Marion Power Plant

About Marion Power Plant Williamson County Illinois

The Facility and Its Workforce

Southern Illinois Power Cooperative has served rural electric cooperatives throughout southern Illinois since the post-World War II era. The Marion facility, fueled by bituminous coal from Williamson County and the Illinois Basin, was central to SIPC’s generation portfolio for decades.

The workforce came largely from the same regional trades that built southern Illinois and the broader Mississippi River industrial corridor — boilermakers, pipefitters, insulators, electricians, millwrights, and laborers who moved fluidly between job sites on both sides of the river. One outage at Marion, the next at Labadie Energy Center or Portage des Sioux Power Plant in Missouri, and back again.

Asbestos exposure Missouri workers experienced did not stop at the state line — and neither does your right to seek compensation. Whether you worked primarily in Illinois or crossed the river regularly for Missouri plant assignments, a qualified asbestos attorney can evaluate your full exposure history.

Why Coal-Fired Plants Were Saturated with Asbestos

Coal-fired power generation requires extreme heat, high-pressure steam, and miles of insulated pipe. From the 1930s through the late 1970s, asbestos was the material of choice for every thermal application in facilities like Marion.

Workers at Ameren UE plants across the Mississippi River — including Labadie Energy Center in Franklin County, Missouri, Portage des Sioux Power Plant in St. Charles County, and Rush Island Energy Center in Jefferson County — encountered the same products under the same conditions. Their litigation history directly informs what we know about Marion. Workers at Granite City Steel in Madison County, Illinois, and at the Monsanto chemical complex in the St. Louis area faced identical exposures from the same manufacturers and the same product lines.

The entire Mississippi River industrial corridor — from the St. Louis metro through Madison and St. Clair Counties in Illinois and across to Missouri’s river counties — was built with asbestos. Marion was one piece of that picture. If you worked anywhere in that corridor, your legal rights deserve immediate attention from a toxic tort attorney who knows this geography and its documented defendants.

At Marion specifically, asbestos-containing materials were present in:

• Boilers operating above 1,000°F, insulated with calcium silicate pipe insulation block insulation manufactured by and later
• High-pressure steam turbines and their casings, lagged with Thermobestos pipe covering manufactured by
• Miles of insulated pipe wrapped in pipe insulation and high-temperature pipe insulation pipe insulation manufactured by
• Valve packing, gaskets, and flanges, including Cranite sheet gaskets manufactured by
• Electrical equipment requiring fire-resistant insulation, including asbestos-containing switchgear components
• Structural fireproofing applied as spray-applied fireproofing spray-applied fireproofing manufactured by, covering structural steel throughout the facility
• Floor tile and ceiling products, including Gold Bond asbestos-containing board manufactured by , and aggressively marketed these products to utilities and industrial contractors throughout the Midwest. No warnings were given. No substitutes were offered. The health consequences were buried in industry documents for decades while workers at Marion continued to be poisoned.

Those companies — and dozens like them — owe compensation through asbestos lawsuit verdicts, trust fund distributions, and negotiated settlements. That compensation is only available if you act before your deadline expires.

Asbestos exposure Missouri workers and Illinois tradespeople experienced at Marion followed a pattern common to every coal-fired facility built and operated during this era — the same pattern documented in litigation arising from Labadie, Portage des Sioux, Granite City Steel, and the Monsanto facilities along both banks of the Mississippi.

Construction Phase (typically 1950s–1960s): Workers who built Marion installed asbestos in virtually every thermal application. They applied calcium silicate pipe insulation block insulation to boiler surfaces by hand. They wrapped steam pipe in high-temperature pipe insulation and Thermobestos pipe covering. They troweled spray-applied fireproofing fireproofing onto structural steel. They installed ceiling tile asbestos-containing board throughout auxiliary buildings. They cut asbestos block, laid asbestos rope, and mixed asbestos cement in enclosed spaces with no ventilation and no protection.

Operational Maintenance (1950s–late 1970s): Every routine maintenance task that involved opening a pipe, breaking a flanged connection, or repairing a valve disturbed previously installed high-temperature pipe insulation, Thermobestos, or calcium silicate pipe insulation. Pipefitters who cut through asbestos-wrapped pipe were directly in the dust cloud. Electricians drilling through walls adjacent to insulated pipe runs breathed fibers they couldn’t see.

Many of these workers carried those fibers home on their clothing to families in Williamson County, Marion, and across the river in Missouri. Those family members may have their own legal claims — claims subject to the same strict Missouri asbestos filing deadlines.

Outages and Turnarounds (1960s–1980s and beyond): Major scheduled outages brought dozens or hundreds of outside contractors into the plant simultaneously — many dispatched from union halls in St. Louis and East St. Louis as well as southern Illinois halls. Boilermakers worked inside boiler drums surrounded by asbestos-containing refractory castables. Insulators stripped and replaced miles of high-temperature pipe insulation and Thermobestos pipe covering. Gasket mechanics broke Cranite sheet gaskets from flanged connections throughout the steam system. These concentrated work periods generated some of the heaviest documented asbestos exposures in the history of the Mississippi River industrial corridor.

If you were dispatched to Marion for outage work even once, that single assignment may be sufficient grounds for an asbestos lawsuit.

Post-Regulation Continuation (1970s–1990s): Even after OSHA began regulating asbestos in 1972, the high-temperature pipe insulation, Thermobestos, calcium silicate pipe insulation, and spray-applied fireproofing already installed at Marion stayed in place. Workers who disturbed that legacy material — even decades after its original installation — continued to receive dangerous exposures. Regulatory compliance was inconsistent. Protective measures that existed on paper were routinely not implemented in the field.

If your exposure continued into the 1980s or 1990s and you have received a recent diagnosis, the Illinois’s 2-year PI window (735 ILCS 5/13-202) of limitations is running right now. There is no safe reason to wait.

Call a Illinois mesothelioma attorney today.