Dr. Hans Weill of Tulane to J-M on Grading Exposures at the Marrero Plant (1971)

A one-page letter of April 12, 1971, from Dr. Hans Weill of the pulmonary diseases section at Tulane University School of Medicine to Hugh Jackson, G. L. Swallow, Dr. T. H. Davison and C. L. Sheckler in J-M's New York office, Dr. George Wright in Cleveland, and three Marrero plant managers. Weill thanks them for a recent meeting on "grading of exposures" at the Marrero plant and says he and Miss Waggenspack had revised "the original charts" to match what the group decided. He asks them to review the revised estimates for any discrepancies.

What it shows

Weill was rating the dust exposure of each job at Marrero over the years, so that workers' health could be compared with how much asbestos they had breathed. J-M's managers and doctors took part in setting those grades. The meeting was the one H. M. Jackson arranged in February for March 26, 1971.

In Johns-Manville's chronology

Johns-Manville's own chronology of what the company knew describes this document as follows:

In a letter dated 4/12/71, Dr. Hans Weill thanks Jackson, Swallow, Davison and Sheckler for their helpful participation in a recent meeting regarding the grading of exposures at the Marrero plant. Dr. Weill states that Waggenspack and he have modified "the original charts" according to what was decided by the group at the meeting. Dr. Weill asks that the addressees review and comment on the charts. (The charts list various job positions at the Marrero plant, along with their corresponding exposure levels over the years expressed as "minimal, moderate," etc.)

Related documents

• H. M. Jackson on a Meeting with Dr. Hans Weill at the Marrero Plant (1971)