R. J. Sexton to Plant Manager Transmitting Peele's Industrial Hygiene Survey of 'Thermobestos' and 'Kaylo' Insulation Block Dust, Plant 511/512 (1962)

Cover letter from the Plant 512 Medical Director enclosing an Industrial Hygiene Department survey (Report 62-...-G-1) of dust in the Construction Insulation Shop, Building 511-2018, where Johns-Manville 'Thermobestos' and Owens Corning 'Kaylo' insulation blocks were sawed. The letter says the report found 'Thermobestos' dust a definite health hazard with silicosis as the ultimate outcome, that use of the blocks would be discontinued, and that chest X-rays would be ordered for ten insulators and one supervisor. The enclosed report gives sampling data, a 20 mppcf threshold limit value, and conclusions.

What the document holds

• Page 1: Letter, R. J. Sexton, M.D., Plant Medical Director, transmitting the dust survey and describing follow-up X-rays
• Pages 2-3: Industrial Hygiene Survey, Construction Insulation Shop, Building 511-2018: summary, introduction and background
• Pages 4-6: Report text on sampling procedure and analysis (OCR largely unreadable)
• Page 7: Conclusions and recommendations, signed by the industrial hygienist (Peele)
• Page 8: Figure: layout of the shop, band saws and exhaust hoods (sideways, OCR failed)
• Page 9: Table 1: atmospheric dust concentration data by sampling location (midget impinger)
• Page 10: Table 2: summary of 40-hour weekly weighted exposures for five workers
• Page 11: Table 3: 'Thermobestos' particle size distribution (OCR largely unreadable)

People and organizations

From R. J. Sexton, M.D. (Plant Medical Director); Mr. Peele (Industrial Hygienist (author of the enclosed survey report)) to Plant Manager, Plant 512 (name only partly legible; copy list also mostly illegible) (Plant Manager).

• R. J. Sexton (author)
• Medical Department (its organization)
• Construction Department (named)
• Industrial Hygiene Department (named)
• Johns-Manville (named)
• Owens-Corning Fiberglas (named)
• Union Carbide Corporation (named)

Related pages

Pages on our site about what this document covers: Asbestos Exposure in Insulators and Insulation Workers · Industrial Hygiene · Johns-Manville · Kaylo | Mesothelioma Claims · Owens-Corning Fiberglas · Threshold Limit Value (TLV).

About this copy

This is document UC-6 of the Union Carbide documents, documents produced and used as evidence in asbestos lawsuits against Union Carbide, 11 pages. Production numbers A0407 to A04080.