About Union Electric Alma Plant Carroll County Missouri

The Alma Plant sits along the Missouri River in Carroll County, near the town of Alma in west-central Missouri. Union Electric Company owned and operated the facility until it merged with CIPSCO Incorporated in 1997 to form AmerenUE, now Ameren Missouri. That ownership chain matters in litigation — it identifies which entities bear legal responsibility for the asbestos exposure conditions that allegedly injured workers.

How the Plant Operated and Why Asbestos Was Everywhere

The Alma Plant is a coal-fired steam electric generating station. Coal burns, heat converts water to high-pressure steam, steam drives turbines. That process — from initial construction through at least the early 1980s — required asbestos in virtually every insulated, sealed, or fireproofed component. OSHA’s 1971 asbestos standard and the 1973 ban on spray-applied asbestos stopped new installations. They did not remove what was already in place. Workers disturbing legacy asbestos insulation during repair and maintenance faced exposure well into the 1980s and beyond. —

URGENT: If you worked at the Union Electric Alma Plant in Carroll County, Missouri — or washed the clothes of someone who did — asbestos you may have been exposed to decades ago may be causing your illness today. Missouri law gives you five years from diagnosis to file. **That clock is already running. Workers from Heat and Frost Insulators Local 1 members to electricians — and family members exposed to contaminated work clothes — developed mesothelioma, asbestosis, and lung cancer at rates far above the general population. This article explains what happened at the Alma Plant, who was exposed, and what legal remedies remain available. —

General Equipment at Union Electric Alma Plant Carroll County Missouri

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.

Industrial Boilers View crosswalk › Process Piping View crosswalk › Pipe Insulation View crosswalk › Block Insulation View crosswalk › Valves View crosswalk › Gaskets View crosswalk › Pumps View crosswalk › Heat Exchangers View crosswalk › Cooling Equipment 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 Missouri Department of Natural Resources (Missouri 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.

The following 3 project notification(s) are documented with the Missouri Department of Natural Resources (NESHAP program) for AMEREN Missouri in Moberly. These are public regulatory records. | Project ID | Year | Site / Building | Operation | ACM Removed | Contractor | |:———–|:—-:|:—————-|:———-|:————|:———–| | A6175-2013 | 2013 | Old Moberly Gas Plant | Renovation | 220sf frbl arc chute insl,246sf frbl clk,265sf trnst,225sf flr mstc,2400sf rf… | CENPRO Services, Inc. | | 6209-2013 | 2013 | Old Moberly Gas Plant-Diesel/Main connected-1 bldg | Demolition | TSI, glazing, tar coatings, mastic, asbestos-cement board (RACM-3341lf/220sf, NF I-120lf/2… | Spirtas Wrecking Company | | 1888 | 2014 | P#1441-4 Ameren-Missouri Meter Bank | A | 50lf Cat 1 non-frbl gasket material on meter bank | Asbestos Removal Services, Inc. |

Source: Missouri Department of Natural Resources, NESHAP Asbestos Abatement & Demolition/Renovation Notification Program — public regulatory records.

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 Union Electric Alma Plant Carroll County Missouri

Insulators — Heat and Frost Insulators Local 1

Insulators represented by Heat and Frost Insulators Local 1 (St. Louis, MO) allegedly received the heaviest asbestos exposure of any trade at the Alma Plant. Their daily work included:

  • Installing and removing calcium silicate insulation and pipe covering calcium silicate pipe covering** on high-pressure steam lines
  • Applying and pipe covering and insulationasbestos block insulation** to boilers, economizers, and air preheaters
  • Mixing Pabco 85% Magnesia and Carey’s Asbestos Cement by hand in enclosed spaces, generating dense dust clouds
  • Cutting calcium silicate insulation, pipe covering, and block insulation pipe covering with saws and knives, releasing respirable fiber directly into the breathing zone
  • Applying asbestos cloth and tape from Corporation** and others to valves, fittings, and irregular pipe surfaces
  • Tearing out old, friable asbestos insulation during maintenance turnarounds

Both direct employees and union contractors who worked through mechanical contractors may hold claims against (now the Personal Injury Settlement Trust**), Pabco, Corporation**, and Philip Carey Company.

