About Iowa

Overview and Operating History

The Iowa Southern Utilities Keokuk Generating Station sat along the Mississippi River in Keokuk, Iowa — Lee County, southeastern corner of the state. Iowa Southern Utilities — later reorganized through a series of utility mergers that eventually folded operations into MidAmerican Energy Holdings — operated the Keokuk facility as a coal-fired steam generating station for decades during the mid-to-late twentieth century.

The Keokuk Generating Station was one of several coal-fired utility facilities in Iowa that reportedly relied heavily on asbestos-containing materials during the peak decades of plant construction and operation. Other Iowa utility and industrial facilities where workers may have encountered comparable asbestos-containing materials include Iowa Steel (Iowa City), Quaker Oats (Cedar Rapids), Rockwell Collins (Cedar Rapids), and John Morrell & Co. (Sioux City) — facilities where Iowa workers in the same trades and union locals may have accumulated significant asbestos exposure during overlapping employment periods.

Why Coal-Fired Plants Required Massive Quantities of Asbestos-Containing Materials

Coal-fired steam generating stations are thermally intensive industrial environments. They required large quantities of insulating materials to maintain operating temperatures in:

  • Boilers
  • Turbines
  • Feedwater heaters
  • Condensers
  • Steam lines and associated mechanical systems

From roughly the 1930s through the late 1970s, and in some cases into the early 1980s, the industry standard was to insulate these systems with asbestos-containing materials (ACMs) supplied by manufacturers Corporation.

Steam boilers at coal-fired plants operate at temperatures exceeding 1,000 degrees Fahrenheit. Every linear foot of steam piping, every valve, every turbine casing required thermal management. Through most of the twentieth century, asbestos-containing materials were the insulation of choice for high-temperature industrial applications because they were:

  • Extremely resistant to heat and fire
  • Inexpensive and widely available
  • Easy to work with in block, pipe covering, blanket, and cement forms
  • Durable under conditions of vibration and thermal cycling

Manufacturers marketed asbestos-containing insulation, gaskets, packing, and refractory products to utilities across Iowa and the upper Midwest, including facilities comparable to Keokuk.

General Equipment at Iowa

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 Iowa Department of Natural Resources (Iowa DNR) 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 Iowa DNR 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 Iowa

Asbestos-Containing Products Reportedly Present at the Facility

Based on the types of equipment installed at coal-fired steam generating stations of comparable vintage in Iowa and the upper Midwest, workers at the Keokuk Generating Station may have encountered the following categories of asbestos-containing materials:

Block Insulation and Pipe Covering

Corporation** and were dominant national suppliers of industrial block insulation and pipe covering during the peak years of power plant construction and operation. Workers at the Keokuk facility are alleged to have worked alongside asbestos-containing products bearing these manufacturers’ names on:

  • Steam lines
  • Boiler shells
  • Associated piping systems

Block insulation — rigid sections of calcium silicate or magnesia block, often containing high percentages of asbestos fiber — was applied to high-temperature boiler surfaces and steam headers. Pipe covering products of similar composition were fitted around steam and condensate return lines throughout the plant. block insulation and pipe covering materials were industry standards at comparable Iowa and Midwest power facilities during this era.

When workers cut, sawed, broke, or removed block insulation or pipe covering for maintenance access, the work allegedly released clouds of respirable asbestos dust. Workers in the immediate area — and workers in adjacent areas of the plant — may have inhaled those fibers without adequate protection.

Boilers and Equipment

, Inc.** (CE) was a premier manufacturer of utility boilers and related combustion equipment in the United States, supplying equipment to hundreds of coal-fired power plants including facilities in Iowa and the upper Midwest comparable to Keokuk. boilers reportedly incorporated asbestos-containing materials in:

  • Refractory linings and furnace insulation
  • Boiler casing insulation
  • Gaskets and expansion joint packing
  • Door seals and inspection port coverings

Workers who maintained, repaired, or worked near boilers — particularly during outages when boiler internals were accessed — may have been exposed to asbestos-containing materials associated with that equipment.

Steam Turbines and Turbine Insulation

Large steam turbines required asbestos-containing insulation on:

  • Casing surfaces
  • Steam admission components
  • Associated high-pressure piping

Turbine manufacturers including General Electric reportedly incorporated asbestos-containing insulation and gasket materials as standard equipment in turbines supplied to Iowa coal-fired facilities. Turbine outages — during which workers opened turbine casings, pulled gaskets, and disturbed insulation — were among the highest-risk activities for asbestos fiber release. Workers who participated in turbine overhauls and maintenance at the Keokuk Generating Station may have been exposed to asbestos-containing materials during these activities.

Feedwater Heaters

Feedwater heaters preheat water returning to the boiler, improving thermal efficiency. These pressure vessels and their associated piping systems were heavily insulated with asbestos-containing materials reportedly supplied by and during the facility’s operating era. Maintenance work on feedwater heaters — including opening the equipment for tube cleaning or repair — may have disturbed asbestos-containing insulation and released fibers into the breathing zone of workers in the area.

Gaskets, Packing, and High-Temperature Sealants

gaskets and packing and Industries**, among others, manufactured and supplied asbestos-containing gaskets and packing materials for use throughout coal-fired power plants. These products were reportedly used on:

  • Valve stems and flanged connections
  • Pump seals
  • Manhole covers and inspection ports
  • High-temperature equipment seals

When workers pulled valve gaskets during routine maintenance, removed packing from pump shafts, or broke and re-sealed high-temperature joints, they may have been exposed to asbestos fibers contained in these products.

