About Boonville R-I Boonville Missouri

The Boonville R-I School District, serving Cooper County in central Missouri, constructed and renovated school buildings between 1945 and 1980 under specifications that called for asbestos at nearly every systems-level application. Architects specified it for fire resistance and durability. Manufacturers knew the health risks. The tradesmen installing and maintaining these materials were never told.

Missouri Boiler Registry records identify registered pressure vessels at Boonville R-I facilities:

  • Boiler Type: Fire-tube and water-tube boilers
  • Manufacturers: AJAX and AO Smith
  • Installation Period: 1964 through 1975
  • Primary Locations: Boiler room and primary school building

Boilers of this era required asbestos at every critical point in the system:

  • Block insulation — Asbestos Block and Thermobestos products wrapped directly around boiler surfaces
  • Compressed sheet gaskets — gaskets and packing and asbestos gaskets at every flanged connection and inspection port
  • Rope packing — high-temperature pipe insulation rope in valves throughout the system
  • Pipe insulation — calcium silicate pipe insulation and Thermobestos wrapping distribution piping from the boiler to every heated space
  • Mudded fitting joints — asbestos-containing insulating cement applied over elbows, tees, and flanges, then covered with asbestos cloth and tape

The boiler room consistently produced the highest airborne fiber concentrations of any location in a school building.

Missouri Department of Natural Resources (MDNR) records document 21 total NESHAP notification projects at Boonville R-I facilities:

  • 9 abatement projects (asbestos removed)
  • 11 courtesy notifications (asbestos identified, plans filed)
  • 1 demolition or renovation notification

These regulatory filings identify asbestos-containing materials across every major building system:

Thermal and Equipment Insulation:

  • calcium silicate pipe insulation and Thermobestos pipe insulation on hot-water distribution piping
  • and pipe insulation with mudded joint fittings
  • Thermobestos and boiler and tank block insulation

Building Materials:

  • and ceiling tile friable ceiling tile throughout school buildings
  • spray-applied ceiling texture and drywall with asbestos binder
  • Pabco and resilient floor tile and floor tile mastic
  • asbestos-containing linoleum

Fireproofing:

  • spray-applied fireproofing on structural steel members

General Equipment at Boonville R-I Boonville 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.

Central Boilers View crosswalk › Utility Tunnels View crosswalk › Pipe Insulation View crosswalk › HVAC Air Handlers View crosswalk › Suspended Ceilings View crosswalk › Vinyl-Asbestos Floor Tile View crosswalk › Auditorium Curtains View crosswalk › Science Lab Hoods 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 boilers and pressure vessels were registered with the Missouri Department of Labor and Industrial Relations (DOLIR) for this facility. These are public records and have been introduced in asbestos exposure litigation to establish the presence of industrial heating and process equipment — and the contractors and inspectors who serviced it — at this site.

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 Boonville R-I Boonville Missouri

Boilermakers servicing AJAX and AO Smith boilers at Boonville R-I faced the heaviest asbestos exposures at the facility:

  • Removing and replacing Thermobestos and block insulation from boiler surfaces
  • Accessing boiler tubes for inspection and repair
  • Replacing gaskets and packing and compressed sheet gaskets
  • Replacing high-temperature pipe insulation rope packing in valves
  • Breaking away deteriorated insulation — generating visible dust clouds in enclosed boiler rooms

Pipefitters — including Plumbers and Pipefitters UA Local 562 members — maintained hot-water systems insulated with friable calcium silicate pipe insulation and Thermobestos covering. Exposure occurred when:

  • Cutting existing pipe insulation to access a joint or make a new connection
  • Removing old insulation during pipe section replacement and applying new covering
  • Accessing mudded joint fittings
  • Replacing valve stem packing with high-temperature pipe insulation rope

Heat and Frost Insulators Local 1 (St. Louis) and Local 27 (Kansas City) members who worked at Boonville R-I applied, maintained, and stripped asbestos materials directly:

  • Cutting calcium silicate pipe insulation and Thermobestos pipe covering sections with a knife or saw
  • Mixing and troweling fitting cement
  • Stripping deteriorated and insulation from boiler surfaces and piping
  • Handling raw asbestos-containing products throughout full shifts
  • Working in confined spaces — boiler rooms, mechanical chases, crawl spaces — with no ventilation

HVAC mechanics at Boonville R-I faced exposure from multiple material categories:

  • and Thermobestos duct insulation
  • Canvas-and-asbestos vibration isolation connectors at equipment connections
  • spray-applied fireproofing — MDNR records document 2,400 square feet at Boonville R-I facilities
  • gaskets and packing and gasket materials
  • Friable ceiling tile and texture encountered while working above suspended ceilings

Electricians did not handle asbestos products directly, but they worked in every space where asbestos was present:

  • Above suspended ceilings containing friable ceiling tile and spray texture
  • In boiler rooms and mechanical rooms with aging, deteriorated insulation
  • In floor cavities where drilling and cutting disturbed floor tile mastic
  • Throughout the building wherever conduit runs required cutting through asbestos-containing wall and ceiling assemblies

Millwrights and maintenance workers faced cumulative asbestos exposure over years or decades:

  • Repair work on aging, deteriorating thermal insulation
  • Routine maintenance in boiler rooms and mechanical spaces
  • Disturbance of degraded asbestos materials during daily operations
  • Facility modifications that required cutting into or through asbestos-containing building assemblies

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.