Document J3RarNM1obnX7xpjdV5m6XDLB

Johns-^anviUe Executive Bulletin No: Effective: Cancels: 422-2 O ctober 29, 1971 TO ALL J -M EMPLOYEES From time to time you may encounter questions - from customers, business associates or friends-- concerning the effects of asbestos on human, health. The enclosed facts card is designed to help you answer these questions. It has been reviewed and approved by Dr. George W. Wright, Head of Medical Research, St. Luke's Hospital, Cleveland, and Medical Consultant to Johns-Manville. You will notice that this facts card bears the name of the Asbestos Information Associr.tion/North America. As you probably know, the AIA/NA was formed last December, at J-M's initiative, to provide a strong single voice for the asbestos industry in its dealings with the press, government bodies and others on the subject of asbestos and health. This facts card is being made available to all JohnsManville employees. Additional copies are available from Matt Swetonic, Corporate Relations Department, New York GHQ. A. B. Marchant Vice President Employee Relations Asbestos and Healtfi Answers Recent public discussion of the health impli cations of asbestos dust has led to a number of erroneous and misleading impressions about hazards associated with the use of asbestos. These impressions are based on the unwarranted assump tion that data on occupational health risks associated with heavy, long term asbestos exposure can also be applied to the general public. The known medical facts, supported by nearly a half century of studiesand research, are that: 1 . Asbestos-related health risks are basically confined to the occupational and para-occupational setting. 2. Asbestos-related diseases may develop, generally, only after the inhala tion of substantial amounts of asbestos dust for a substantial period of time. 3. There is presently no evidence of hazard to the general public from ex posure to the minute amounts of asbestos that may be present in com munity air. Following are some questions commonly asked about asbestos and health. Jjf Answers are based on known scientific evidence and industry experience. Is asbestos a m ajor air pollutant? Dust counts taken in New York City and other urban areas show that asbestos levels in the community air are many times lower than levels considered to be safe for occupational exposure. In addition, recent evidence indicates that small quantities of asbestos fiber from natural sources may have existed in the ambient air for perhaps thousands or even millions of years. Man thus probably evolved into his present form in an atmo sphere containing some asbestos. QDo brake linings emit much as bestos Into the air? A A United States Public Health Service study shows that only a tiny fraction of the asbestos in brake linings is released to the air in its original form when brakes are applied. The rest is converted into fosterite--a non-fibrous inert material--by the heat of friction. QDoes the use of asbestos cause disease in the general public? A There is no evidence, scientific or otherwise, that anyone in the general public has ever con tracted any disease from exposure to the minute amounts of asbes tos released into community aii through the use, application, or wearing and weathering of fin ished asbestos products. Q Can a little bit of asbestos kill you? A Long-term medical studies of occupationally exposed workers show that low to moderate levels of exposure to asbestos do not lead to an increased rate of dis ease. In these studies, a higher than normal incidence of disease was found only among employees exposed to high concentrations ol dust for long periods ol time. If! QOnce asbestos enters the lung, does all of it remain there for ever? CRMC-SpecElec-000008 A No. The lung's normal cleans ing mechanism quickly removes the majority of inhaled particles, including respirable sized asbestos fibers. 0Should asbestos be banned until proven safe? A Asbestos concentrations in both the workplace and in commu nity air can be satisfactorily con trolled, and there is therefore no reason to ban the use of any as bestos-containing product. From a public health standpoint, such bans are completely unnecessary and would serve only as meaningless gestures. QTo what extent is asbestos an occupational health hazard? A Because of the long latent period of asbestos-related dis ease, some cases are still devel oping among long term employees whose exposure began at a time when little was known of the amount of asbestos a human being could tolerate, and when the dust control equipment in use was not as efficient or as sophisticated as it is today. With present medical knowledge and today's improved dust control measures, however, there is every reason to believe that these cases will decrease in the future and asbestos-related disease will cease to be a major occupational problem. OCan asbestos be used safely in the workplace? A Asbestos fiber can be handled and used on the job with com plete safety so long as certain basic precautionary measures are fol lowed. These include careful han dling of fiber bags to prevent tear ing and spilling, the use of dust control exhaust hoods at aii stages of in-plant handling where dust is unavoidably created, the wearing of respiratory protective equip ment where necessary, and good housekeeping with regard to dust clean-up and disposal procedures. 0 Shouldn't substitutes for asbes tos be used whenever possible? A More is known about the poten tial health hazards of asbestos and the proper means for their control than about materials that might be used to replace asbestos. It would be unwise to substitute unproven materials whose health effects are unknown (or asbestos, which has demonstrated its use fulness to society over the past century. For many essential, lifesaving-uses; asbestos is the only material that can do the job. QWhat is industry doing about the problem? A The asbestos industry, starting in the late 192Q's, sponsored iome of the first studies of as bestos-related disease ever under taken in the United States. These studies provided information that became the basis for dust control programs in the industry, which have been improved and expanded over the years. Tens of millions of dollars in sophisticated and effi cient equipment and techniques have been devoted to preventing the inhalation of asbestos dust by workers in the mining and milling of asbestos and in the manufacture of asbestos-containing products. Through the Institute of Occupa tional and Environmental Health in Montreal, the Industrial Health Foundation in Pittsburgh, and se lected hospitals and universities, the industry is sponsoring or co operating in major epidemiological and other research projects de signed to identify and eliminate as bestos-related health risks within the industry, and also for fabrica tors and applicators of finished asbestos-containing products. For Further Information Contact: ASBESTOS INFORMATION ASSOCIATION/NORTH AMERICA 22 East 40th Street, New York, New York 10016 (212)661-8206 Sponsored b y Atlas Asbestos Co . Cement Asbestos Products C o ., Certain-teed Prod ucts C a rp ., Flin tkots C o ., GAP C arp ., Johns-Monville Corp., National Gypsum Co., Panicon Corp. and fiaybestos-Manhatlan, Inc. CRMC-SpecElec-000009