FILE NAME Allied Signal Bendix ASB DATE 1973 June DOC ASB063 DOCUMENT DESCRIPTION Memo - OSHA Standards RE Asbestos e we e ew es ' : rahe TS ea PEER he eel: rd raaLht yr anise ra lee bane ewe ie iow, Enction ferisaaMrattextMattex op aa p mes 7, vit. ; Date June 1973 | Fullsun No 6 73-6 Subject O.S.,/.A.Standards - Rai Asbestor : oe ; . .

FILE NAME Insulation Contractors & Distributors ICD DATE 1970 DOC ICD020 DOCUMENT DESCRIPTION Insulation Hygiene Progress Reports from the Insulation Industry Hygiene Research Program _nvironmental Sciences Laboratory SINALE MSM SCHOOL MEDICINE of The City University of New York INSULATION HYGIENE PROGRESS FROM THE INSULATION INDUSTRY REPORTS HYGIENE RESEARCH PROGRAM Irving J Selikoff M.D.

FILE NAME Manville JMA DATE 1977-1980 DOC JMA281 DOCUMENT DESCRIPTION Memos - M Mexico 1977-1980 Manville Internal Correspondence To H.

FILE NAME Keene KNE DATE January 25 1973 DOC KNE059 DOCUMENT DESCRIPTION 1973 Jan 25 Letter to Bechtel Inc regarding Asbestos Cal Products BB couetzEvetsfi - nONTS: TF OSE CONTENTS DISCLOSED CONTENTS c CONFIDENTIAL CONFIDENTIAL CONFIDENTIAL CONFIDENTIAL CONFIDENTIAL CONFIDENTIAL ; 7 ; CONTENTS LICA I CONFIDENTIAL CONFIDENTIAL CONFIDENTIACOLNFIDENTIAL CONFIDENTIAL CONFIDENTIAL VENT VENT CONFIDENTIAL ARE SR VENT VANT ERAS January 25, 1973 Mr.

FILE NAME Quebec Asbestos Mining Association QAMA DATE 1976 DOC QAMA020 DOCUMENT DESCRIPTION QAMA- A Brief History > DEN 1314 Code 90 81 QAMA BRIEF HISTORY oe We are grateful to Paul A.

FILE NAME Talc TALC DATE 1973 Nov 28 DOC TALC442 DOCUMENT DESCRIPTION Memo RE Talc - FDA Proposed Regulations JM Manville 7 | / Internal Correspondence F.J.

FILE NAME Talc TALC DATE 1975 Feb 28 DOC TALC087 DOCUMENT DESCRIPTION Letter to Barry Castleman from Dr.

FILE NAME: Asbestos Cement Pipe and Sheet (ACPS) DATE: 1973 Dec 10 DOC#: ACPS018 DOCUMENT DESCRIPTION: Letter from The Center for Science in the Public Interest to the EPA - Request to Ban Asbestos-Cement Pipe in Water Systems (202) 332-6000 CENTER FOR SCIENCE IN1THE PtJP/UC INTEREST .

FILE NAME: Asbestos Cement Pipe and Sheet (ACPS) DATE: 1976 Mar DOC#: ACPS020 DOCUMENT DESCRIPTION: Unpublished Report - Technological Feasibility and Economic Impact of OSHA Proposed Revision to the Asbestos Standard Technological Feasibility and Economic Impact of OSHA Proposed Revision to the Asbestos Standard Prepared for: . .

FILE NAME Brakes BRK DATE 0000 1975 DOC BRK047 DOCUMENT DESCRIPTION Gov Info Booklet - Brake Repair Work Can Be Hazardous to Your Health x Preventive HealthCare _ BRAKE REPAIR WORK Public Interest if Columbia Department ofHuman Resources Healthand Hospital Administration - Occupational and Employee Health Program - LUA Center for Science in the Public Interest So for time. timecould result in asbestosrelated | disease later on Centerfor Science iinnthe Public InterstInterest at202 332-6000332-6000

FILE NAME Brakes BRK DATE 1975 July 21 DOC BRK201 DOCUMENT DESCRIPTION Minutes of Occupational Exposures to Asbestos Dust From NIOSH Brake Meeting GM GEN - 000065 Minutes of Occupational Exposures to Asbestos Dust From Brake Meeting NIOSH dated July 21 1975 a] a J Me bettie tty AnatDs. detct wa. dite ey *~ + DEPARTMENT OF HEALTH EDICATION AND WELFARE CDC NIOSH Minutes of Occupational Exposures to Asbestes Dust From .

FILE NAME Brakes BRK DATE 1975 July 23 DOC BRK202 DOCUMENT DESCRIPTION Internal Memo RE NIOSH Meeting about Dr.

