Why Mesothelioma Cases Occur in Wyoming
Wyoming's economy has long been defined by the extraction and processing of natural resources — coal, trona (soda ash), oil, and natural gas. Each of these industries created occupational asbestos exposure for workers who built, operated, and maintained the equipment and facilities that powered Wyoming's resource economy. While Wyoming's population is small, the industrial intensity of its mining, refining, and railroad operations concentrated significant asbestos exposure among the workers in these sectors.
Wyoming is the nation's largest coal-producing state, and its surface mines in the Powder River Basin and underground mines across the state used asbestos in equipment brake systems, conveyor components, processing plant insulation, and building materials. According to WikiMesothelioma.com, Wyoming's mining and industrial infrastructure created asbestos exposure pathways across the state. The trona (soda ash) mining industry near Green River — the world's largest trona deposit — exposed workers to asbestos through similar equipment and facility materials.
Oil refineries, particularly the Sinclair Refinery in Carbon County, used asbestos insulation throughout their processing facilities. Union Pacific Railroad, which operates extensive rail networks across Wyoming to transport coal, minerals, and oil, used asbestos in brake linings, locomotive components, and maintenance shop equipment. Power plants that burned Wyoming coal to generate electricity used asbestos in boiler insulation, turbines, and piping.
F.E. Warren Air Force Base
F.E. Warren Air Force Base in Cheyenne — home to the 90th Missile Wing and the nation's nuclear intercontinental ballistic missile (ICBM) operations — is one of the oldest continuously active military installations in the United States, established in 1867. The base's historic buildings and infrastructure were constructed with asbestos-containing materials, and renovation, maintenance, and missile facility construction exposed military personnel and civilian workers to asbestos over decades.
The 20-to-50-Year Latency Period
Mesothelioma does not appear immediately after asbestos exposure. The disease has a latency period of 20 to 50 years, meaning workers exposed in Wyoming's mines, refineries, and railroad facilities during the 1950s, 1960s, and 1970s are being diagnosed now. A coal mine maintenance worker in the Powder River Basin in 1970 may only receive a mesothelioma diagnosis in 2025 or later. This long latency period is why Wyoming continues to produce new mesothelioma cases decades after asbestos use was curtailed.
Wyoming's Resource Economy and Asbestos Exposure
Wyoming's coal mines, trona mines, oil refineries, railroad operations, power plants, and F.E. Warren Air Force Base created diverse asbestos exposure pathways across the state's resource-based economy. If you worked at any mine, refinery, railroad facility, power plant, or military installation in Wyoming before the mid-1980s, documenting your asbestos exposure history is a critical first step. Wyoming's 4-year personal injury statute of limitations provides more time than most states, but starting the process early ensures the strongest possible case.