Arthur J. Vorwald to W. G. Hazard Sending the Final Kaylo Report (1952)

A one-page letter of February 7, 1952, from Dr. Arthur J. Vorwald, director of the Saranac Laboratory, to W. G. Hazard of Owens-Illinois, sending the final report on "The Capacity of Inhaled Kaylo Dust to Injure the Lung." The animal studies showed that Kaylo dust "is capable of producing a peribronchiolar fibrosis typical of asbestosis," and Vorwald wrote that "every precaution should be taken to protect workers against inhaling the dust." In any publication, he promised, "reference will be made only to hydrous calcium silicate and not to 'Kaylo;' thus the interest of your Company will be safeguarded."

What it shows

Vorwald told Owens-Illinois plainly that its product could cause asbestosis, and also offered to keep the product's name out of print and to send the manuscript "for review before being released to the publisher." Ten months later, an Owens-Illinois pamphlet draft said the same research proved that normal handling of Kaylo was safe (Motley document 186). The report itself is Motley document 233.

In Johns-Manville's index

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

Dr. A.J. Vorwald's letter to W.G. Hazard, 2/7/52, enclosing the final report of the Saranac Lake studies concerning the capacity of Kaylo dust to injure the lung. The results of the studies with animals show that Kaylo dust is capable of producing a peribronchiolar fibrosis typical of asbestosis. The results of the study indicate that every precaution should be taken to protect workers against inhaling the dust. Dr. Vorwald indicates that the final manuscript will be forwarded to Hazard for review before being released to the publisher.

Related documents

• Saranac Laboratory, Final Report on the Capacity of Inhaled Kaylo Dust to Injure the Lung (1952)
• Curtis W. Howard to George R. White Proposing the "Handling Kaylo Products" Pamphlet (1952)

About this copy

This is document 185 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-001210 to CRMC-Motley1000-Subj-001210.