File:Practical preventive medicine (1920) (14596573710).jpg

Identifier: practicalprevent00boyd (find matches)
Title: Practical preventive medicine
Year: 1920 (1920s)
Authors: Boyd, Mark F. (Mark Frederick), 1889-1968
Subjects: Preventive Medicine Public Health
Publisher: Philadelphia and London, W. B. Saunders company
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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is more susceptible to gas than human beings andwhen it topples from the perch in its little cage the rescue men know they havegas to reckon with. (G. H. Taylor: The Survey.) windows by platforms. Regular fire drills at unexpectedmoments will do much to permit an orderly exit when dangerthreatens. Lack of judgment in the location of the stair wellsand elevator shafts frequently does much to spread a fire andprevent the escape of the inmates. If exit doors open outwardtheir jamming by a panic stricken crowd will be largely pre-vented. Fire risk from inflammable or explosive gases willbe much lowered by adequate ventilation. Automatic sprink-lers will usually keep blazes from spreading, and extinguishthem in their incipiency. 16. Electrical Accidents.—Electric installations offer manyopportunities for accidents of a serious character. Danger HAZARDS OF OCCUPATION 243 signs should be freely employed and dangerous parts of equip-ment should be painted red. Only experienced and competent
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Fig 103.—Air-lock on top of caisson. In sinking foundations for sky scrap-ing buildings men go down beneath the water level and work in compressed-airchambers or caissons. The air pressure is frequently more than three times thenormal fifteen pounds per square inch. Workers, if released gradually duringdecompression in the air-lock avoid the bends or compressed-air illness.(Industrial Dis. Am. Labor Leg. Rev., 1912.) men should be allowed in rooms where dangerous apparatus orwires are installed, and no man should be left alone with ahigh tension current. Floors that are in dangerous proximity 244 PRACTICAL PREVENTIVE MEDICINE to wires at high tension should be covered with insulatingmats. No repairs of mains or wires, or examinations or altera-tions should be permitted while they are under a high tensioncurrent. Switches should be provided with tell tale lamps, andwhen a switch is thrown open it should be tagged, and theswitch kept open until the completion of the necessary work has

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