About Darby Power Station

Darby Power Station — also called Darby Generating Station — is a fossil fuel–fired electric generating facility near Mt. Sterling, Ohio, in Madison County. The plant reportedly operated under American Electric Power (AEP) and predecessor entities, including Columbus Southern Power Company and Ohio Power Company.

Like virtually every large coal-fired or oil-fired power station built during the mid-twentieth century, Darby Power Station was reportedly designed, built, and maintained using extensive quantities of asbestos-containing materials (ACMs). Manufacturers supplying these materials allegedly included, gaskets and packing, ceiling tile. These materials were then-standard thermal insulation and fire-resistance products — their use was universal across the American utility power industry from the 1940s through the late 1970s.

Workers and tradespeople may have been exposed to asbestos-containing materials during construction, routine maintenance, repair operations, and deliberate asbestos abatement projects spanning from the facility’s initial construction through modern remediation efforts.

Coal-fired and oil-fired power stations run at extreme temperatures. Steam is generated at pressures exceeding 1,000 pounds per square inch (PSI) and temperatures above 1,000 degrees Fahrenheit. Engineers needed insulation materials that could handle those conditions without failing.

Asbestos — a naturally occurring silicate mineral — was widely regarded as uniquely suited to power plant applications: Extreme heat resistance — withstands temperatures well above 1,000°F; Tensile strength — holds structural integrity under mechanical stress; Chemical corrosion resistance — performs in steam and combustion environments; Low thermal conductivity — efficient insulation per unit of thickness; Low cost and abundant supply — from domestic and Canadian mines.

General Equipment at Darby Power Station

The equipment below represents the systems and infrastructure documented or typically present at this facility during the era when asbestos-containing materials were specified in industrial construction. This is general facility-equipment reference — not a legal attribution of any specific product, manufacturer, or exposure event to this facility. Material-category and manufacturer information is addressed in the AsbestosIndex Product Crosswalk linked under the records table below.

Boilers View crosswalk › Steam Turbines View crosswalk › Steam Traps View crosswalk › Condensers View crosswalk › Feedwater Heaters View crosswalk › Cooling Towers View crosswalk › Pipe Insulation View crosswalk › Block Insulation View crosswalk › Refractory Lining View crosswalk › Valves View crosswalk › Gaskets View crosswalk › Pumps View crosswalk ›

Documented Asbestos Evidence

The records below are verified, state-documented asbestos removals at this facility. Each entry represents a regulated abatement project where the Ohio Environmental Protection Agency (Ohio EPA) was notified under federal NESHAP rules, the work was logged, and the asbestos-containing material was confirmed and removed under regulated conditions. These are not allegations or estimates — they are paper records tying documented asbestos-containing material to this specific site.

No Ohio EPA NESHAP abatement notifications have been identified for this facility in current public records. Per the framing above, absence of state-agency documentation should not be read as absence of asbestos — only as absence of a formal, regulated abatement event meeting reporting thresholds. Workers who recall encountering pipe insulation, block insulation, gaskets, or other asbestos-era construction materials at this facility may still have viable claims regardless of whether a state record exists.

Material Categories in Documented Records

The materials documented above (and similar asbestos-containing materials commonly encountered in records of this type) appear in the AsbestosIndex catalog with historical manufacturer and trust-fund information. Click a category to view manufacturers historically associated with that material:

Thermal System Insulation View crosswalk › Asbestos-Cement Board View crosswalk › Pipe Insulation View crosswalk › Roofing & Flashing View crosswalk › Spray Fireproofing View crosswalk › Floor Tile & Mastic View crosswalk › Ceiling Tile View crosswalk › Gaskets & Packing View crosswalk ›

Who May Have Been Exposed at Darby Power Station

Construction-phase workers — including members of Heat and Frost Insulators Local 1 (St. Louis, MO), UA Local 562 (St. Louis, MO), Boilermakers Local 27 (St. Louis, MO), and related trade unions — allegedly encountered the heaviest asbestos-containing material concentrations during initial facility construction and early expansion phases. During construction, raw asbestos-containing insulation materials were commonly mixed, cut, and shaped on-site in open-air or minimally ventilated environments; mixed into insulating cements by hand; sawed into sections using standard carpentry tools; and applied directly to hot piping surfaces.