FILE NAME Brakes BRK DATE 1977 Jan DOC BRK067 DOCUMENT DESCRIPTION Journal Article - Asbestos Content of Dust Encountered in Brake Maintenance and Repair - Proceedings of the Royal Society of Medicine Oe ane - Volume 70 Number 1 January 1977 Proceedings of the Royal Society of Medicine Management Management Management Pulmonary Pulmonary of Tuberculosis Pulmonary Tuberculosis Medicine the Crossroads page 16 ' 4 page 4 Published by The Royal Society of Medicine 1 Wimpole Street London W1M 8AE ee ** and Academic Press ** London New York San Francisco DATS the the om 32 Proc roy Soc Med Volume 70 January 1977 irregular or nodular interstitial opacities of limited extent and intensity on their films Silica or asbestos exposure had occurred in 22 of the work force examined Such exposures had occur- red in various job categories in the titanium facility as well as in prior occupations Eight of the 26 workers with abnormal rays had had silica or asbestos exposure No clear pattern of restrictive disease in relation to ray findings could be seen Summary and Conclusions Clinically significant or symptomatic pulmonary disease was infrequent in a survey of 207 currently employed production workers in a plant producing titanium dioxide from ilmenite ore Evidence of airways obstruction was found in 47 of all workers including 38 % of workers who had never smoked regularly This abnormality was not frequently accompanied by disabling shortness of breath Despite the fact that approximately 90 of the group of workers examined had worked for 20 years or more radiological changes consistent with pneumoconiosis were relatively few and unrelated to the respiratory abnormalities observed We conclude with the caveats inherent in a prevalence study in which only half of the eligible long workers were examined that occupational exposure associated with titanium production by the sulphate process may commonly cause undesirable irritation of the upper and lower respiratory tract and functional abnormalities of the lung but does not result in an important incidence of serious occupational lung disease Individual workers may however suffer unwanted abnormalities These findings of course do not speak to the presence or absence of increased risk of malignant pulmonary disease This is being separately studied Acknowledgment This research study was sup- ported in part by National Institute for Occupational Safety and Health Contract 99-74- 91 Asbestos Content of Dust Encountered in Brake Maintenance and Repair by N Rohl PhD A M Langer PhD R Klimentidis BA MS Wolff PhD and I J Selikoff MD Environmental Sciences Laboratory Mount Sinai School of Medicine of the City University of New York New York NY 10029 Asbestos in Brake Linings The composition of automotive brake linings includes chrysotile asbestos fibre which comprises about % of the friction material The exposure of garage workers to asbestos during brake lining maintenance and repair has recently been investigated Rohl et al 1976 This important issue was studied because a large labour force is potentially exposed over one million people in the United States alone Consequently it was thought essential to determine if chrysotile fibre survives braking and to measure the amounts liberated as an aerosol during maintenance and repair oper- ations _ Investigators in the past have expressed doubt as to whether chrysotile fibres can survive the high temperatures generated during braking Lynch 1968 Hickish & Knight 1970 Hatch 1970 Chrysotile is alleged to be subjected to temperatures in excess of 800 which would cause its thermal transformation to forsterite or to an amorphous magnesium silicate phase While hot spots up to 1000 may be attained Carroll 1962 the heat distribution is nonuniform and other processes in addition to thermal wear contribute to de- gradation of brake linings For example abrasion and macroshear may cause physical breakdown Burwell 1957 Mizutani et al 1973 Accordingly brake lining disintegration by these mechanisms may liberate partially altered or even unaltered chrysotile fibres REFERENCE Miller A Chuang M & SelikoffI J 1976 American Review of Respiratory Diseases 113 Suppl p 89 abstract Analysis of Brake Drum Dust Initially ten samples of automobile brake drum dusts from brake repair shops in New York City . were collected and examined by optical microscopy ray diffraction transmission electron mic- roscopy and energy dispersive ray spectroscopy to determine the presence of chrysotile Optical microscopy The detection of chrysotile in brake drum dust by optical microscopy is hindered by the nature of the debris matrix consisting largely of opaque pyrolyzed phenolic resin binders and road dust Chrysotile particularly small fibres has low optical relief and low birefringence which further hinder its identification Only in rare instances have large fibres with optical Section of Occupational Medicine 33 Table 1 Chrysotile asbestos content of brake drum dusts ray diffraction scan Great Britain West Germany France United States of America Finland Western Australia No. samples 8 8 1 No. positive 6@ se 1 10 10 5 3 7 4 39 29 Weight percent Mean Range CNC 0.7-2.3 CNC 0.5-3.2 CNC FE FE FE -2.4 = 2.4 1.1 2.0-15.1 0.8-2.5 0.5-2.3 @ I sample possibly positive Transmission electron microscopy No. positie 8 1 10 S 7 39 properties consistent with chrysotile been observed with this technique ray diffractometry The ten brake dust samples were analysed by ray diffractometry in both continuous and scan mode The diagnostic reflection selected for chrysotile 3.66 A hkl 004 was scanned in the count mode By comparison with external standards the amount of chrysotile present can be determined Chrysotile reflections were observed in all samples with weight percentages estimated to range from 2 to 15 average 4.5 Lead compounds quartz carbonate minerals clays halite NaCl graphite micas and alpha were also identified in vari- ous samples Twenty additional brake drum dust samp- les were collected by colleagues in four European countries and Australia The samples were obtained from areas representing variable circumstances such as driving conditions friction material composition type of automobile and climate The results of ray diffraction analyses are presented in Table 1.

FILE NAME Packings and Gaskets PAG DATE 1973 Apr 24 DOC PAG064 DOCUMENT DESCRIPTION Report - Dow Chemical - Atmospheric Concentration of Asbestos Fibers While Cutting Gaskets SECTION 9 DOW CHEMICAL / ATMOSPHERIC CONCENTRATION OF ASBESTOS FIBERS WHILE CUTTING GASKETS 4/24/73 ee oe U.S.A. -- File <fijeeye~ DOW CHEMICAL U.S.A. 50983 TEXAS DIVISION ENVIRONMENTAL HEALTH REPORT | ATMOSPHERIC CONCENTRATION OF ASBESTOS ; FIBERS WHILE CUTTING GASKETS FILE NO A24-173 DATE April 1973 -AUTHOR L.

FILE NAME Synkaloid SYN DATE 1978 DOC SYN027 DOCUMENT DESCRIPTION 1978 Journal article on lung cancer in drywall taping worker Citation Alf Fischbein Arthur M.