408 0.

474 LOUIS SCHWARTZ titis.

680 JEROME R.

686 JEROME B.

LIGHTING -FOE SEEING 759 SLsuch factors must be kept in mind when lighting recommendations are ^nffdewEconomic aspects, of course, are important and may require some compro^{nsvglNevertheless, unless proper weight is given to ease of seeing, visibility, and ___ dfil visual capabilities, light and lighting will not be accomplishing the Inriirlary pmpose of providing quick, accurate, safe, and comfortable seeing.

<ms& ;14 INDEX sequence of, 272-73 Abattoir workers, skin hazards of, 471-72 two-stage, 263, 266, 274 Abrasive blasting, ventilation, 301 effectiveness, 239 Abrasive-blasting respirators, 349, 353, 354 electric precipitators, 255-62 Absorption, of gases and vapors (curves), 157 single-stage high-voltage, 257-58, 261-62 by ingestion, 162 two-stage low-voltage, 260, 262-63 by inhalation, 150-61 factors in selection, 278-81 intermittent exposure effect on, 158-59 cost analysis, 280-81 through the skin, 162 fire or explosion hazards, 279-80 Absorption coefficient, sound intensity, 641-43 incompatibilities, 278-79 Accident(s), heat and, 110-11, 790 power requirements, 281 illumination and, 769-73 versatility, 278 prevention, human engineering in, 57-59, filters, 247-55 109-10 absolute, 255 Acetone, distribution coefficient, 154 cloth, 253-54, 256-59 skin absorption, 162 gas or vapor adsorption, 255, 260 Acids, organic, in air pollution, 424 impingement, 251-52 primary irritants, 449-50 paper, 252-54 Acoustical materials, 645 Service of, 276-77 Actinic rays, and cancer, 469 viscous, 252-53 Adsorption and weighing, gases and vapors, performancel:Specification, 237-40 187 1 efficiency; "Aefo3isp6fsions, see jQf cIiaruhg" ....... " referent' dfffiqplty ofseparation, 239-40 Aeroembolism, 615 separatibn!'

A. it.

-59. ' 72.

mtra ten secuig arte?

1020 Special Report: Asbestos and Cancer u Canad.

ASBESTOS EXPOSURE-SEUKOFF ET AL 111 additional potentially carcinogenic substances been identified among the other materials used.10 Heavier or even lighter exposure may result in different degrees of risk of neoplasia.

3 2.

mm APPENDIX A / r.

pc or operator )f vehicles dealt rakes it difficult sosure could be Tore carried out e passenger car :ted during the ent to the one tntit of the afternoon.

(LuJ Reprinted from the Archivee of Pathology April 1910, Vol. 09 Copyright 1970, by American Medical Auociolion i'lfOPtltari, ^ubUphtd JlLjf'f United Stotec of America 1/ r<Ferruginous Bodies*^ in Guinea Triigi s Fine Structure Produced Experiment&llyJProm Minerals Other Than Asbestos John M.