Asbestos Exposure and Industrial Workers

Industrial workers face the risk of asbestos exposure during the manufacturing of asbestos products and through asbestos-containing protective clothing. While workers employed between the 1920s and 1980s experienced the highest occupational risks, modern industrial workers are not completely free from danger.

Asbestos remains present in older buildings, machinery, and construction materials. As a result, industrial workers in the United States continue to experience elevated risks of asbestos-related diseases, particularly in highly industrialized states such as Texas, California, Michigan, Ohio, and Illinois.

Even though asbestos use has declined, its legacy in aging infrastructure continues to threaten worker health across multiple industries.

Industrial Workers and Exposure to Asbestos

Industrial workers are frequently exposed to asbestos while operating, repairing, or maintaining machinery insulated with asbestos. Equipment used in heat and power systems was commonly lined with asbestos to prevent overheating.

When this machinery is disturbed during maintenance or daily operation, asbestos fibers can become airborne and remain suspended for long periods. Continuous inhalation of these fibers significantly increases the risk of developing fatal asbestos-related diseases.

The use of power tools such as grinders, drills, cutters, and scoring machines further worsens exposure by releasing additional asbestos dust into the air. Poor ventilation in many industrial facilities allowed these fibers to linger indoors, increasing long-term exposure.

Health Studies and Occupational Findings

A 2015 study published in the Occupational Environmental Medicine journal found that industrial workers had more than four times the risk of developing pleural mesothelioma compared to non-industrial workers.

Exposure was not limited to machinery alone. Protective equipment such as gloves, aprons, and clothing often contained asbestos-treated cotton used as a flame retardant, further increasing daily exposure risks.

In many factories, workers mixed raw asbestos with gypsum slurry to form molds. This practice, combined with inadequate ventilation, allowed asbestos particles to accumulate in enclosed workspaces.

High-Risk Industrial Jobs for Asbestos Exposure

Certain industrial job profiles carry significantly higher risks of asbestos exposure. These include smelters, molders, welders, millwrights, mechanics, trade laborers, forepersons, and other manual workers.

Studies have shown that machine operators were among the most likely to develop mesothelioma. In one study of 7,000 workers, more than 650 deaths were attributed to peritoneal mesothelioma, a rare and aggressive form of the disease.

Additional research found that workers in asbestos cement factories experienced higher rates of mesothelioma than the general population. Another study of millwrights and machine erectors in New York revealed that nearly half showed abnormalities in the pleura, indicating asbestos-related damage.

Asbestos-Containing Materials in U.S. Industries

According to the 4th National Forum for Asbestos Litigation, companies operating within traditional industrial systems before the 1970s likely permitted asbestos-containing products in their facilities.

Common Sources of Asbestos Exposure

Construction materials and machinery parts such as gas valves, autoclaves, and engine heaters often contained asbestos to regulate temperature and prevent overheating. Building materials like ceiling tiles, floor tiles, cement, and insulation also commonly included asbestos.

Protective gear such as gloves, aprons, fireproof jackets, and pants were frequently made with asbestos to protect workers from burns caused by molten metal and embers.

Many products manufactured with asbestos included asbestos paper, textiles, braided packing, rope lagging, and raw asbestos used in metal casts and molds. Activities such as soldering, hammering, melting, and sandblasting further increased exposure risks.

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Key Industrial Areas Responsible for Asbestos Exposure

Certain regions in the United States have been heavily impacted by asbestos exposure due to their industrial history and continued use of aging infrastructure.

The Rust Belt

The Rust Belt, including states such as Ohio, Michigan, Pennsylvania, and Illinois, was once the industrial heartland of the nation. Steel mills, automobile factories, and heavy machinery plants extensively used asbestos, exposing workers on foundry floors and assembly lines.

Cancer Alley

Cancer Alley, located along the Mississippi River between Baton Rouge and New Orleans, Louisiana, is home to numerous petrochemical plants and refineries. These facilities historically relied on asbestos in piping, insulation, and industrial equipment.

Appalachian Coal Mines and Manufacturing Hubs

In states such as West Virginia and Kentucky, asbestos was widely used in coal mining equipment, processing plants, power plants, and steel mills. Workers in these regions experienced elevated rates of asbestos-related illnesses.

Current Asbestos Exposure Risks for Industrial Workers

Although asbestos use is largely banned today and workplace safety regulations are stricter, the risk of exposure has not been completely eliminated. Asbestos remains present in older buildings and outdated machinery still in operation.

Additionally, asbestos is still legally used in certain industries. For example, many chlorine-producing facilities continue to rely on asbestos diaphragms, exposing workers to ongoing health risks.