S. R. Zimmerman to R. L. Moore Sending the Public Health Service's Manheim Dust Results (1965)

A one-page memo of November 3, 1965, from S. R. Zimmerman, Jr., to R. L. Moore of Raybestos-Manhattan's United States Asbestos Division, sending on a letter and results from the Department of Health, Education, and Welfare, and asking that J. Wronski review them "carefully for whatever useful information we can get out of them." The enclosed letter of November 1, 1965, from Jeremiah R. Lynch, senior sanitary engineer of the U.S. Public Health Service in Cincinnati, reports the analysis of the air samples taken at the Manheim plant in August 1964. Lynch wrote that all dust levels measured by impinger were under the 5 million particles per cubic foot Threshold Limit Value (TLV), and that the membrane filter method was "experimental" with no standards yet set for it.

What it shows

This is the dust-sampling phase of the Public Health Service study that Raybestos-Manhattan had agreed to in 1963 (Zimmerman's letter of July 22, 1963). According to Johns-Manville's index, the attached report, "Asbestos Study: Procedures and Findings," compared five unnamed plants, of which Manheim was plant number 4. The company's own engineer later questioned where the samples were taken (R. L. Moore's memo of November 12).

In Johns-Manville's index

Johns-Manville's attorneys indexed the Sumner Simpson Papers. Their index describes these documents as follows:

05831. Transmittal memo for letter and report from the Department of Health, Education & Welfare dated 11/1/65.

05832-05845. Transmittal letter for analysis of the air samples collected in the Manheim plant during the 1964 survey. All dust concentrations were below the current TLV of 5mppcf. Attached is the "Asbestos Study-Procedures and Findings." Five unidentified plants were studied and compared. It is known that Manheim was plant number 4.

Related documents

• S. R. Zimmerman to Dr. Lewis J. Cralley Limiting Raybestos-Manhattan's Part in the Public Health Service Asbestos Study (1963)
• S. R. Zimmerman to Jeremiah R. Lynch Acknowledging the Manheim Air Sampling Results (1965)
• R. L. Moore to S. R. Zimmerman Sending J. Wronski's Comments on the Public Health Service Dust Report (1965)

About this copy

These are documents 05831, 05832-05845 of the Sumner Simpson Papers, as numbered in the collection's index.