Document 3MmoBgeaoOgnnm82Y0x13aMO

FILE NAME Corning OC DATE 1969 Apr 28 DOC OC322 DOCUMENT DESCRIPTION Memo RE Health Aspects of Fibrous Class Tom Dailey - Santa Clara HEALTH ASPECTS OF FIBROUS GLASS Jon L. Konsen M.D. April 28 1969 F. H. Edvards Par our conversation enclosed are five copies of the Realth Aspects of Fibrous Class To recap the highlights of our telephone conversation of April 25 1969 the following points are importanti 1 Asbestos causes the scaring disease of the lung known as asbestosis 2 A diagnosis of asbestosis can only be made on the basis of a good environmental exposure history appropriate ray changes appropriate pulmonary function changes and general physical examination } Such a medical evaluation should be carried out by a well qualified internist who is completely familiar with occupational and environmental medicine 3. Asphalt will not cause asbestosis 4. Fibrous glass is biologically inert i.e. even if it taken into the lungs it does not cause signifiemt changes Ninety percent of the fibrous glass produced is too large to be taken into the lungs 1.a. respirabla If you have further questions please let me know JUX Attach Jon L. Konsen M.D. 578