Show I 1 accident rates for mineral the safest branch of the mineral industries in which to would appear to be the and bluestone quarries according 0 data of the comparative rates for all divisions of these in destries dust dus rles tries compiled by the states bureau of mines for 1920 the lowest fatality rate was found to be tor for this class of quarries which employ a relatively email small number of men and in which all work is done in daylight tree free from irany dangers that are inherent in 1 mining fop for the same year tie tle highest fatality rate was that for gold silver and miscellaneous metal mines a group that includes all metal mines except those producing copper and iron and those in the mississippi valle that produce lea leal I 1 and zinc no reports of non fatal accidents at coal mines are received by the bureau of mines but for all othar branches of the mineral industry the highest injury rate was that tor for the lead and zinc mines of the sippi valley while the lowest wis that for marble quarries since the enactment of the corn sensation pens pensa atlon tion laws by nearly all of the states increased importance attaches to the accuracy and completeness of the statistical publications on in du accidents the insurance ranee premiums that operators of metal surgical lurg ical plants mines and guarri a have to pay are determined large y from a study ot of statistical reports relating to accidents in these in destries dust dus rles trIes it Is highly adv advisably advis isabl abi therefore that full and accurate data concerning accidents be report ed promptly by operators not only to aid la in the study and prevention of such accidents but also to assiat state compensation commissions aal an other insurance bodies in establish ing premium rates that will be fair and equitable As the practical usa usefulness 1 of 1 statistical reports are increased 0 diminished by the promptness or tardiness with which the figures are published the bureau of mines hopes that its annual Inqui inquiries pes rela ing to accidents may be filled out by all operators and re promptly in order that the value of the reports of the bureau on this subject may not be dimin dimini bed hed by any unnecessary delay in their publication li exchange 0 |