Leroy U. Gardner

Dr. Leroy U. Gardner was an American industrial pathologist who directed the Saranac Laboratory from 1927 to 1946. He conducted some of the earliest experimental studies on asbestos disease in animals and reported findings, including suspected cancer in mice exposed to asbestos, to the asbestos industry executives who funded his work. His correspondence and unpublished data later became central evidence that the industry knew of asbestos hazards decades before warning workers or the public.

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Origin

Leroy Upson Gardner (1888–1946) trained as a physician and pathologist and led the Saranac Laboratory, an institution originally focused on tuberculosis that became a leading center for occupational lung disease research in the 1930s and 1940s. His asbestos research was commissioned and financially supported by Johns-Manville, Raybestos-Manhattan, and other major asbestos companies beginning in the late 1920s.

Significance in Asbestos Context

Gardner's work is a cornerstone of the "state-of-the-art" evidence used in asbestos litigation to show that manufacturers knew, or should have known, about the dangers of asbestos long before they acted. In a 1943 letter to industry executives, Gardner reported that 81.8% of long-surviving mice exposed to asbestos developed lung tumors, a striking early signal of carcinogenicity. Industry sponsors pressured him to downplay or omit the cancer findings from publication, and after his death in 1946 the published version of his work was edited to remove or soften these conclusions. For patients and families, the Gardner correspondence is frequently cited in punitive damages claims and in arguments that defendants engaged in fraudulent concealment, because it documents direct corporate knowledge of asbestos-caused cancer years or decades before warnings appeared on products.

Related Terms

Saranac Laboratory, State of the Art, Sumner Simpson Papers, Johns-Manville, Fraudulent Concealment, Punitive Damages, Failure to Warn, Notice

Notes

• If your exposure occurred after the late 1930s, ask your legal team whether Gardner's correspondence and the related Saranac Laboratory records are part of the state-of-the-art evidence in your case.
• Preserve any employment records showing when and where you (or your loved one) worked with asbestos products. The date of first exposure determines which historical knowledge documents are most relevant.
• The Gardner materials are often paired with the Sumner Simpson Papers and the 1949 Saranac Symposium proceedings; ask whether all three bodies of evidence apply to the defendants named in your case.
• For mesothelioma and lung cancer claims in particular, Gardner's animal cancer findings are commonly used to support punitive damages. Make sure your attorney is pursuing this category of damages if your jurisdiction allows it.

Titles in the documents

How documents describe Leroy U. Gardner, each as the documents state it, with how many say so and the years they span. We record what the documents say and don't choose between them.

• Director at Saranac Laboratory for the Study of Tuberculosis, 1932, in 2 documents unreviewed
• Director of Saranac Laboratory, 1927-46, from Johns-Manville's witness index unreviewed

In our library

68 documents in our library name Leroy U. Gardner, by collection.

In the Union Carbide documents

Leroy U. Gardner is named in 2 Union Carbide documents dated 1932 (2 as author), from asbestos lawsuits over Union Carbide's Calidria asbestos. All are published in our collection.

• National Safety Council, 1932 Transactions of the Twenty-First Annual Safety Congress, Industrial Health Section Excerpts on Mineral Dusts, Asbestos and Silicosis (1932) Union Carbide H
• National Safety Council, 1932 Transactions of the Twenty-First Annual Safety Congress, Excerpts with Papers on Mineral Dusts, Asbestos and Silicosis (1932) UC-5086

Names in the documents

The spellings documents use for Leroy U. Gardner, OCR misreadings included, so a search for any of them finds this page: Leroy Gardner · Dr. Leroy Gardner.

Where this comes from

This page brings together every document in our library that names Leroy U. Gardner, across collections. Titles and affiliations are taken from the documents themselves.