 from radon, 728 Light, sources, 759-61 Lighting (see also Illumination), benefits of 761-74 brightness in, 752-55 color-in, -755-- --......... - -- ..... comfort evaluation of systems, 755 general, of industrial areas, 774-78 infrared radiation in, 787 luminaire selection, 774, 776 maintenance, 778-80 quality of, 752-55 supplementary, 780-87 black light, 784 colored light, 784, 786-87 diffuse, 780-82, 783 directional, 780, 781. magnification and projection, 784, 785, 786j -polarized,_784,_7.g5__________ _ for visibility equality, 750-61 Light output, depreciation due to luminal^; dirt, 779 " dirt and dust effect, 778 Limbs, abnormalities of, 503-6 ms ~sEigmataTlfr482- Limits, explosive, defined, 511, 555 , /.

Fade lead dlico chronate la covered ly A.S.T.X.

Due to the danger of lead poisoning from the careless handling of gasoline, every effort should he made to prevent and control this occupational hazard* 2.

Tha second lead soundproofing job was in our mb office.

Special Ptusers - Contain axca*a lead drier or lead pignanta.

Where any made and corc, however, to limits are dis- POTENTIAL EXPOSURES IN INDUSTRY 2243 Armature Workers Lead "tinning" baths and lead pots, when small and equipped with tempera ture controls, may not present serious lead exposures.