For decades, railroad employees were routinely exposed to toxic chemicals that directly affected the aerodigestive tract.
Diesel exhaust exposure created a constant stream of soot, particulates, and polycyclic aromatic hydrocarbons (PAHs) that entered the body through both inhalation and ingestion, irritating and damaging the esophagus over time.
Workers handling creosote-treated railroad ties and coal-tar products were also in direct contact with PAH-rich mixtures now known to contribute to esophageal squamous cell carcinoma.
In rail shops, machinists and sheet metal workers frequently used solvents such as trichloroethylene (TCE) and perchloroethylene (PCE), which studies have associated with elevated risks of esophageal cancer.
Welding fumes and asbestos-containing locomotive parts added further hazards to the daily work environment, exposing employees to multiple carcinogens at once.
Scientific studies have shown that significant exposure to these agents increases the risk of developing cancer of the esophagus and digestive tract, particularly in workers with many years of service.
Both acute, high-dose contact and chronic low-level exposure can create lasting damage, leading to a higher likelihood of cancer diagnoses later in life.
Regulatory agencies such as the Occupational Safety and Health Administration (OSHA) have recognized the dangers of diesel fumes, asbestos, and industrial solvents, yet many railroad companies continued unsafe practices long after the risks were documented.
The pattern of exposures in railroad jobs mirrors the risks observed in broader epidemiological studies, reinforcing the causal connection between railroad work and esophageal cancer.
Substances Linked to Esophageal Cancer in Railroad Work
Railroad workers encountered a range of carcinogens that scientific studies and regulatory agencies have associated with developing cancer of the esophagus and digestive tract.
These exposures occurred in locomotive cabs, rail yards, and repair shops, often without protective equipment or adequate ventilation.
Over time, repeated contact with these dangerous substances created conditions where railroad employees faced a far greater risk of esophageal cancer than the general population.
Dangerous substances and occupational exposures of concern include:
- Diesel engine exhaust (DEE): Contains benzene, nitro-PAHs, and soot particles that irritate and damage the esophageal lining; meta-analyses report elevated risks for gastrointestinal cancers, including esophageal cancer, in transport-exposed cohorts.
- Asbestos fibers: Present in insulation, brake pads, and other locomotive parts; recent meta-analyses show asbestos exposure as linked to an increased risk of esophageal cancer, particularly among heavily exposed groups.
- Creosote and coal-tar products: Used to treat railroad ties and bridge timbers; rich in polycyclic aromatic hydrocarbons (PAHs) that cause DNA damage in the mucosal lining of the esophagus.
- Chlorinated solvents (Trichloroethylene, Perchloroethylene): Commonly used in rail shops for degreasing and cleaning; linked to elevated esophageal cancer risks in occupational studies.
- Metalworking fluids (MWFs): Employed in machining and grinding operations; case–control studies show increased odds of esophageal cancer with prolonged exposure.
- Welding fumes: Classified as a Group 1 carcinogen; ongoing studies suggest risks extend beyond the lungs to the upper digestive tract, including the esophagus.
These workplace exposures reflect a pattern of cumulative harm in the railroad industry, where employees were regularly exposed to multiple carcinogens at once.
Whether through long-term inhalation of diesel fumes, ingestion of PAHs, or contact with solvents in poorly ventilated shops, the result was a significant exposure burden that left workers vulnerable.
The fact that railroad companies failed to warn workers about these hazards strengthens the legal and medical basis for pursuing claims.
By tying specific substances to modern cancer diagnoses, affected workers and families can show how railroad duties contributed to preventable esophageal cancers and support a FELA claim.
Scientific Studies Linking Occupational Exposures to Esophageal Cancer
Across occupational epidemiology, the clearest esophageal-cancer signals that map to rail settings involve chronic contact with diesel engine exhaust (DEE), asbestos, PAH-rich creosote/coal tar, selected chlorinated solvents (TCE/PCE) used in shops, and certain metalworking/welding environments.
A 2024 systematic review and meta-analysis of cohort studies in Occupational Medicine reported elevated gastrointestinal cancer risks, including esophageal cancer, among workers occupationally exposed to DEE, strengthening plausibility for transportation sectors such as rail where long-duration diesel exposure is common.
