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CMporlaon of IspHsgor and Raotrortatio ?raeijltaiar Srtboda
Bsrln^ tha part ton yaara, the ladartrial Baalth Serrlca of tha Matropolltan Lifa In#er5t Cwtpaay bo boor ttndylaff tha effort of tbs inhalation of asbestos dot ' by aapleyeaf la {dart* ta tbs Bttitad Stata# and tha Province of ftaabso* Canada, anfagad la tba s&ai&s of tha fiber, ontd tba nernfartara of atbartos product**
to X9S9 tba foarUaa artastdt Industry aaa prortioaUp naiafoxnad of tbo haaltb hasard a#oalted itb aabaatea dart, although a for British arttola# bod boob published dwsritisf oaaaa of ssbastosl* aeotraotad 4b fetfMsh plants*
U 19, Obrto tod Oil. nd Soteaald W fort tba firot datalled datortpUoa of nhat art baem'a* *ubwtM bodisa.* labaato* flboni u leaf *s 260 aieroa* wa dooewSbod oo aeowrriBf 1* rt Ism tim* of asfaooto* orkars* to thsrafor* Mdo an effort to dittdaga&Jfe aebaatos fiber# la our sellaotad air SMtplea, ad hllO ooad tbo laplsftr noftbad of acopUog for tha datarnlsattoa of dart ooarta or cenflaatratieof, *o also collected a large sartor of saaple* with tbo electric precipi tator M for oxaniaatloa of physical straetare cod dotaralsatioa of partial* eioos
Be r, hosovor, tmsuaceesfal Is fiodtsf sort flbroos material la tbo alr-boroe dost, and wry far of length froator than 50 niarans, and practically none of tba 260 aieroa slat* Be foes* tbat 50$ of tha dart vsa laaa tbaa 2*5 alcreas la the longest diaaetore, while 97$ me Iom than 10 oicroas* fhaaa particle# are of tha a*e diaeartcaal alaas a anoooatcrsd generally la ladartrial plants*
Lator* fultes M mi bis associates reported that sot store than 231 of tbo
elr-borae plant dart m froator tfeaa 10 alcrsas la tbo longest disaster, which agree*
with oar finding#* Boraw* ha bad anrvayed only on# of tha doses plant# and ninas
a had*
;. 0141
Paper given by Mr, i, ffe* Pefcaeil beor* tha Vwaaty-^ourth iaaaal' Sartiog of tha '
daartean Aesooiaiien of Indaatrial Pfcysiaian and Sargeoa# rltb iaarican Conference on Ooonpatlonal Biases#* and Isdortrlal SyglaM* dlartUad, Ohio Sxaut 5**#, 1929*
2--etrtty tbo
3
tat-- fnbUe Seelth Berri-- (*> i--ned eeeprabeael--
report on the --beat-- tesUl* ladoatrjr, cowriu* ooo of the pleat* had awrrejed
previously, Is addition to a--y other* la ether geographical Location*, la their
surrey they took iapiager eaapl-- for daat --t* ia order to evaluate the degree
of expnear* of aeplejo-- engaged at varioa* operation#, Oa peg* 23, of this report,
tbo fallowing atateaeat io aadet *fho relatively low per--stag* of fiber* la
--ceded doit explain* tbo --ell water of fiber* observed ebile asking duet count#
of iapingar eaapl--,* they deteretaed the pereostcd* of fiber* by aooa* of oaaple*
oelleotod with the Oeoa* jet duet counter, ebile Falfcea aad* bl* fiber dateraiaatio-- -- eteetri# p--elpltatoe oollaoted aaapl--,
Reseat ort published fey Oardser ^ ladtoate* that ebryaotilo fiber* la
ths* tbre* a&orea* i* -- oar* aetiv* tbu tb* *111--te --rpaaUrn (tele or --spates*) vhiok baa tb* a-- ebeoleal crap--ltiee bat ia easaivt ratbar tbas flbroae la structure.
