Cross-Company Correspondence

Cross-company correspondence refers to letters, memos, telegrams, and other written communications exchanged between different asbestos manufacturers, mining companies, insurers, and trade associations throughout the 20th century. These documents, often uncovered during litigation discovery, show what industry executives knew about the health hazards of asbestos and when they knew it. They are some of the most powerful evidence in asbestos cases because they reveal coordinated conduct across the industry rather than the knowledge of a single company.

Origin

The term comes from standard business and legal usage describing inter-organizational written exchanges. In asbestos litigation, the phrase took on special meaning beginning in the late 1970s when discovery in cases like Borel v. Fibreboard (1973) and the South Carolina Sumner Simpson Papers litigation produced thousands of pages of letters between companies such as Johns-Manville, Raybestos-Manhattan, Owens-Corning, and their insurers dating back to the 1930s.

Significance in Asbestos Context

For a patient's case, cross-company correspondence is often the foundation of claims that manufacturers knew asbestos caused disease decades before they warned workers or the public. Letters like the 1935 exchange between Sumner Simpson of Raybestos-Manhattan and Vandiver Brown of Johns-Manville, discussing how to keep articles about asbestosis out of the trade press, are routinely cited to prove conscious concealment. This kind of evidence can support punitive damages and can defeat defenses that a company "didn't know" asbestos was dangerous during the years the patient was exposed. Because the same documents are used across many cases, your legal team will likely rely on an established document library rather than starting from scratch.

Example Sentence

At trial, the plaintiff's lawyer projected cross-company correspondence from 1936 showing that executives at two manufacturers had already discussed asbestos-related lung disease in workers, even though warning labels did not appear on their products until the 1960s.

Related Terms

Sumner Simpson Papers, State of the Art Defense, Punitive Damages, Asbestos Industry, Document Discovery, Failure to Warn

Notes

• If you worked with specific asbestos products, ask your attorney whether internal documents and correspondence exist for those manufacturers covering the years of your exposure.
• Preserve any letters, memos, safety bulletins, or training materials you received from former employers. Even routine paperwork can corroborate what companies were telling workers versus what they were telling each other.
• Ask whether the correspondence in your case supports a claim for punitive damages, which can substantially increase recovery beyond compensatory damages.
• Major document collections (Sumner Simpson Papers, Johns-Manville corporate records, Owens-Corning files) are housed in litigation document repositories your attorneys can access; you do not need to gather these yourself.