Why Mesothelioma Cases Occur in San Jose
San Jose's asbestos legacy is rooted in its transformation from an agricultural hub to the capital of Silicon Valley. Before the tech boom, San Jose was home to heavy industry and defense manufacturing. IBM's San Jose facility, one of the company's largest research and manufacturing campuses, used asbestos extensively in building insulation, cleanroom construction, and laboratory infrastructure from the 1950s through the 1980s.
Lockheed Martin (formerly Lockheed Missiles & Space) operated massive facilities in Sunnyvale and South San Jose where thousands of workers built missiles, satellites, and spacecraft components. Asbestos was standard in manufacturing hangars, testing facilities, pipe insulation, and thermal protection systems. FMC Corporation operated an armored vehicle manufacturing plant in San Jose where asbestos was used in brake linings, gaskets, insulation, and building materials.
The 20-to-50-Year Latency Period
Mesothelioma has a latency period of 20 to 50 years. A worker exposed to asbestos at San Jose facilities in the 1970s may only receive a mesothelioma diagnosis in 2025 or later. This is why San Jose continues to produce new mesothelioma cases decades after asbestos use was restricted.
Westinghouse Electric operated transformer and electrical equipment manufacturing facilities in the San Jose area where asbestos was used in electrical insulation, transformer components, and facility infrastructure. Workers who built, maintained, and repaired this equipment faced daily asbestos exposure throughout their careers.
San Jose's rapid postwar growth also meant massive construction projects that relied on asbestos-containing materials. Schools, hospitals, commercial buildings, and the San Jose Water Company infrastructure all incorporated asbestos products. The city's older buildings, many constructed between 1940 and 1980, continue to pose asbestos risks during renovation and demolition.
San Jose's Asbestos Legacy by the Numbers
IBM's San Jose campus employed over 8,000 workers at its peak. Lockheed's Bay Area operations employed over 25,000. FMC Corporation's San Jose plant produced thousands of armored vehicles. California allows only 2 years from diagnosis to file a mesothelioma claim — one of the shortest deadlines in the nation. Documenting your asbestos exposure history is a critical first step.

