W. G. Hazard to Ira I. Brought Sending the Saranac Kaylo Article (1956)

A one-page Owens-Illinois letter of June 12, 1956, from W. G. Hazard of the Industrial Relations Division to Ira I. Brought, sending the reprint he had asked for that morning: "Effect of Inhaled Commercial Hydrous Calcium Silicate Dust on Animal Tissues" (A.M.A. Archives of Industrial Health, 1955). Hazard wrote that the Saranac Laboratory experiments "showed conclusively there was no silicosis hazard" from Kaylo dust, while animals exposed long to high concentrations "could develop a mild asbestosis reaction." He added that annual examinations at the Berlin and Sayreville, New Jersey, plants had found no lung changes due to the work.

What it shows

Hazard's summary put the silicosis finding first and called the asbestosis finding mild, noting that asbestos workers and applicators were exposed to more asbestos dust in their normal work than from handling Kaylo. His memo of the same day about Brought's call is Motley document 188; the article is Motley document 103.

In Johns-Manville's index

Johns-Manville's legal department indexed the Motley 1,000 in 1984. Its index describes this document as follows:

W.G. Hazard letter to Ira I. Brought, 6/12/55, attaching an article entitled "Effect of Inhaled Commercial Hydrous Calcium Silicate Dust on Animal Tissues." The Saranac experiments show conclusively that there is no silicosis hazard to Kaylo dust. Saranac found that animals exposed for a prolonged period of time to high concentrations of Kaylo dust, develop a mild asbestosis reaction. Hazard states that in addition to the animal experiments, a comprehensive preventative medical program has been in effect at Berlin, New Jersey, the present Kaylo plant, and formerly at Sayreville, New Jersey. Ever since these plants were first set in operation no lung changes of any kind that could be attributed to an occupational exposure have been detected.

Related documents

• W. G. Hazard to W. J. Stewart on Ira Brought's Request for a Kaylo Health Brochure (1956)
• W. G. Hazard of Owens-Illinois to Ira I. Brought on Kaylo and the Saranac Experiments (1956)

About this copy

This is document 187 of the Motley 1,000, from the set the Manville Personal Injury Settlement Trust's records facility certified as true copies, pages CRMC-Motley1000-Subj-001216 to CRMC-Motley1000-Subj-001216.