Mesothelioma Lawyer Indiana: Asbestos Exposure at Merom Generating Station and Your Legal Rights

Your Mesothelioma Diagnosis May Be Connected to Decades of Work at an Indiana Power Plant

If you worked as an insulator, pipefitter, electrician, boilermaker, or mechanic at Merom Generating Station in Sullivan County, Indiana—or if a family member held one of these jobs and has since been diagnosed with mesothelioma, asbestosis, or lung cancer—you may be entitled to substantial compensation. Workers who spent years maintaining this coal-fired power plant may have been exposed to asbestos-containing materials that are only now causing serious illness, sometimes decades after their last shift. A skilled mesothelioma lawyer in Indiana can help you understand exactly where you stand.

Merom sits less than 100 miles from the Illinois state line. Many union members who reportedly worked there over the decades were organized through Missouri and Illinois locals based in St. Louis and the broader Mississippi River industrial corridor. If you are a Missouri or Illinois resident—or if your work history includes facilities in that corridor alongside time at Merom—the legal analysis in this article applies directly to your situation.

⚠️ URGENT: Indiana Filing Deadline Is Closer Than You Think

If you or a loved one has been diagnosed with mesothelioma, asbestosis, or asbestos-related lung cancer, the time to act is now.

Under current Indiana law, Ind. Code § 34-20-3-1, asbestos personal injury victims have **2 years from the date of diagnosis, as established under Ind. Code § 34-20-3-1 remains in effect. HB 1649 is a separate and active threat.

Contact an experienced asbestos attorney Indiana today. Every month of delay narrows your options.

Merom Generating Station: Facility Overview

Location and Operational History

Merom Generating Station sits along the Wabash River in Sullivan County, Indiana. The plant has operated for approximately four decades as a baseload facility serving southern Indiana through Hoosier Energy Rural Electric Cooperative, Inc. The facility reportedly generates approximately 1,000 megawatts of electricity across two units. Its industrial systems were built and operated during an era when asbestos-containing materials were standard throughout the power generation industry.

Unit 1: Reportedly came online in 1982
Unit 2: Reportedly came online in 1987
Original owner: Indiana Statewide Association of Rural Electric Cooperatives (REMC), operating through Hoosier Energy Rural Electric Cooperative, Inc.
Current operator: Hallador Power Company LLC, which acquired the facility in 2022

Merom is part of the broader industrial landscape of the upper Mississippi and Wabash River valleys. Many workers who allegedly performed construction and maintenance work at Merom during the 1980s and 1990s also reportedly worked at facilities throughout the Mississippi River industrial corridor—including Ameren’s Labadie Energy Center in Franklin County, Missouri; Ameren’s Portage des Sioux Energy Center in St. Charles County, Missouri; Granite City Steel in Madison County, Illinois; and Monsanto facilities in the St. Louis region. Workers with multi-facility exposure histories face particular challenges in documenting exposure, but those same overlapping work histories may support claims against multiple defendants and multiple asbestos trust funds. An experienced asbestos attorney in Indiana can identify every potential source of compensation in your history.

Why Asbestos-Containing Materials Were Widespread at Power Plants Like Merom

A 1,000-megawatt power station contains miles of interconnected industrial systems operating at extreme temperatures and pressures. Each of the following systems may have incorporated asbestos-containing materials at multiple points:

High-pressure steam generation boilers
Extensive high-temperature piping networks
Steam turbines and electrical generators
Feedwater heaters and condensing equipment
Air pollution control systems (precipitators and scrubbers)
Transformer and electrical distribution systems
Coal handling and ash disposal infrastructure
Cooling towers and water treatment systems
Administrative and control room buildings

Why Power Plants Ran on Asbestos: The Industrial Imperative and What Manufacturers Knew

Thermal and Fire Safety Requirements

Coal-fired power plants operate on the Rankine thermodynamic cycle, requiring precise thermal management at conditions that would destroy most ordinary materials:

Boiler temperatures: Exceeding 1,000°F
Steam system pressures: Measured in hundreds of pounds per square inch

Asbestos-containing materials were the industry standard for these applications because they offered exceptional heat resistance, natural fiber structure suited to pipe wrapping and block insulation, fire resistance meeting applicable building codes, and stability under sustained high-temperature exposure. No commercially available substitute matched those properties at comparable cost during the decades Merom was built and first operated.

What Manufacturers Knew—and When They Chose Concealment

Internal industry documents produced in asbestos litigation over the past several decades show that manufacturers including Johns-Manville Corporation, Owens-Illinois, Owens Corning Fiberglas, Armstrong World Industries, and Combustion Engineering knew about asbestos health dangers by mid-century. That information was not disclosed to workers or plant operators. The regulatory environment during Merom’s construction and early operation lagged badly behind the scientific record:

OSHA permissible exposure limits, established in 1970, were tightened repeatedly as evidence of harm accumulated
EPA strengthened regulations throughout the 1970s and 1980s
By the time meaningful protections were mandated, many Merom workers may have already logged years of exposure

This pattern of concealment is well-documented in litigation across Indiana and Illinois courts, including cases tried in Lake County Superior Court and Madison County, Illinois, where workers have recovered verdicts and settlements against many of the same manufacturers whose products were allegedly present at facilities like Merom. When you consult an asbestos cancer lawyer in St. Louis, they can connect your exposure history to those established patterns of manufacturer liability.

