W. G. Hazard to Arthur J. Vorwald on the Composition of Kaylo (1948)

A two-page letter of September 21, 1948, from W. G. Hazard of the Industrial Relations Division, Owens-Illinois Glass Company, to Dr. Arthur J. Vorwald of the Saranac Laboratory, answering questions about Kaylo raised while Dr. C. F. Shook was at Saranac, where animal experiments on Kaylo dust were under way. Hazard wrote that the more recent dust may have held "a greater ratio of amosite to chrysotile," and that Kaylo was 80 to 85 percent hydrated calcium silicate and "15 to 20 percent of asbestos of the amosite and chrysotile varieties."

What it shows

The letter shows Owens-Illinois describing to Saranac the asbestos content of the dust being tested, two months before Vorwald reported that the animals had developed asbestosis (his letter of November 16, 1948).

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 (Industrial Relations Division, Owens-Illinois Glass Co.) letter to Dr. A.J. Vorwald, 9/21/48, listing some of the questions which Dr. C.P. Shook asked while at Saranac recently with regard to the animal experiments on Kaylo dust.

Related documents

• Arthur J. Vorwald to U. E. Bowes on Kaylo Producing Asbestosis in Animals (1948)
• Saranac Laboratory, Interim Report on the Biological Activity of Kaylo Dust (1948)

About this copy

This is document 184 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-001208 to CRMC-Motley1000-Subj-001209.