St. Louis railroad workers face prolonged exposure to toxic chemicals during routine job functions in railyards, maintenance shops, and locomotive cabs.
Workplace exposures often involve diesel fumes, asbestos pipe insulation, and crystalline silica dust—all of which present an elevated risk of serious health conditions, including respiratory disease and cancer.
For example, ultrafine particles from diesel exhaust can accumulate in poorly ventilated spaces and remain in the lungs long after exposure.
The Occupational Safety and Health Administration (OSHA) has issued warnings about the dangers of these substances, yet many workers continue to encounter them daily without adequate protection.
Silica sand and silica dust are especially common during track maintenance or when ballast is disturbed, leading to inhalation risks over both a short period or long period depending on job duties.
Asbestos, once used in electrical panels, brakes, and pipe insulation, still lingers in older railcars and shop infrastructure, posing danger when disturbed.
Even moderate exposure over time can contribute to chronic illness or accelerate latent diseases.
Despite known hazards, many St. Louis rail workers continue to labor in environments where toxic exposure is routine and protections remain inconsistent.
Types of Chemical Exposure Commonly Experienced by St Louis Railroad Workers
Railroad work exposes employees to a wide range of toxic substances through direct skin contact, inhalation, and long-term environmental presence in rail yards, engine rooms, and repair shops.
These exposures can be acute or chronic, with health consequences that often appear years later.
From loading crude oil tankers to welding in confined spaces, the nature of the railroad industry places workers in constant proximity to hazardous materials.
Below is a detailed list of chemical hazards commonly encountered in railroad work:
- Diesel Fuel & Diesel Exhaust Fumes: Emitted during locomotive operation and refueling. Contains benzene, nitrogen oxides, carbon monoxide, and ultrafine particulates. Often accumulates in engine rooms, cabs, and enclosed maintenance shops.
- Crude Oil: Transported in tankers. Spills, leaks, and loading operations expose workers to volatile organic compounds (VOCs) and polycyclic aromatic hydrocarbons (PAHs).
- Benzene-Containing Solvents: Found in degreasers, brake cleaners, and engine additives. Benzene is absorbed through skin and lungs and is strongly linked to leukemia and other blood cancers.
- Asbestos Fibers: Present in pipe insulation, brake pads, gaskets, and older locomotive components. Asbestos exposure occurs during repairs, maintenance, and demolition work.
- Silica Dust: Generated during track repair, ballast handling, concrete cutting, and sanding operations. Inhalation over time causes silicosis and raises lung cancer risk.
- Welding Fumes: Produced during track fabrication, rolling stock repairs, and structural maintenance. Contains manganese, chromium, and lead oxide fumes, especially dangerous in poorly ventilated spaces.
- Creosote: Used to treat railroad ties and timber bridges. Exposure occurs through skin contact and inhalation when cutting or working near aging wooden ties.
- Degreasing Solvents: Includes trichloroethylene (TCE) and perchloroethylene (PERC), which are used for cleaning engine parts and electrical components. Both are classified as carcinogenic.
- Lead-Based Paints & Dust: Found on aging infrastructure and rolling stock. Sanding or chipping old surfaces releases lead particles into the air.
- Lubricants and Hydraulic Fluids: Exposure during coupling, brake work, or equipment maintenance. These often contain mineral oils and chemical additives with endocrine-disrupting properties.
- Pesticides and Herbicides: Sprayed along tracks for vegetation control. Workers may be exposed through drift, surface contact, or during application.
- Battery Acids: Used in signal systems, emergency equipment, and backup power. Can cause burns and respiratory irritation upon contact or inhalation.
- Freight Residue Chemicals: Railcars transporting industrial chemicals can leave behind toxic residue, including chlorine, sulfur dioxide, and ammonium nitrate.
- Industrial Cleaning Agents: Used in rail yard sanitation or chemical cleaning of tankers. Can include caustic agents, ammonia, and aldehydes.
- Paints and Coatings: Contains VOCs like toluene and xylene, often used during refurbishment projects in enclosed or semi-enclosed shop environments.
Each of these substances carries its own set of health risks depending on exposure duration, concentration, and route (inhalation, dermal, ingestion).
Types of Cancer and Serious Health Issues Suffered by Railroad Workers
Railroad workers face heightened cancer risk due to years of occupational exposures to diesel fumes, asbestos, silica dust, and other chemicals.
According to findings from the National Institute for Occupational Safety and Health (NIOSH), many of these exposures are recognized risk factors for developing serious illnesses.
Prolonged or repeated contact with toxic substances in rail yards, engine houses, or during maintenance work can significantly increase the chance of illness.
Below is a detailed overview of serious health conditions commonly linked to toxic exposures in the railroad industry:
- Lung Cancer: Prolonged inhalation of diesel exhaust, asbestos fibers, and silica dust significantly increases the risk of lung cancer among railroad workers. Diesel exhaust contains carcinogenic compounds like benzene and formaldehyde, while asbestos and silica dust can cause chronic inflammation and scarring in lung tissue, leading to malignancy.
- Kidney Cancer: Exposure to industrial solvents such as trichloroethylene (TCE) and tetrachloroethylene (PERC), commonly used in degreasing and cleaning operations, has been associated with an increased risk of kidney cancer. These chemicals can be absorbed through the skin or inhaled, accumulating in the kidneys over time.
- Liver Cancer: Chronic exposure to solvents like TCE and PERC not only affects the kidneys but also poses a risk to liver health. These substances can cause liver toxicity and have been linked to liver cancer in workers with prolonged exposure.
- Stomach Cancer and Colorectal Cancer: Ingestion or inhalation of carcinogens such as benzene, found in diesel fuel and exhaust, and creosote, used in treating railroad ties, has been linked to gastrointestinal cancers, including stomach and colorectal cancers.
- Mesothelioma: This aggressive cancer affects the lining of the lungs and is primarily caused by asbestos exposure. Railroad workers involved in maintenance and repair of older equipment may inhale asbestos fibers released from insulation and brake components.
- Multiple Myeloma: A type of blood cancer that affects plasma cells, multiple myeloma has been linked to chronic exposure to benzene and other toxic solvents used in the railroad industry. Workers exposed over time—especially in enclosed shops or during degreasing and maintenance operations—may face an elevated risk of developing this condition.
- Toxic Encephalopathy: Long-term exposure to organic solvents used in cleaning and maintenance can lead to toxic encephalopathy, a condition characterized by cognitive deficits, memory loss, and mood disturbances. Symptoms often develop gradually and may be misattributed to aging.
- Leukemia and Other Blood Disorders: Benzene exposure, prevalent in diesel exhaust and certain solvents, is a well-known risk factor for blood cancers such as leukemia. Railroad workers exposed to benzene over extended periods are at increased risk of developing these conditions.
- Chronic Obstructive Pulmonary Disease (COPD): Inhalation of a train’s diesel fumes, silica dust, and other airborne irritants can lead to chronic obstructive pulmonary disorder, a group of lung diseases that cause breathing difficulties. Railroad workers in environments with poor air quality are particularly susceptible.