Asbestos-Containing Materials Allegedly Present at Merom Generating Station

Based on Merom’s construction era, facility type, and documented power plant industry practices, workers at this facility may have encountered the following categories of asbestos-containing materials.

High-Temperature Pipe and Boiler Insulation

The largest volume of asbestos-containing materials at coal-fired power plants was thermal insulation for steam and hot-water piping:

Magnesia block insulation (85% magnesia): Pre-formed sections on high-pressure steam lines, reportedly containing up to 15% chrysotile asbestos per industry standards documentation
Calcium silicate insulation: A successor product that may have contained asbestos fibers in pre-1980s manufacturing
Asbestos cloth lagging: Woven asbestos fabric allegedly applied as a weatherproofing and finishing layer over block insulation
Spray-applied asbestos: Reportedly applied to boiler exteriors and structural components at facilities of this vintage
Asbestos-containing putty and cements: Trowel-applied materials allegedly used to cover insulation joints and seal penetrations

Suspected manufacturers at facilities of this vintage include Johns-Manville Corporation, Owens-Illinois, Owens Corning Fiberglas, Armstrong World Industries and its Celotex division, Combustion Engineering, and Carey-Canada. Workers based in Indiana and Illinois will recognize many of these same product lines from their work at Labadie, Portage des Sioux, Granite City Steel, and Monsanto facilities. Which specific products were present at Merom would be established through discovery and facility documentation review during litigation.

Boiler Refractory and Castable Materials

The boiler—the core of the generating process—may have contained or been lined with asbestos-containing refractory products:

Refractory cements and castables: Reportedly mixed on-site and trowel-applied by boilermakers and insulators, allegedly containing chrysotile and sometimes amphibole asbestos
Refractory block insulation: Sectional insulation reportedly applied to boiler casings
Asbestos rope and braided packing: Allegedly used to seal boiler access ports, inspection manholes, and connection points
Insulating brick and tiles: Heat-resistant materials reportedly installed around boiler exteriors

Gaskets and Valve Packing

Gaskets and packings were used at virtually every pipe connection and valve throughout the steam system—which means they were among the most frequently disturbed asbestos-containing materials at the facility:

Compressed asbestos sheet gaskets: Die-cut materials reportedly used at pipe flanges throughout the system
Spiral-wound gaskets with asbestos filler: Allegedly used at high-pressure flange connections
Valve stem packing: Braided or woven asbestos material reportedly sealing valve stems against steam leakage
Pump packing: Braided asbestos material allegedly sealing rotating pump shafts
Manhole and access port gaskets: Asbestos-containing materials reportedly at inspection openings

Removing and replacing spent gaskets and packing—routine maintenance allegedly performed by pipefitters and mechanics throughout Merom’s operational history—may have been among the most fiber-releasing activities at the facility. Cutting old gaskets from flanges, scraping away deteriorated packing, and cleaning joint surfaces may have generated substantial airborne fiber concentrations with every maintenance cycle.

Suspected manufacturers include Garlock Sealing Technologies, John Crane Inc., Flexitallic, and A.W. Chesterton Company. Which specific products were present at Merom would be determined through discovery of purchasing and maintenance records during your asbestos lawsuit.

Turbine, Generator, and Electrical Equipment

Steam turbine insulation: Thermal insulation reportedly on turbine casings and associated equipment, particularly around high-pressure turbine stages
Generator insulation: Electrical and thermal insulation reportedly on generator stators and rotors
Arc chutes and flashguards: Asbestos-containing components allegedly in electrical switchgear
Electrical cloth and tape: Asbestos-containing electrical insulation materials reportedly used during construction and early operation
Switchgear panel linings: Interior insulation reportedly in electrical enclosures
Cable wrapping: Electrical cables manufactured through the 1970s may have incorporated asbestos-containing materials

Who Was at Risk: Trades and Job Titles at Merom

Industrial hygiene research consistently shows that the highest fiber exposures at coal-fired power plants occurred not necessarily among those who installed asbestos-containing materials, but among those who disturbed them during maintenance, repair, and overhaul cycles. At a facility like Merom, that means:

Insulators bore the heaviest direct burden—cutting, fitting, and removing pipe and boiler insulation throughout the facility. Every pipe run, every valve, every piece of equipment required insulation work at installation and periodic maintenance.

Pipefitters and steamfitters worked in sustained proximity to insulated piping systems. Breaking flanged connections, replacing valve packing, and cutting into insulated lines for repairs may have released fiber concentrations that industrial hygiene studies have documented as many times the permissible exposure limit.

Boilermakers worked inside and around boiler casings—spaces where refractory cements, insulating block, and asbestos rope packing allegedly accumulated over years of maintenance cycles.

Electricians who pulled and replaced wiring in older conduit