About Callaway Nuclear Plant Callaway County Missouri
Facility Overview and Location
The Callaway Nuclear Plant sits on approximately 2,700 acres along the Missouri River in Callaway County, roughly 10 miles southeast of Fulton. Union Electric Company — today known as Ameren Missouri — developed the project beginning in the early 1970s to meet growing regional electricity demand. - Construction began: 1975
- Initial criticality: October 1984
- Commercial operation began: December 19, 1984
- Current status: Operational under Ameren Missouri management
- Reactor type: Westinghouse pressurized water reactor
A planned second unit, Callaway Unit 2, was cancelled in 1981 before construction began. That cancellation does nothing to reduce the asbestos exposure Missouri workers sustained during the nine-year construction of Unit 1.
The Scale of Construction — and the Scale of Exposure
At peak construction, between 3,000 and 5,000 workers were on site simultaneously. Every worker — regardless of trade — breathed the same air in the same buildings where asbestos was being cut, mixed, applied, and removed around the clock. The Callaway facility includes:
- A reactor containment building
- A turbine building with massive steam turbines and associated piping
- An auxiliary building housing cooling systems, pumping equipment, and reactor support systems
- A fuel handling building
- Extensive underground pipe runs and mechanical galleries
- Miles of insulated piping from small-diameter instrument lines to massive main steam lines
Every pipe, vessel, valve, and piece of equipment in those structures required thermal insulation. —
General Equipment at Callaway Nuclear Plant Callaway 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.
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.
No Missouri 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:
Who May Have Been Exposed at Callaway Nuclear Plant Callaway County Missouri
Trades and Occupations at Highest Risk
Workers across virtually every construction and maintenance trade encountered asbestos at Callaway. Those at highest risk include:
Insulators (Heat and Frost Insulators Local 1, St. Louis) — applied pipe covering, calcium silicate pipe insulation sections, and block insulation fitting insulation daily; the most heavily exposed trade on the Callaway jobsite
Pipefitters and Plumbers (UA Local 562, St. Louis) — worked continuously at flanged connections throughout Callaway’s piping systems, cutting and disturbing pipe covering and calcium silicate insulation insulation and installing gaskets and packingand gaskets and packing materials at every connection point
Boilermakers (Local 27) — worked steam generators and pressure vessels covered in pipe covering and block insulation block insulation in confined spaces with no meaningful air circulation during peak construction
Ironworkers and Structural Steel Workers — worked directly beneath and around spray-applied fireproofing spray fireproofing operations in Callaway
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
- 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.
- Preserve medical records. Pathology reports, biopsy results, imaging, and pulmonary-function tests are central to both civil claims and trust-fund filings.
- 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.
- 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:
- EPA ECHO Facility Compliance Database — enforcement and compliance records for industrial facilities
- OSHA Establishment Search — federal workplace inspection history
- EIA Form 860 Plant Data — power-plant equipment and ownership records (where applicable)
- Missouri Department of Natural Resources (MDNR) NESHAP asbestos abatement notification records
- Published asbestos trial and trust fund records (publicly filed court documents)
- AsbestosIndex Product & Manufacturer Crosswalk — historical asbestos-containing product schedules linked to manufacturers
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.