About Big Hollow Energy Center Festus Missouri
Big Hollow Energy Center sits in Festus, Missouri, Jefferson County — along the Mississippi River industrial corridor south of St. Louis. This corridor, stretching from St. Louis south through Jefferson County on the Missouri side and from Alton through Wood River and Granite City on the Illinois side, historically supported one of the densest concentrations of power generation, chemical manufacturing, and heavy industrial facilities in the central United States — and one of the highest documented regional concentrations of occupational asbestos exposure in American history.
The facility generates approximately 200 megawatts (MW) of power and has operated under Union Electric Co. (100% ownership) and Ameren Corporation (100% ownership after Union Electric’s corporate reorganization). Ameren, headquartered in St. Louis, ranks among the largest investor-owned electric utilities in the Midwest. The company operates comparable facilities including Labadie Energy Center (Franklin County, MO), Portage des Sioux Power Plant (St. Charles County, MO), Sioux Energy Center (St. Charles County, MO), and Rush Island Energy Center (Jefferson County, MO) — all situated along or near the Missouri-Illinois Mississippi River corridor, all operating under similar industrial conditions, and all with comparable asbestos exposure histories reportedly documented in NESHAP abatement records and occupational health litigation.
Big Hollow Energy Center operated as an oil and gas processing and power generation facility. Its industrial processes included high-temperature combustion operations, high-pressure steam generation and distribution, heat exchange operations, fuel processing and conditioning, and turbine and generator operation. These are the exact operating environments where asbestos-containing materials were used most heavily throughout the twentieth century.
General Equipment at Big Hollow Energy Center Festus 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 Big Hollow Energy Center Festus Missouri
Multiple trades and job classifications at facilities like Big Hollow Energy Center may have been exposed to asbestos-containing materials during normal work duties. Exposure was not limited to workers who directly installed or removed insulation — any worker present when asbestos-containing materials were disturbed may have inhaled fibers.
Insulators carry some of the highest documented historical asbestos exposure rates in any industrial trade. Members of Heat and Frost Insulators Local 1 (St. Louis), whose jurisdiction covered Jefferson County and the Big Hollow Energy Center site, may have experienced particularly intense exposure. Local 1 members worked throughout the Mississippi River corridor — dispatched to Union Electric and Ameren facilities including Labadie, Portage des Sioux, Sioux, Rush Island, and Big Hollow — and to Illinois-side facilities including Granite City Steel and Monsanto Sauget under reciprocal dispatch arrangements. Workers at Big Hollow Energy Center and comparable Ameren facilities may have been exposed to asbestos-containing materials when installing pipe insulation, boiler block insulation, and turbine insulation; cutting, sawing, or tearing asbestos-containing insulation products to fit irregular pipe configurations; removing and replacing worn insulation during maintenance outages, often inside confined boiler and turbine spaces with minimal ventilation; and working in enclosed spaces where fibers from deteriorating pipe insulation had accumulated over years of normal facility operation.
Members of Boilermakers Local 27 (St. Louis) and related locals performed installation, repair, and maintenance of boilers, pressure vessels, and heat exchangers at facilities throughout the Missouri-Illinois corridor. Boilermakers working inside boiler fireboxes and steam drums at facilities like Big Hollow may have been exposed to asbestos-containing refractory cements, gasket materials, and thermal insulation from multiple manufacturers.
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.
Cross-State & Regional Corridor Workers
The Mississippi River corridor location meant that Big Hollow Energy Center shared both a geographic and an industrial supply chain with comparably sized facilities on the Illinois side — including Granite City Steel (Madison County, IL), Monsanto Chemical (Sauget, IL), the Shell Oil Roxana Refinery (Wood River, IL), and the Clark Refinery (Wood River, IL). Insulators, boilermakers, pipefitters, and other tradespeople routinely moved between these facilities under union contract dispatch systems, carrying shared exposure histories across state lines.
Local 1 members worked throughout the Mississippi River corridor — dispatched to Union Electric and Ameren facilities including Labadie, Portage des Sioux, Sioux, Rush Island, and Big Hollow — and to Illinois-side facilities including Granite City Steel and Monsanto Sauget under reciprocal dispatch arrangements.
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.