Document 5koanzbbqYN6GGNJ0zEpnYQOV

trations f leal! dust. Hliiig^lniwrvrT, is not productive of small particle* and is preferred over the um* of pow er-driven look If filing is not practicable, it will le necessary to provide Mime type of mechanical ventilation system for .he solder removal operations involving the use of power tools. Since the |ktmissible limit generally accepted for lend is 1.5 milligrams per 1(1 cubic meters of air (-`155 cubic fert) it will lie necessary to have an rllcetive sys tem t; provide adequate control Kngineers experienced in designing ven- lilation nvtrm> In nniirnl tuxii: iliafribiln .should bo cmiMillcd. otherw ise* .1 irlly )'lrni might Ur frilled ami lalrr found entirely ineffective. Frrqui'nlly .solder removal operalion* r.quire the use of portahie looU on large object ami a local exhaust ')>trrn would riot he elTcclivc, as it* the ease in the fabiicalioii of auto mobile Undo-*. General contamination of the facility with lead dust has been rliiniualrd hv I'lirlosing the entire opnation in a large Uxilh ami exhaust ing a Millicieut quantity of air from the enclosure to insure a constant in- waril llow of uir from the fael-iry into the booth. Under thrive circumstance* no practical amount of air could be removed from the laroth to red ice the lead concentration to a /.fc level, and therefore i; is neccssarj that the men working therein be provided with adequate personal protective de vices. Heat Treating High temperature* arc a frequent source of complaint from employ*?, in heat treat departments but conditions und their control arc tot within the subject under discusaioi. Fumes from r.yanide'pots are often associated wit): cyanides used a* fumigants or us the lethal igenl in death chamber;, and supervision as well as the employee becomes ap prehensive. Fumes from such -* source are irritating and I*cjusc of (hit projvrrty should l>c adequately ven tilated. The irritant nature of the furac is caused by alkali formed upon decomposition of the cyanide. Molten lead is ^nnctimea used as a hardening medium for raeUls. f requently charcoal or some similar ma terial is placed on the surfac*: of the metal to conserve heat and prevent THIS IS THE NEW ANTI-SKID TOE CUP "SANKEY" Foot Guards are now availablo with a ruobor anti-skid too dip %-inch longer^than formorly used. "SANKEY" FOOT GUARDS consist essentially of a motal shield to bo worn over the shoe whonevor the foot is in dangor of being either crushed or cut. The metal shield is dosigned to furnish a maximum amount of pro tection to the entire front of the foot--not merely the tool alone, but also to tho instop against hazordi from falling, rolling or flying objects, or from accidental tool blows. Write for liforah. e or a trial pair. EU.WOOD SAFETY APPLIANCE COMP ANY 219 SIXTH STREET ELLWOOD CITY. I ENHA. Kbr. UU llandy-Jack STAIR ST.UD n tha answer fo climbing problvmi, speeds u>i wort, radical cost., an 1 oi h more efficient wit* bo fear cl falling or itialn. Stand is Ideal fr cleaning, servicing, stacking, anil handling stock in and out of bin and shelving. Features incl.da itrongth, light .'eight, ample platform ipaca, wniil ht-g'i guard rail, liability, plus HaNDY- JACKS for a rigid itaad. ftiOt cf it..I tvbinc and i.I.clod oed, painted with two coats machinal j anamal. with naoprena whoili. ft i| available In various iwodats. Wilt* for furthar infe/innhon. r.laati ,ipplad far r. w. FIIEROH CO, INC. JWt l. Hayaa Ava., Cldaata $. WWl