Document 6wngnmDj3OVkbQvz373EGr3j9

il't d .t.iZ iJ.'iJ'n. L':e crrjier risk. There is aim ! rvidc:~i ' - dot! rtrponte lela.iunsliip fot ishesiuiit x) bfonttul ==-'{n *> llius. if lltt dust levels are Wept ilki* tilt r.r- '.lie (ilia of athetitffli d hion- iii) uncutl- i.-ould be eiy wilt. Tn: riii c:' ivi'-T-.; mesotheliomas hit i iiflatm hiiua to ft:: :7'- :spjutsbly highest *iil> Vocidoliie xj K-ven .:ysSo cases-clearly related 10 nkc;hyl!::: rai b:cr. repented. despite careful .act-. Tc: *-!. :*io?;tc probably Inr* between ocidatisear.: ahyvasi!:. T):r evidence fur a dose rripimse Iqu'cnship l:!i clear k :he cate of mesotheiior.us and aic (.`it ihrev.'ii ten value it more difficult to assess. > (be Aibrcw Rtcilstiofls IS(i9,s the' standard fat oriddiie it set at or.e-ceaih of (hat foe other types of ifcjUOI. ;0`d?ARlSOI<OFOCCUPATIONAL RISKS e'hji is the sr-aciiL-ie of th: risk of developing illliealth rom albedos" Sc* im;k index provide! i satisfactory veaictc ofinf.'iyM '-if'--Thus ih: exoett risk of death before i specified ape may t a cieful index for L'.os diseases causing sudden or sapid 'ealh. b'Jl it is an ir.a;pr>;priale index for diseases causing Ion} period a. disanxtty wit fuv>e shk..'t.n^.t} of life. The anecis associated with asbestos exposure fall into site first soup and aseesrosis tie second group. In different ocai- jjricrj! gr-jp coKransons ofmortality are easier in make han those of 3u; even for mortality the compiri- oas ut no: crtiir.-.fcy.'itd. Fot example, the more the election is Krairrd to a definable poop with a high past -xposure, the verse l-.s risk will appear. Aflnwjnee has Jso to be ca-ie for the effects of age, length of exposure, id how loss the occircatrotul croup ha: been followed. Whin such aliowarres tie made the excess nsonality from 'all ceres' ir. errors or workers heavily exposed to the note dr-:p: types of asbestos dusts in the past is closely cocpx'ib.'e to that ofcoalminers who have developed the leveret tom of ci:!-o:fcers' pneumaconiosis ur tlut of dpep-se: f.iir.-rr.tr. uf.a hive die highest rates of acca- dsnta: dtitha c: ir.y ccaupatnar. However, the exeesi morality frers 'a!i cartas' in these occupational groups is less.than sha". if malt suckers of twenty cigarettes and tatiic a cay cc.rtra.'td vit/, wi-i.t,After*. lr.3 u the c.'i'fc: ctatbs from 'ali causes', hut deaths free. *3::uah:meuitl'elimn.:. j-hes- tvs;:, or la:; .v :: a'.i't tv t.'.at of.tlic geneu: public, arc'"' co'.ric a::,-;". ..-.airly much more increased, fins it htaaiue rt .rjt a-r J ashconiis are extreir.cly rjie in !;: a. : -a irked with ishcsiut (i.ill'.i.m cintii.iits tht proportion of individuals exjv-ed V:.; -t.'.!.7 - d.-eart ar.d the excess nA l a pancalit i e.v: ~ ::i !a.!v..u,aalsi Computed with tht pa: : lin "ay be ttlaiivciy small and Ik* vicv.r.d c.v::.--a:;.. TH: PUT. A< iu in.:; ..a.:.'. d.ila-rt proof vi" the efficacy of new pi.;-..- a . .. .-.ai.tiitj tlw *akluy ol the cu::::,: :. ,':***, .j:: only c.-.'it ihi:*i ImXinc i-t-> : : li ; r'autuiacnmn; pns'csc ar-a a:.-.