Boiler Rope, Refractory Cement, and Maintenance Materials

manufactured asbestos-containing boiler rope and refractory cement products used in power plant maintenance and repair. These materials are alleged to have been used for:

  • Sealing gaps in boiler casings
  • Thermal gap-filling applications
  • Maintenance repairs requiring high-temperature-rated materials

Disturbing these materials during repair work may have exposed workers to asbestos fibers.

Insulation Products and Trade Names

Workers at the Keokuk Generating Station may have been exposed to asbestos-containing products bearing trade names including:

  • calcium silicate pipe insulation ( block insulation)
  • Thermobestos (thermal insulation products)
  • pipe insulation (pipe and equipment insulation)
  • spray-applied fireproofing (fireproofing and insulation spray)
  • Gold Bond and wallboard (building materials containing asbestos reportedly used in administrative areas and control rooms)

Additional ACM Sources Throughout the Plant

Beyond the major systems above, coal-fired power plants of this era typically contained asbestos-containing materials in:

  • Electrical insulation on wiring, switchgear, and panels supplied by General Electric and other equipment manufacturers
  • Floor tiles and ceiling tiles in control rooms and administrative areas, reportedly supplied by manufacturers including and others
  • Asbestos-containing gloves and thermal blankets used by maintenance workers
  • Gasket sheets and packing materials stocked in plant maintenance shops

⚠️ Critical Filing Deadline

Iowa law gives mesothelioma and asbestos-disease victims 2 years from the date of medical diagnosis to file a personal injury lawsuit (Iowa Code § 614.1(2A)). For wrongful death claims after an asbestos-related death, the filing window is 2 years from the date of death (Iowa Code § 614.1(2)). Miss either deadline by a single day and the right to file is permanently gone. No exceptions, no extensions.

About the two deadlines: Iowa keeps the personal-injury clock (Iowa Code § 614.1(2A)) and the wrongful-death clock (Iowa Code § 614.1(2)) on separate tracks. The 2 years personal-injury deadline runs from the date of diagnosis and applies to the diagnosed person's own claim while they are alive. The 2 years wrongful-death deadline runs from the date of death and applies to surviving family members. The two are independent — preserving one does not extend the other, and an asbestos attorney with experience in Iowa can keep both options open as the situation evolves.

The personal-injury clock runs from the date of medical diagnosis — not from the date of asbestos exposure. Mesothelioma can take 20 to 50 years to develop after exposure. Many workers are only now receiving diagnoses from exposures that occurred decades ago.

Treat the 2 years deadline as a hard outer limit, not a planning horizon.

⚠️ Why You Must Act Now

Iowa's filing window may sound like ample time. It is not. Every month that passes after a mesothelioma diagnosis is a month in which your case gets harder to build and your options narrow.

Witnesses Become Harder to Reach

The tradespeople who worked alongside mesothelioma victims at facilities of this era are now in their 70s and 80s. Witnesses from many years ago are harder and harder to contact by the day — coworkers who can testify about which asbestos-containing materials were used, who supplied them, and how the work was done are increasingly difficult to locate. Once first-hand testimony becomes unavailable, that record is gone.

Records Disappear

Employment records, union records, purchasing records, and product invoices that document exactly which asbestos-containing materials were used at this facility are being lost every year. Plants close. Corporate owners change. Storage facilities are cleared. Records that existed five years ago may not exist today.

Mesothelioma Cases Are Complex to Build

Identifying every responsible manufacturer and every jobsite across a tradesperson's career requires intensive investigation by experienced toxic-tort counsel. A case against the manufacturers who supplied asbestos-containing materials to this facility may involve dozens of defendants. That investigation takes time that waiting families do not have.

Asbestos Trust Fund Claims Run on a Separate Track

More than 60 asbestos bankruptcy trusts exist to compensate victims whose exposures came from manufacturers that have since gone bankrupt — including the Manville Personal Injury Settlement Trust, established after the 1982 Johns-Manville bankruptcy. Each trust has its own claim forms, exposure criteria, documentation requirements, and processing timelines. Pursuing trust-fund compensation in parallel with a lawsuit takes months. The trust-fund process should start now, not after you decide whether to file suit.

What To Do Next

If you or a family member has been diagnosed with mesothelioma, asbestosis, or another asbestos-related disease — and you worked at this facility, lived with someone who did, or worked at neighboring industrial sites in the corridor — the practical next steps are:

  1. Speak with an asbestos attorney with experience in Iowa. The first conversation is free, confidential, and creates no obligation. An experienced attorney will help you understand which trust-fund claims may apply, which civil claims are viable, and what documentation you should start gathering.
  2. Gather what you can about your work history. Pay stubs, W-2s, union cards, photographs, names of coworkers, and dates of employment all become important evidence. The WorkChain widget on this page can help you organize and email yourself a copy of your facility list.
  3. Preserve your medical records. Pathology reports, biopsy results, imaging, and pulmonary-function tests all become part of the legal record. Ask your treating physicians for full copies of everything in your chart.
  4. Identify household members who may also have been exposed. Spouses who laundered work clothing and children who hugged a parent returning from the plant are eligible for secondary-exposure claims when they have been diagnosed with an asbestos-related disease.
  5. Act before the filing deadline runs. Iowa's statute of limitations is a hard outer limit. Even if you are still in the middle of treatment decisions, beginning the legal process early preserves your options.

Get a free case evaluation from an asbestos attorney with experience in Iowa →

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.

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.