Document dnDBRDLyZBYnOOg6z2LLEjn36

1)1goat of Industrial Hygiene.. 13. 458 Cerebral Vascular Lesions After Carbon Monoxide Poisoning. Queries end mT ^ Hotes. J. Am. Wed. Asaoo.. 116. 481 (February 1. 1941). Poisoning by carbon monoxide In a laborer egad 37 was followed in 3 weeks by severe bead pains and vomiting, after apparent recovery, and 7 days later a similar attack proving fatal, was clearly a ease of cerebral hosorrhage. No dear reply can be given to the question whether the poisoning was responsible for the cerebral hemorrhage, but fatty, hyaline and other retrogressive change of vessel walls are known to follow carbon monoxide poisoning. An existing crterlo8derosi8 enhsnoes the effect of carbon monoxide. 459 Carbon Monoxide -- A Domestic and Occupational Hazard. W.H. Schulze, Medico] Clinics of H. America. 23. 437-52 (Marsh. 1941). Where exposures continue over a period of several hours the oaxbon monoxide concentration In air should not exceed 100 parts par million parts of air. An poisoning Is manifested by a progressive paralysis of the central nervous sysl ultimately resulting In unconsciousness and death. Subacute poisonings are characterized by such subjective symptoms as headaches, nausea and vomiting, weakness, dimness of vision and dizziness. Continued educational methods designed to acquaint the publlo with the sources, symptoms and dangers of eaxboi monoxide poisoning both In the home and In Industry should help to reduce the large ninker of fatel end non-fatal poisonings caused by this gas every year* 460 Ozone In Ventilation and Air Conditioning. T.R. Crowder. Proa, of the 20th Annual Meeting of the Kedieal end 8urgleal Section of the Asaoo. of American Bnilroada.Hev York, June 10-11, 1940. pp. 123-131. Insofar as the physiological affects of ozone have been measured they era p** ponderately harmful. Even such minute quantities ee 1 port per 10 nllHen pa; of air may be definitely Injurious to the respiratory membranes. Bacteria caj be killed by ozone, if moist; but btaaa beings are Injured by conoantraticns far below those necessary to bring this about that the fact la of no preotlem importance is hygiene or therapeutloa. The deodorizing effect of ozone Is.no* reel, only apparent; since It accomplishoe its purpose by paralyzing the aen of smell. The author concludes that ozone has no proper place in ventilation air conditioning. 461 Carbon Monoxide Poisoning. A.ELBaggenstoea. Nat.Engr., 44, 211-2, 223 (Maroh 1940). This is a general paper on sources of carbon monoxlda, Its, mode of action, sy toms and prevention of poisoning, and treatment for persons overcome by the g 462 Hew Dangerous la Gas? W.B. Paton. Can. Min. I., <jl, 527-9 (August, 1940), The author answers the question, sometimes asked In just that form, by saying "As dangerous as It Is permitted to be*" Tbo tors "gas* la used by mining ns to denote any noxious or inflammable gas encountered In underground workings. -In Canadian mines, such gases consist of carbon monoxide, carbon dioxide, hyd gen sulfide, sulfur dioxide, nitrogen peroxide end methane* Probably all fatalities are caused by carbon monoxide* The affects of sash gas are discus with apodal attention to carbon monoxlda. Suggestions ere given for reduola the hazards. 463 Protection Against Poisoning in Mines. A.H. Vossenaar. Xngenleur. 58, 0.51 0.55 (August 9, 1940). (Dutch). This Is a general paper on tbo properties of tbo most ermnon mine gases, und the usual classifications of suffocating. Irritating, paralyzing and truly poisonous eases, with brief consideration of protective measures.