The NCI/NIOSH Diesel Exhaust in Miners Study (DEMS), a cornerstone exposure–response program on diesel, also notes a suggestive association with esophageal cancer, albeit with small numbers.
For asbestos, the newest 2025 systematic review and meta-analysis in Occupational & Environmental Medicine found increased risk of oesophageal cancer in asbestos-exposed workers, with stronger effects in the highest-exposed groups, a pattern directly relevant to legacy rail insulation, brake, and shop work.
PAHs have human biomarker evidence linking exposure to esophageal squamous cell carcinoma (ESCC): studies from high-incidence regions show PAH biomarkers and tissue adducts correlate with ESCC risk, aligning with rail tasks involving creosote-treated ties and sooty yards.
For shop solvents, the U.S. EPA IRIS assessment compiles epidemiology indicating associations of TCE with several cancers (with limited/suggestive evidence for esophageal sites) and suggestive esophageal findings for PCE in dry-cleaning cohorts, probative where rail shops historically used vapor-degreasing.
Metal-intensive tasks are also relevant: a nested case–control analysis in a large auto-manufacturing cohort found significantly increased odds of esophageal cancer with long-term metalworking-fluid exposure; and welding fumes are now IARC Group 1 carcinogens, supporting treatment of welding as an important co-exposure in sheet-metal/fabrication crafts.
Which Railroad Workers May Be at a Higher Risk of Esophageal Cancer?
Not all jobs in the railroad industry carried the same hazards, but many roles left workers regularly exposed to dangerous chemicals that can damage the aerodigestive tract.
Those who worked in enclosed cabs, repair shops, and along the tracks often faced long-term exposure to diesel exhaust, solvents, welding fumes, and asbestos: all substances linked to a higher risk of occupational illness such as esophageal cancer.
Employees responsible for transporting crude oil or servicing train cars often worked in environments filled with fuel vapors and diesel emissions, while shop crews handled degreasers and welding tasks in poorly ventilated areas.
Track maintenance workers also encountered creosote-treated ties, herbicides, and silica dust, creating daily contact with agents that are biologically linked to cancers of the esophagus and digestive tract.
Railroad jobs most at risk include:
- Engineers and conductors long shifts in locomotive cabs with constant diesel exhaust exposure
- Machinists and shop workers handled degreasers, solvents, and welding fumes in enclosed shops
- Sheet metal workers and boilermakers engaged in cutting, welding, and fabrication with metal fumes and asbestos
- Car repairmen maintained and painted train cars, often using products with benzene and other carcinogens
- Track maintenance crews worked around creosote-treated ties, herbicides, silica dust, and other soil contaminants
- Yard workers and switchmen stationed near idling locomotives, crude oil tankers, and heavy diesel fumes
These positions reflect how varied roles in the railroad industry often overlapped in terms of exposure, compounding risks for employees.
Whether in shops, cabs, or along the tracks, workers were placed in environments where multiple toxic substances combined to create lasting harm.
For many, the result was a preventable cancer diagnosis years later, directly tied to their employment and the unsafe conditions tolerated by railroad companies.
Can Family Members File a Wrongful Death Lawsuit for a Loved One Who Passed Away from Esophageal Cancer?
Yes, family members may pursue a wrongful death claim if their loved one’s esophageal cancer can be linked to harmful chemicals encountered during railroad work.
Courts recognize that prolonged contact with hazardous substances such as diesel exhaust fumes, asbestos, and solvents can contribute to cancers of the digestive tract.
These cases often fall within the broader category of railroad cancer claims, which hold companies accountable for unsafe working conditions.
Importantly, a worker’s employment status (whether active, retired, or long since separated from the railroad) does not prevent family members from bringing a claim.
A wrongful death lawsuit also considers the shortened life expectancy caused by the illness, as well as the financial and emotional loss to surviving spouses and children.
Compensation may cover medical costs, funeral expenses, lost household income, and loss of companionship.
By filing under the Federal Employers Liability Act (FELA), families can seek both justice and financial recovery for preventable cancers tied to decades of unsafe railroad practices.