Document MGKQk64YpyokjxMGGMzr8wqe7

T. Marmor Page 165 1 United States.;. 2 Then They describe hew y ou could 3 see that sort of level ePdust. Theysay it's . 4 not visible at& million.particles,but it is 5 visible at 8 to 1ft million-particles* : 6 Then they go bnr'to the next. 7 statement which moves from asbestosis. Several 8 years ago* thatis pre-1964, Itwas reported 9 that there was'.du-intoEeaselntheJncidence'of 10 cancerous tumors, especially Inthe young. 11 associated with asbestosis. ^Recently there 12 have been-reports.'ofsome cancersoccurring in 13 individuals exposed to asbe'stos.dust, buthave 14 not have developed clinical asbestosis 15 distinguishing.the tworoutesby w.bich you can 16 get to luhg.,cancer;.one>with^aiid:one without 17 asbestosis.-. A; U. !>: -f.t- 18 It is believed by most 19 authorities.that these cases have been 20 associated with exposure significantly 21 exceed in gthe threshoIdJimit valuei'A.major 22 manufactureriof asbestos productswho also 23 mines asbestos basmot beenableto show an: i 24 increaseofrcancerous growth'in/men* working^.:.' 25 with 'dust concentrationswhere maintained at Page 167 1 materials. Where satisfactory containment to 2 stay within the threshold limit value is 3 impractical or impossible, efficient reliable 4 respirators as a final resort are used, are 5 available for the protection of the employee. 6 A program of environmental monitoring is highly 7 desirable to determine that threshold limit 8 value are not being exceeded. Therefore, they 9 ought to be testing, and will help, with the 10 testing of the level of the dust. 11 Concentration should also be 12 determined when dusting occurs in finishing 13 products. That's for their customers. While 14 initial dust determination should be made at 15 frequent intervals, once the level has been 16 established as satisfactory, the frequency may 17 be extended to occasional test to assure 18 continuation of a satisfactory condition. So, 19 they're giving them some advice about duration 20 of testing. 21 Then they go into an area which 22 is interesting. It can be interrupted in 23 different ways. Pre-employment and periodic 24 physical examination of workers are desirable. 25 These should include chest x-raysto ensure v.'-: > Page 166. 1 the thresboldivaiueic: ati. . . 2 : So. I think it!s anotherway of . 3 sayin g, if, as weknaw; riow!,<ifwe can keep.' the;. 4 dust Ievels. d0wii4olbelow 5 million particles. 5 then you can have asbestos .without the dangers 6 as a science at the time. That'S been changed 7 over time;,but'atthat time;tbat'sconsistent 8 with the industriahhygiene peopleandvariety .- 9 of otbervpeaplej;::< rflr V? " ,;v -.ii 10 ..ii:isith^tSttfficiehf?i>Does;thatu 11 give youAth& tone thatUtntalkingabout?' . 12 Q. <;:.Yes,butIhinotjnterested-an .' 13 the tone necessarily; bufcSpecifie examplesof 14 what you consider to be-s ! 'i ; . v > 15 A. H'ere it is,''Control of asbestos 16 dust isthereforfeneceSsary. This control . 17 methOds are the-Standard ones applicable to a 18 variety of dusty operations that include close 19 flow systems, Wet processes'where possible, and 20 adequate exhaust ventilationwhere openings in 21 the system'are necessary;"-' 22 ; . So, control the amount coming 23 out,; control,the exposure to it,.if it's out, ' 24 Pelletizing is sometimes used to improve the 25 handlingcharacteristics of otherwise dusty > v` Page 168 1 that the worker has no chest conditions prior 2 to working with asbestos, and to determine that 3 no lung changes are resulting'from-work with 4 asbestos. One interpretation of that is how 5 can they measure the impact of dust on the 6 workers if they don't know their baseline? 7 Someone could come with, a problem, and think it 8 was caused by their employment. 9 It is believed<at`the.moment that 10 the addition of asbestos at the proposed level 11 during the manufacture of paper products would ' 12 be harmless to the,consumer. Total dusting 13 would have to be well in excess of any levels 14 except to the consumer for the asbestos 15 concentration to approach the threshold limit 16 value. In conclusion, while asbestos dust in 17 excess of the threshold value is potentially 18 harmful as are many other dust encountered in 19 the industry, it is as readily controlled as 20 other such dusts and can be used safely with 21 appropriate precautions. 22 So, I read that to say to hot be 23 hiding the dangers, but to be preoccupied with 24 controlling levels. It rises from a concern 25 about industrial safety that is a practical 42 (Pages 165 to 168) POHLMAN REPORTING COMPANY (314)421-0099