- . . ,.;: mjiriijli uwd. Inc mo- suetnents of eW ^jre:' the medical tccoids of those eapissed. Compui. now uuke it easy to siore this in/ormatiun, hut w< sldl need the foieiight and adwinkmtion to we (hat is is adi'cvcd . If it is no; dene we may still It dO years or so he in no belief position to answer important qucfliu.it which ate at ptesent unanjwe,able because of the paucity of past records. CONCLUSION The recent increase in the number of cases of asbcstosii and other diseases related'to pass exposure to asbestos it the result of relatively heavy exposures to the dust, particularly in parts of the asbestos industry not covered by the 1931 Asbestos Regulations.. Much new information about the biological effect! of asbestos has been acquired recently. The new Asbestos Regulations 1969 based on this information, if correctly applied, should greatly (educe the risks in the future. _. The selection of which types of asbestos to ose in new piocctc. mould take into accouut their biological effects if else risk of dust exposure is likely to occur during manu facture or in the use of the products. When working with extremely ftne fibres of any austiial which may become airborne, caution it needed. An cuminiliufl of the possible biological effects is required if the product is to be widely used and risks of damage to health arc to be avoided in the future. Prouf of the efficacy of pment preventive measures depends on much belter record keeping than has been the uk in die past. REFERENCES 1 Ntiro Leo, Americtn fnduurid Hypent Aaodttiaa Journal, VotXl.p /MftWSi : Mrrvether E. R. A. ltd Price (*. W_ 'Report on the effects of ibniai dun on tht kntfs and dun tappreuraa in Ok AdicuM InduiU)'. London. HUSO (1910) 3 Drccttcn W. C. Uiflavatlt J. U, Ld>ndt T. U Miher J. W, Sayers R. R, *A study of ubmotis in the ashesaot textile induuiy*. US Tnatuty DcpateaenL Public ItrilUa Sch ix Public Health lulteimko 241 tAupjn 19)S) a Mnewctbtt F.. R. A. Aaaual Repvra, Inspector of Factorten London, HUSO I Halt J .Ton Richard, pritivi Ir.m! t>/.'rinr^tel>Wiine, i'ot pSI tlViSl r* Knox J. F.; ItitmoS. Doll R..auJ Hilt I. D..Sritith to! '}.p 2v.-`/Itrnj; 2 1 S'lilinil'I. I_ o; the Annnccn .Urdini AiMeachon. IVrf .V./r/W // > U'dtu-r J. (',, (jil-or. I. C_. ttrny 0. anj Tunhrril V, grilht) U.'JujI Hulklit lo.'.'.'.p VlMIl i (!du>n J. ('. 'A0v.iv1 in-x'th barardt'. in Shapiro. IL A. lejiuui. 'Pr.fiuuocur.i.'h!'. hocrvdin^ of the laiematicaal funtVr.oce. laSsnr..'.tci^ 24 ApI*2 Stay I`l6q. p Hi. t ap.- Ton ere.. 0,.f..rd Coireriit Puv (1920) !L W.li.ii L 'Ashore* rvprarr iu South Africa'. (h*J. p ! Z3 11 I'unr.ui^uto II. S. and Punicinci R.. Xarurc, I'ol 2JJ. p JJZ UlUj I! [l.vUAr Matfurci ft.. reunun.SIisWy (jude. McDonald I. Sicmian'clii l,, and Ho.tiler f. K.. ItiW/nin dr Fkytfa- ttiMoftc Hrqwemur. I'ol \ p r.J7(li'll/ I.* 'LIlu.uU 1. Corbett.M.'Ucrutd Alonn U.. CihhaCrahmi U- .Svniijisiki Ixih. ;r.J Ko.utct llililri At&urff o/ /1:;i'i.'i.i.oij/ltr:`:r l-'ol.V. ft n"y/V?// la lodoin Udi... t'.i*io. tt'.. Mucllcri P. T.. McDondJ 1. C.. n...i.i.,1 f . |in.-eun K.yuh* uf Kririr:W'/ I.riu.-.r `.V;;v-n t' Si.ij'.m. |n.tiu:.Wi.'i No nvo. Faeturirc The Alv.'n. It --..I '.i...,. I'k.v | ,v.*i. HMStitlW.1i