Pipefitters and Steamfitters — UA Local 562 and Local 268

Pipefitters represented by Plumbers and Pipefitters UA Local 562 (St. Louis, MO) and Local 268 (Kansas City, MO) worked inside and alongside asbestos-laden systems throughout the plant. Their exposure allegedly came from:

  • Cutting insulated pipe lines and disturbing calcium silicate insulation, pipe covering, and block insulation asbestos covering
  • Replacing gaskets and packing and spiral-wound gaskets gaskets on flanged steam and condensate connections
  • Pulling asbestos rope packing from valve stems and pump glands — packing allegedly manufactured by gaskets and packing and others
  • Working in boiler rooms and turbine areas saturated with , and Armstrong** fiber
  • Working alongside Local 1 insulators in confined spaces where released fiber had nowhere to go

Pipefitters who never directly touched asbestos products still breathed fiber released by insulator activities in spaces where calcium silicate insulation, pipe covering, block insulation, and spray fireproofing products were deteriorating around them.

Boilermakers — Boilermakers Local 27

Boilermakers from Boilermakers Local 27 (St. Louis, MO) maintained and repaired the most asbestos-intensive equipment at the plant. Their work allegedly included:

  • Rebricking and repairing boiler fireboxes using , and asbestos-containing refractory cements, castables, and block insulation
  • Working inside boiler drums and furnace cavities surrounded by deteriorating **Armstrong, and insulation
  • Replacing asbestos rope gaskets from gaskets and packing, spiral-wound gaskets, and Keasbey and Mattison on boiler access doors and inspection ports
  • Disturbing asbestos insulation on boiler walls, headers, and superheater sections
  • Performing confined-space work during outages with poor ventilation and concentrated fiber

Boiler interiors were uniquely dangerous: enclosed spaces with no air circulation meant fiber released from pipe covering, calcium silicate insulation, block insulation, and pipe insulation products stayed suspended at breathing level.

Electricians

Electricians at the Alma Plant faced documented asbestos exposure from multiple sources:

  • General Electric electrical arc chutes and switchgear components allegedly manufactured with asbestos insulation
  • Westinghouse motor and generator insulation allegedly containing asbestos — rewinding and servicing these units disturbed that material directly
  • Square D electrical wire and conduit insulated with asbestos-containing cloth in older installations
  • Ambient exposure from working in boiler rooms and turbine halls during Local 1 insulator and UA pipefitter activities
  • General Electric, Westinghouse, and Square D panelboard and breaker components that released fiber when drilled, cut, or modified

Millwrights

Millwrights maintained turbines, pumps, fans, and rotating equipment, encountering asbestos in:

  • Westinghouse and General Electric steam turbine casing insulation during inspection and repair
  • gaskets and packingand spiral-wound gaskets pump and valve packing materials
  • Gasket materials throughout mechanical systems allegedly manufactured by gaskets and packing, spiral-wound gaskets, and Keasbey and Mattison
  • Ambient fiber during simultaneous Local 1 insulation work in shared spaces

Maintenance Workers and Laborers

General maintenance workers, painters, and laborers faced exposure through:

  • Sweeping and cleaning areas where , and Armstrong** asbestos dust had settled on floors and equipment surfaces
  • Disturbing asbestos-containing floor tiles from **Pabco, joint compound, and during building maintenance
  • Working in general plant environments during outages where calcium silicate insulation, pipe covering, and block insulation fibers stayed airborne
  • Handling and disposing of asbestos debris without respiratory protection

Family Members: Secondary and Take-Home Exposure

Exposure did not stop at the plant gates. Workers reportedly carried asbestos fibers home embedded in work clothes, hair, and skin after handling pipe covering, calcium silicate insulation, gaskets and packing, and Armstrong insulation materials. Secondary exposure hit:

  • Spouses who shook out, sorted, and laundered heavily contaminated clothing carrying fibers from calcium silicate insulation, block insulation, and other insulation products
  • Children who greeted workers at the door, embraced them before they changed, or rode in vehicles where contaminated work clothes were stored
  • Household members who lived in homes where asbestos dust from **pipe covering and insulationand products settled on furniture, carpets, and surfaces

Mesothelioma has been diagnosed in spouses of power plant workers based solely on secondary exposure from laundering contaminated work clothes. If you are a family member of an Alma Plant worker and have received a mesothelioma diagnosis, your documented contact with contaminated clothing may support a legal claim against manufacturers, and gaskets and packing**. An asbestos cancer lawyer St. Louis can evaluate your case. —

Critical Filing Deadline & Next Steps

Missouri law gives mesothelioma and asbestos-disease claimants 5 years from the date of medical diagnosis to file a personal-injury lawsuit (Mo. Rev. Stat. § 516.120). For wrongful-death claims after an asbestos-related death, the filing window is 3 years from the date of death (Mo. Rev. Stat. § 537.100). 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 Missouri 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.

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.