U.S.DEPARTMENTOFLABORBUREAUOFLABORSTATISTICSROYALMEEKER,CommissionerBULLETINOFTHEUNITEDSTATES\jWHOLE^ICBUREAUOFLABORSTATISTICS/''“(NUMBERINDUSTRIALACCIDENTSANDHYGIENESERIES:NO.13ACCIDENTSANDACCIDENTPREVENTIONINMACHINEBUILDINGLUCIANW.CHANEYandHUGHS.HANNAAUGUST,1917WASHINGTON,GOVERNMENTPRINTINGOFFICE1917DigitizedforFRASERhttp://fraser.stlouisfed.org/FederalReserveBankofSt.LouisADDITIONALCOPIESOFTHISPUBLICATIONMAYBEPROCUREDFROMTHESUPERINTENDENTOFDOCUMENTSGOVERNMENTPRINTINGOFFICEWASHINGTON,D.C.AT25CENTSPERCOPYDigitizedforFRASERhttp://fraser.stlouisfed.org/FederalReserveBankofSt.LouisCONTENTS.Page.Summary......................................................................................................................7-14Purposeofinvestigation.........................................................................................7Scopeofthereport...................................................................................................7,8Accidentseverityrates...........................................................................................8,9Accidentratesfortheindustryasawhole........................................................9Accidentrates,bycharacterofproduct.............................................................9Accidentrates,bydepartments...........................................................................9Course-ofaccidentratesoveraseriesofyears..................................................10Effectofsafetysystemsuponaccidentoccurrence.........................................10Accidentratesforalargemachine-buildingestablishment,byoccupations.........................................................................................................................10,11Importantcausesofaccident................................................................................11Natureofinjury.......................................................................................................12InabilitytospeakEnglishasrelatedtoaccidents..........................................12Accidentrateshigheratnight.............................................................................12Distributionofaccidentsbymonths...................................................................12UnitedStatesGovernmentarsenalsandnavyyards....................................13Methodsofaccidentprevention...........................................................................13,14ChapterI.—Industrialaccidentrates........................................................................15-27Definitionof‘‘accident”......................................................................................15,16Themeaningofaccidentrates..............................................................................16Accidentfrequencyrates.......................................................................................16-18Accideatseverityrates...........................................................................................18-27Fatalities............................................................................................................19,20Permanenttotaldisabilities..........................................................................20Permanentpartialdisabilities........................................................................