Ba etato* that by lahatatl--, abryeetUa, greood to -- flaeao-- that It* flo
aty--tar* i* a* loaf-- reeogaiaafel*, ha* prodaeed no flferoale ia guinea pigs after a
year** expoasre, Alto, that all hie *b--rvatio-- eaggaat a oaehanl,--1 ratbar then a
chesioal fora of Irritatt-- aad that tbs raactlea to aabeetoo ia roetrioted to tbe
luac* bee-- only tbo-- or-- posso-- tfea pragwr atraotaro ead pbyalologieal --tlritjr
to pomlt
ttt a stiff fib-- fovelga bedy,
ft--tip tbo alaotraetatio dost sollaator fcse ba-- placed -- tb# earkat* tti*
davi-- eatploy* a arttertlafe *f leal--tieo aad *1--tr&o preolpltatl-- la entrapping
dost* It le highly effteieat la entrapping tn> dseta asd f--#*
It --o therefor* easeldared adviaabla to stady it* efficiency, -- --spared eitb
the iapiager, la deta--talag --but-- last, ith tbo object of dlrtiaguieblni fibers, ftUff cotton i* a--d la tbo --aafSetare of aobeet-- textile#, an atteapt u soda
to dlffareotiat* batos-- eottao aod --b--tea fibers* tb* Salted State* Fubtlo Health
- 0142
-3Stria* ^ la thlr atody van naaaeeoaeful la diatingoiaMng lsdlvKhMl typoo at flbare*
Tha ataadard iopliifor natbod of aaapllfig u asod, *ith an air ojactor to prartdm aaeiio, sod sasploe were takaa aiaaltaaeoaoly* and ei the lux looetioaa, and nt tho aaae alaTatioa, with aa aloetroatatie prooipltator*
Tha lnplaaar aaaplaa war* dflatad to tha roqeirad velma, and the oloetcoatatie precipitator aaaplea* mahod lata a ataadard aolaaatrifi And, and dilatad to an *4oal volsaw In preparation tor aoaatiaf la won laataaoea, farther dilation on oao or both doplleato aaaplaa ana oocttaaiy fcare taa hoary eenaantmfcina v&a eneouatared*
Ooaatiac aaa dona by the li|hk Hold aetfcod both for total dnat and for particle# dlatinfviahafcle aa fiber#, and both faetoro recorded, Grant# aava node iaaediately aftar eanpUaf, la order to raid alsapiaf aad aolstioa of partiolea la tho oaee of tho iaptaiar HapUti
Sanplra vac* tabaa t repreaeatatlra operation#, Hurae^umt tho plant, aad tbo fallowing tahlon aanaarata tho flndlaf*.
0143
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It will be noted that froa three to four tiaee the volue of air mu sasipled in taking alectrastatle precipitator aaaples, as coshered ritb duplicate ieptngar aassplac. inr5 total dust eooeeatratioBB agree for both sstbo&s of oeapllng ia the preparation, carding, mile spinning, sad Reeving departments*
Spooling sad twisting are dose la the ease rose adjacent to looaa, while the winding i done ia a rooa next to the sale spinning frame* Pollutions fros these adjacent operations say account for the variation la tho total dust counts in these sasples* There Is also the possibility of the amber of ample# not being sufficient to sliaiaate personal or other discrepancies*
It is interesting to note tbs increase la the number of fibers counted la going fras the preparation deperteent, then carding, spinning, tvletiog isto the final operatic of weaving*
Preparation Department Carding Department Sale Spinning Departs** Spooling, Twisting, and Hading Weaving
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The United States Puttllu Health Service gave percentage of fibers et crashing and picking operation* only, la the sees* room, sad an figure far spinning* TTaa our observations of the type of operation ve believe core fibers nay be thrown off ia eule then In ring fran* spinning* be found sore fiber in the spooling, twisting, and
.L 0148
winding
the United States Public Health Serflcs report#, although the report
is on twisting only*
Again ve fall close to the United States Public Health Service average af fibers
in the weaving department. Of coarse, ve oust consider the three eethods of eaopling
involved in coopering these figures.
CCiSCLOSItfJS 11though this report Is Xlolt*d to a relatively snail mother of cooperative
saaplee, it nay he concluded that in the deteru&nat of asbestos dust in asbestos textile sills#
1. The IspiBge? sad electrostatic eethods of aesraliag agreo ia the determination of total dost concentrations*
2* That the electrostatic precipitator deee entrap nor* fibers - tbaa the lapiager* There is, bosever, the tgoestlca of
aoy hygienic significance ia the lacrosse dstarained*
0149
1. Cooz*f S R*# ed Sill, C. Toluae 47, ?o 2?2*
- 10 -
aunwl Boysl Microscopical Society, Sept* 1927,
2. .`icBonald, S, - British Medical Joaroal - 1927 - ?oltns* 2 - ?* 1025
3. Urinker,
TboaacR, R. X., and Fltehet, S. 8* - Ataoapberi c Particulate
Setter. IX - Tho {Jm of Klootrle Precipitation for Quantitative .veteraj action*
and Microsaoyy* - Journal Ind. Hysiece - Toloa* 5, So* 5, Page l2 (1923-24)
4. Fulton, K. 8*, Booley, 4*, JUttfcoee, J. I,, end Hants, R* L. Asbefftoai* Part IX. the nature and anauot of dost encountered in eaheatoa fabricating plants* Fart III The Effect* of exposure to dost encountered in e*ba*to* fabricating pleat* a the health of a group of wortere* Pnti*ylTni* Deoartaent of Labor and Industry - Bulletin 42, 1935*
$. United States Public Sealth 2ull*titt to* 241 * A Study of Aabectoai* in the Asbestos Textile Industry - 1938 - Pag* 126*
6. Gardner, Leroy V* - tlology of Fooenosoalosi# - Journo! of the Aaerictai aediccl Association - T-aluo# XXX - Page 1925-1936 - Soveaber 19, 1938,
0150