Throughout the facility’s operational life, maintenance workers employed by AEP and its subsidiaries — along with contract workers from Heat and Frost Insulators Local 1 (St. Louis, MO), Plumbers and Pipefitters UA Local 562 (St. Louis, MO), Boilermakers Local 27 (St. Louis, MO), and related unions — may have been exposed to asbestos-containing materials on a recurring, often daily, basis. Routine maintenance tasks allegedly included inspecting, repairing, and replacing boiler tubes; repairing cracked or damaged steam piping insulation; maintaining turbines and generators involving asbestos-containing gaskets, packing materials, and equipment insulation; and replacing asbestos-containing gaskets and seals. Insulators carry the highest documented rates of asbestos-related disease among power plant workers, installing and maintaining thermal insulation on steam piping, boilers, turbines, and related equipment. Members of UA Local 562 (Plumbers and Pipefitters, St. Louis, MO) who worked at comparable facilities may have been exposed while handling asbestos-containing gaskets and packing materials; removing and replacing asbestos-containing pipe insulation; working adjacent to insulators; and performing maintenance on equipment reportedly containing asbestos-containing components.

Critical Filing Deadline & Next Steps

Ohio law gives mesothelioma and asbestos-disease claimants 2 years from the date of medical diagnosis to file a personal-injury lawsuit (ORC § 2305.10). For wrongful-death claims after an asbestos-related death, the filing window is 2 years from the date of death (ORC § 2125.02). The two deadlines run on separate tracks — preserving one does not extend the other.

The personal-injury clock runs from diagnosis, not from exposure. Mesothelioma latency is typically 20 to 50 years, so workers exposed in the 1950s–1980s are being diagnosed today.

Practical first steps

  1. Document what you remember. Pay stubs, W-2s, union cards, photographs, coworker names, and dates of employment. The WorkChain widget on this page can save a copy you can email yourself.
  2. Preserve medical records. Pathology reports, biopsy results, imaging, and pulmonary-function tests are central to both civil claims and trust-fund filings.
  3. Identify household members. Spouses who laundered work clothing and children of plant workers are eligible for secondary-exposure claims when diagnosed with an asbestos-related disease.
  4. Speak with an asbestos attorney with Ohio experience. The first conversation is free and confidential. Asbestos trust-fund claims and civil claims run on different tracks — both can be pursued in parallel.

Asbestos-Related Diseases

Asbestos fiber exposure can cause several specific diseases that typically appear decades after the original exposure. The latency period — the gap between exposure and diagnosis — usually runs 20 to 50 years. That's why workers exposed in the 1960s, 1970s, and 1980s are receiving diagnoses today.

Mesothelioma

A rare, aggressive cancer that affects the lining of the lungs (pleural mesothelioma), abdomen (peritoneal), or heart (pericardial). Mesothelioma is almost exclusively caused by asbestos exposure, which is why a mesothelioma diagnosis often points directly to historical workplace exposure. Average latency from first exposure to diagnosis is 30-50 years.

Asbestosis

A chronic, non-cancerous scarring of lung tissue caused by inhaled asbestos fibers. Asbestosis causes progressive shortness of breath, persistent cough, and reduced lung function. It does not improve with treatment, and it is a recognized basis for compensation under most trust schedules and civil claims.

Lung Cancer

Asbestos exposure significantly increases the risk of lung cancer, particularly when combined with a history of smoking. Asbestos-related lung cancer is compensable under the same trust schedules and civil claim avenues as mesothelioma.

Other Recognized Diseases

Pleural plaques, pleural thickening, laryngeal cancer, ovarian cancer, and certain gastrointestinal cancers are also recognized as asbestos-related under various trust schedules and case-law authorities, though eligibility and proof requirements vary by claim type.

If you have any of these diagnoses and you worked at this facility, lived with someone who did, or were exposed in any documented capacity, you may have a claim worth pursuing. Speak with an attorney before assuming you don't qualify.

Cross-State & Regional Corridor Workers

Workers and tradespeople based in Ohio and Illinois did not limit their employment to facilities within their home states. The Mississippi River industrial corridor — stretching from St. Louis northward through Madison County, Illinois, to Granite City, Alton, and beyond — supplied skilled union labor to power stations, chemical plants, and industrial facilities across a broad multi-state region. Missouri-based union members regularly worked out-of-state on construction and maintenance projects, and Ohio power plant projects routinely drew tradespeople from St. Louis-area locals. Members of Heat and Frost Insulators Local 1, UA Local 562, and Boilermakers Local 27 — all based in the St. Louis area and serving the Mississippi River industrial corridor — may have worked at Darby Power Station or at comparable facilities up and down the corridor.

Missouri- and Illinois-based tradespeople working on large power plant projects during this era routinely traveled to facilities outside their home states. Union hiring hall records from St. Louis-area locals reflect regular out-of-state project work during this construction boom period.

Data Sources

Information about facility equipment, industrial materials, and occupational records referenced on this page is drawn from publicly available sources where applicable, including:

If specific equipment or product claims in this article are sourced from a non-public database, the source is identified parenthetically within the text above.