Document QXD69MMNDyqy0nM3qy9DDeeY5

3$ Twenty-second (,'onyress--Xationul Safety Council or cn the aTwfaff sill in inmt ot him. j'ou will usally find a varied cdltctioo of relic*. He will usually wet down hU sand file, but seldom hi* floor or gangway. When he is through with hb jshiit he usually grabs the air hose and proceeds to take a compressed air hath. And wc have the finmdry talirarr: he has many menial tasks to perform. When he sweep* nr uses a shore) he seems to be of the opinion (hat his efforts are judged liv the atimopherc he create*. If he doe* sprinkle Ote floor it is usually done very sioringly. Shakeout men and crane men seemingly give Htlle attention to the results of their ihouphtlctfnoK drab Imckrt* are okoIIt lifted to the Hmit of their lift and then itamfoL Many oimpamn have furnished equipment, such as positive pressure helmet* and respirator*, to employees wlio work in extremely dotty atmospheres. Tint it is surprising to note the ajipanmt lark <d interest cm the part of the employee fie whose protectkm this cqwpmrui Is furnished. Fram these remarks some mar say "Why shift the responsibilityXrt a bit. We have merely cited these few fact* as an mdkaltun that possibly we can improve the Mqim-pkn. If we make every man rvsptmsihlc for tie cleanliness in the vicinity in which he works, ami every ucenun rwpn>iWc for hi* department, and theu in tom make the superintendent answer for the ckanliness of bis shop, we will not have to worry ahout the increase in labor cost. After dust gels into the atmosphere, it ts. f course. very difficult and cxpnttiw to remove. Keeping the foundry floor off the ceding is a man-*ire jnh. Ventilation is a pauMcm everywhere. A diligent survey of our existing equipment may develop the tact that by small expenditures wc can improve conditions. Inspect your dust-arresting equipment.' See that the rapping device is in order, that the screens arc in mod condition. wc suggest that they ate rapped and the hopper* emptied regularly. Repair any leaks in pipe*. See that the valves dose prop*rly Orate* standd he kept m pond repair ami when emptying arrester*, respirators should be worn by the tnen ohse duty it is to perform this work. If refuse from the arrestor* i* not removed at once, keep it in containers or wet down until it is re moved. Above all. watch y*ur air vrlraitie* and make sure you are removing at the soorec a* orach *f tlw dust a* the equipment was orientally designed to da You pay tor the current the consume* to operate your suction equipment, therefore get the proper return for that expeoditure. l>o not store or alkur *and to acctnmdatf around your Masting equipment. Make sure you are receiving tlw pnqwr air change* in your sandblast mom. Inspect your mask* to the <*i air purging tlmasgh. The wearer is prone many limes to jnst crack or partially qa the valve. and when this is dune he is not getting the full protection for whictf tlte helmet was designed. Wc suggest that the helmet be remmed from the sandblast room and stored at the end of the day in a dust-tight cabinet, tifc tructmg tlte wearer tit clean Itefore re-using. In your cleaning rows wltcrc tumbling barrel* are used, we deal again with air velocities. Piping should he diligently inspected and krpt in good repair. Make sure trap* are jeTiorming the -wrvfce they were designed for. It might he well to keep floors m this department wet down. Remove tlte day'* atnmislatim of refuse at the end of the day's run. When cyctrars are used, make sure yon are nut exhausting at the level of window* which may be opened m other part* of your plant. We will have to look fra* further co-omrathei from the foundry equipment iranm- faciurvr* wb>* serve our industry. Equipment will hare to be sold to us net to Dust Problem in Industry 39 meet existing codes, but as dust-light a* human ingenuity can design them. After the equipment i* installed, tt will l thr jmrchaser's rrH*mihilily l see that it b regularly inspected and maintained to perform the service fix winch it was ixigimlly designed. And wc refey again to the employer's rr*|m*ibj}ity. When lie cion* hi work in a foundry, he should be willing to ro-operate and wear the safely devices which are provided by hi* employer. and it win he the purchaser** re*)rai<fliility to see flat tlie equipment is well eared for ami properly matntaincL Our industry b a basic one and wc hope that it will lung continue to lie essential. For this reason we want to assure thnx who are tilling oi the side line* that it b our determination and hope that, with the help of those in the medical professwst who have given so generously of their time in scientific study, we ran serai determine the actual extent of the hazard. In the meantime, while many diverse opinion* are faring brought into agreement, it is imperative that wc give more than passive asset*" t suggested measures of precaution or improvement. The accomplishment of worth while resuhs depend* upon the diligent and active cn-operatina of everyone concerned and tlte utilisation of all known means of prcventicm and control. Only through united effort can wc hope to accomplish an effective program which will give maximum of advantage to employer* and employee* alike, and to such an end we arc confident tlte foundry industry will continue to dedicate its earnest and onxknthnu effort*. How to Determine the Dost Content of the Atmosphere in Dusty Industries By DR. E. G. MEJTER />* >0'\- . -See Director. Industrial Hygiene Laboirtuiy, Employers Mutual Liability Insurance Co, Milwaukee. Win. The importance of atmospheric dust as an agent in the causstkai J respiratory disease has long been known. However, it b tally within the last few years tltat this subject ha* achieved medical and legal importance m dusty industries. IkcNtbc </ the extension of compensation laws to indude occupational diseases, and through an cvertncrcasuqt number of legal suits against industrial concerns by employees claiming disability due to dust inhalation, there is need for a severe attack on the problem of eliminating or otherwise combating the dost hazard. In order to intelligently control the dustiness of the air. the amount of dust present must he determined. With a given dust, two factors arc usually considered: (I) the number of dust {articles in a given quantity of air. which is usually expressed in million* id {articles |icr adze foot of air: (2) particle-size, usually expressed in a size frequency distribution curve, that ts the percentage less than stated size b plotted against the size of partides. Instruments Used for Determining Atmospheric Dusts Many instruments hare been devised for determining the dust concentration m air and it may be well to give a brtrf historical review of this subject. The South African investigators began using the sugar tube method fra the sampling of atmos pheric dust m 1911: the same method was used by the U. S. Bureau of Mines as early as 1914. By thb method a measured volume of the dust air is passed through