Document NEQkzy4MGng2YmgqVOV9XExKp

FILE NAME: Kaiser Gypsum (KG) DATE: 1965 Mar 1 DOC#: KG096 DOCUMENT DESCRIPTION: Memo RE Health Hazards with AP Report - Asbestos Pointed to as Cause of Lung Cancer 02/12/01 16 :26 KMES * 14104492360 TO C o n t i TO k'V'f'Si3S2,, GY?SU.V C CiW ?A ?JY , i. R.!. C.S. J .D. J .S . N.D. D.K. J .F . P.D, Allgocd Caprye Cassidy Charbers Dicks Honan Itodaff Crlensr. ! N ~ S - 0 ; r 3C3 MSAIS0 3 &.MBUM v/.L. Traub J.H, V/alton R.1, Wibora S.R, Witt Oats FasM AT cc: ? ,J . Franklin G,3, Kirk J.C. R eilly V l % SUEJtCT NO. 067 P009/025 11529 ^Fboc-/ &a?ch l, 15&5 I*-R. F lic k e r KC 24.8 H ealth Hasarda The attached caterial has been received fxott the Gyps^ Association and is presented for your in i'orr.ation. In connection Y/ith protection against asbestos dust, it is advised to use a respirator with a filter especially designed for asbestos dust. ;sb EXHIBIT N C. MACDHA P L A IN T IF F 'S EXHIBIT 7 uo^ /!- /-fg _ ] PLTF 0502 05/19/00 20:03 TX/RX N O .0426 P.009 02x12x01 16:26 KMESft -> 14104402358 NO.06V P010X025 C O * Y ASBESTOS TS POINTED OyT AS_ c&nse jo s- IC T C c a n c e * by Alton Blakeslee AP Science Writer C 0 p y NEW YORX (AP) Medical specialists pointed a strong finger of suspicion coday a - asbestos as a cause noc only of lung cancer but also o k another extremely rase c m of fatal human cancer. This cancer, known as mesothelioma* involves the lining of eke abdominal and chest cavities Much of the specialises' evidence cones fron autopsy studies of sen working with asbestos as an insulation material. They said it also is possible that dust frem products contain ing asbestos might be exposing people generally eo some risk of cancers. How much risk there might be, they said, they could nos tell. Release Oust Asbestos is used not only for insulation but as a flooring material, in automobile brake shoes, and in many other applications. Ordinary wear and tear, they said, might release dust into Che atmosphere. The report was presented to the American Public Health Association b y D r s . Irving J. Selikoff and Jacob Churg of the Mount Sinai Hospital, New York, and E - Cuyler Hammond, Sc -D ., director of statistical research for the American Cancer Society. Dr. Haem -ad is known for his studies of cigarette smoking in relationship to lung cancer. Asbestos Is a mineral, magnesium silicate, and about 3 1/2 million tons of It are used worldwide each'year, they said. In 1935, worldwide usage amounted to about 500 tons, the researchers said. *iny, hard particles of asbestos can lodge in the lungs during mining, processing end application of asbestos-containing materials, or possibly from dust raised through normal wear, they said. "We had previously found that lung cancer and possibly gastro intestinal cancer were markedly increased in incidence among asbestos insulation worker*," they said. P L T F 053 05/19/00 20 '.03 TX/RX NO.0426 P.010 02/12/01 16:27 KMESA - 14104482368 NO.067 P011/025 - 2 Increase Noted Now they also find a markedly high increase acong such workers of -- asorheliorva, a cancer so rare it is not classed separately as a cause of death in she international classification os diseases As a prise exacple, they reported finding 10 deaths due to this . form of cancer in a study of 307 deaths among New York and New Jersey building traces union members engaged in using asbestos at least occasionally as an insulation material* By contrast, this fora of cancer was found to be the cause of death among only three out of sore than 30,000 autopsies in a study of the general population sponsored by the American Cancer Society. Other Studies Other studies showed a high incidence not only of lung cancer but mesotheliomas among persons who had asbestos particles in their lungs et the cite of their deaths, they said. "It would appear that mesothelioma must be added to che neoplastic (cancer) risks of asbestos inhalation and joins lung car.cerr (33 out of 307 deaths) and probably cancer of the stomach ar.d color. (34 of 307 deaths) as a significant complication of such industrial exposure in the United States," their report said. The cancers may not appear until 20 to 30 years after asbestos dusc is inhaled or swallowed, they said. Since che particles do not dissolve, they may remain in body tissue as a continuous source that might; incite ultimate cancer. Dr. tfacmond said one worry is whether a few or ever, a single past exposure might sfer che stage for cancer, tie said this is a sccer calling for me;a research. Taking precautions to avoid breathing in asbestos dust is a main protection for industrial workers, he and Dr* Selikoff said. PLTF0504 05/19/00 20:03 TX/RX NO.0426 P.011