Document nmEyYegx1xXKzZqwMRYmRwg31

LEAD INDUSTRIES ASSOCIATION *o c a s t 4ip svncrv n iw row it , m. v. j Septeoher 25, 1957 IlP KTOIiyg and sxrrrr bu l l s a Mo. i?5 To th* Mooter* of th* Lead In&istrlea Associations THRZSHOLD LIMIT rCP. LEW 0053 0? 1 Two authorities, th* American Standards Association and th* American Conference of Goverraaental Industrial Hygienists, are responsible for setting th* generally accepted "threshold Units* of atawapherlc contaminant4 to which workers In this country say be safely exposed. The work of the A.S.A. corr.lttee, which in clude* exhaustive consideration of all aspects of a given hasard, la of necessity confined to a relatively email number of the core Importantly haraful cootanlnants, while that of the gcvemocntal group has now set such Units on e total of 2iiO gases, vapors, dusts, fuses snd data, and tentative Units on 31 sore. ka has been stated, an 1 .TH. subcorslttes of which tha undersigned is chalman has proposed Increasing the long-accepted 0.15 threshold lladt for lead Vo ^ 0.2 allllgraas per cubic enter of sir, and baa under conalderatlon even higher Units for certain of th* less soluble lead ccnpounds. Vlth th* p&licatloo of their "Threshold Licit Values for 1957* In th* current (September) issue of th* k.U.k. Archives of Industrial Health, the Gov*ment*l Industrial Kyrianlst* have accepted the Increase proposed by the A.3H. group, and tha 0.2 *g/)P figure now becoees th* official governsentel standard. Th* benefit to industrial nanageoent of this 33 l/3f increase is too obvious to dwell upon, rurther relief Iron undue regulation Is to be hoped for as the w>rk of th* A.S.A. aubcoecitte# 1* continued. * Manfred Bowdltch Director of Health and Safety | i nweoWvW gWWP*W!i*