About AK Steel Middletown Works Middletown Indiana

AK Steel Middletown Works is an integrated steel manufacturing facility in Middletown, Butler County, Ohio, on the Great Miami River. Despite its Ohio address, this facility directly affects Indiana residents for three reasons: thousands of Indiana residents — particularly from the Cincinnati metro area, southeastern Indiana, and the Lake County steel corridor — reportedly worked there as direct employees or contract workers; Indiana-based trades workers sent through Heat and Frost Insulators Local 1, Heat and Frost Insulators Local 27, Boilermakers Local 374, USW Local 1014 (Gary), Plumbers and Pipefitters UA Local 157, and UA Local 210 were regularly dispatched to this facility during peak asbestos-use decades; and workers who may have been exposed at this facility and later developed disease in Indiana have filed claims in Lake County Superior Court in Gary and Marion County Superior Court in Indianapolis — courts with established asbestos dockets.

The facility was founded in 1900–1935 as American Rolling Mill Company (Armco) with original construction reportedly using asbestos-containing insulation and refractory materials consistent with industrial specifications of the era. From 1935–1970, post-WWII expansion added blast furnaces, BOFs, open hearth furnaces, coke ovens, and rolling mills with peak asbestos use across all applications; thermal insulation, refractory materials, gaskets, and fireproofing containing asbestos were allegedly installed throughout. During the 1970–1989 period under Armco Steel / Armco Inc., occupational health research on asbestos accelerated, but legacy installations remained in place; maintenance and repair work on existing asbestos-containing products reportedly generated higher fiber concentrations than original installation. From 1999–2003, AK Steel Holding Corporation merged with Armco Inc. and the facility was renamed AK Steel Middletown Works, with steelmaking continuing as legacy asbestos hazard allegedly remained throughout existing infrastructure. From 2020–present, Cleveland-Cliffs Inc. acquired AK Steel, and the facility operates as part of Cleveland-Cliffs’ flat-rolled steel network; Cleveland-Cliffs also operates the former Bethlehem Steel Burns Harbor facility in Indiana.

Integrated steel production at Middletown Works ran at temperatures that eliminated most insulation options: blast furnaces above 2,300°F (1,260°C), basic oxygen furnaces at approximately 2,900°F (1,593°C), open hearth furnaces at 3,000°F (1,649°C) and above, coke ovens at approximately 2,000°F (1,093°C), and hot strip mills at 1,800–2,300°F. Asbestos was specified for virtually every high-temperature application at facilities like Middletown Works through the 1970s because it resists heat, withstands chemical attack, and was cheap. The same manufacturers sold asbestos-containing products to Gary Works, Burns Harbor, Inland Steel, and Middletown Works alike.

General Equipment at AK Steel Middletown Works Middletown Indiana

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.

Coke Ovens View crosswalk › Blast Furnaces View crosswalk › Open Hearth Furnaces View crosswalk › Pouring Ladles View crosswalk › Hot Tops View crosswalk › Rolling Mills View crosswalk › Pipe Insulation View crosswalk › Refractory Brick View crosswalk › Cooling Beds View crosswalk › Industrial Boilers View crosswalk ›

Documented Asbestos Evidence — Indiana

The records below are verified, state-documented asbestos removals at this facility. Each entry represents a regulated abatement project where the Indiana Department of Environmental Management (IDEM) 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 IDEM 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 AK Steel Middletown Works Middletown Indiana

Indiana-based trades workers sent through Heat and Frost Insulators Local 1, Heat and Frost Insulators Local 27, Boilermakers Local 374, USW Local 1014 (Gary), Plumbers and Pipefitters UA Local 157, and UA Local 210 were regularly dispatched to Middletown Works during peak asbestos-use decades. Indiana union members — including members of Boilermakers Local 374 and USW Local 1014 in Gary — were reportedly among the trades workers dispatched to Ohio Valley facilities during the wartime expansion of the 1940s–1950s. Indiana-dispatched members of Heat and Frost Insulators Local 1 and UA Local 157 may have been exposed throughout the multi-year capital project of BOF conversion and major renovation in the 1960s.

Workers may have been exposed to asbestos-containing materials across a wide range of applications including thermal insulation systems on high-temperature steam systems, hot liquor lines, and process piping; block insulation on furnace and equipment surfaces; vessel insulation on large tanks and reactors; refractory applications including furnace linings, ladle linings, torpedo cars, and tundishes; gaskets, seals, and packing including compressed asbestos fiber (CAF) gaskets at flanged pipe connections and braided asbestos packing at valve stems and expansion joints; boiler and steam distribution systems including boiler insulation, steam turbine insulation, condenser and feedwater heater insulation, and gaskets and turbine packing; electrical equipment including wiring insulation, switchgear, arc chutes, and panel boards; building materials and fireproofing including floor and ceiling tiles, roofing materials, spray-applied fireproofing on structural steel, and wall panels; and historical personal protective equipment including work gloves, aprons, and insulated blankets allegedly containing asbestos fibers.

Indiana — Filing Deadline & Next Steps

Indiana law gives mesothelioma and asbestos-disease claimants 2 years from the date of medical diagnosis to file a personal-injury lawsuit (Ind. Code § 34-11-2-4). For wrongful-death claims after an asbestos-related death, the filing window is 2 years from the date of death (Ind. Code § 34-23-1-1). 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 Indiana 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 — Indiana

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

Indiana’s industrial geography is inseparable from Ohio Valley steelmaking. Workers who spent careers moving between U.S. Steel Gary Works, Bethlehem Steel Burns Harbor, Inland Steel East Chicago, and facilities like Middletown Works handled the same asbestos-containing materials, worked for the same contractors, and belonged to the same union locals. That overlapping employment history is exactly why Indiana workers’ records from one facility routinely become evidence in claims arising from another. Indiana’s steel corridor — from Gary and East Chicago through Hammond and Burns Harbor — supplied generations of trades workers who were regularly dispatched to facilities across the Ohio Valley, including Middletown Works.

Data Sources — Indiana

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.