General Equipment at Francis Howell R-III St. Charles 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.

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.

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:

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 Francis Howell R-III St. Charles County Missouri

Asbestos exposure at Francis Howell R-III followed the work. The men who physically disturbed asbestos-containing materials — who cut it, broke it, removed it, swept it up, or worked nearby while others did — carried the greatest fiber burden.

Boilermakers

Boilermakers servicing the registered Adamson, AO Smith, Bryan, and Cleaver Brooks equipment at Francis Howell facilities faced some of the most concentrated asbestos exposures of any trade:

  • Opening fireboxes for inspection required removing or breaking through asbestos block insulation**
  • Replacing refractory brick meant handling asbestos-containing materials throughout the firebox interior
  • Replacing rope gaskets on access doors meant cutting and fitting asbestos rope packing** — sawing, grinding, and hand-fitting fiber-laden rope directly in the breathing zone
  • Repairing or replacing boiler jacket insulation required demolishing existing Thermobestos and calcium silicate pipe insulation asbestos-containing lagging
  • Boiler rooms were enclosed spaces — fibers had nowhere to dissipate

Fiber concentrations during active boiler maintenance ran in the range of 5–50 fibers per cubic centimeter — 50 to 500 times the current OSHA permissible exposure limit. If you are a boilermaker diagnosed with mesothelioma or asbestos cancer after working at Francis Howell facilities, an asbestos cancer lawyer can evaluate your exposure history and identify every solvent defendant and trust fund available to you.

Pipefitters and Steamfitters

The 400 linear feet documented in MDNR records covered only what was removed during formal abatement — not the full original scope of insulated pipe. Pipefitters disturbed asbestos at every stage of the work:

  • Installing pipe required cutting and fitting pre-formed pipe covering manufactured with asbestos fiber — calcium silicate pipe insulation** (15% chrysotile asbestos), Thermobestos (20–25% asbestos), pipe insulation**, and high-temperature pipe insulation**
  • Repairing leaks required breaking away existing insulation — generating visible dust clouds
  • Replacing valve packing and flange gaskets meant cutting Cranite** sheet gasket material (50–80% asbestos by weight) with a knife or grinding it to fit, releasing fibers directly into the breathing zone
  • Wrapping fittings with asbestos tape** to seal joints
  • Mixing and applying asbestos-based pipe cement** over wrapped connections

Pipefitters at Francis Howell R-III performed this work across careers spanning 20–40 years. [LINK: asbestos-exposure-pipefitters]

Insulators — Heat and Frost Insulators Local 1 (St. Louis)

Union insulators from Heat and Frost Insulators Local 1 were the trade most directly responsible for applying and later removing asbestos thermal insulation throughout the district. They carry among the highest mesothelioma mortality rates of any occupational group. Their work included:

  • Cutting pre-formed pipe covering — 15–50% chrysotile asbestos by weight — to fit around pipe bends and fittings in enclosed spaces
  • Installing and cementing asbestos boiler block insulation** around combustion chambers
  • Applying asbestos pipe cement** and finishing plaster over pipe covering
  • Wrapping fittings with asbestos cloth** and asbestos-containing tape
  • Spray-applying spray-applied fireproofing and Superex fireproofing — containing 5–15% asbestos — to ductwork and structural members
  • Removing the insulation they had previously installed years later — a task that generated higher fiber concentrations than original installation because aged insulation fractures and releases fibers more readily

Insulators from Local 1 documented work at Francis Howell R-III facilities beginning in the 1960s and continuing through the 1980s. The average latency period between initial asbestos exposure and mesothelioma diagnosis runs 35–45 years, which means workers exposed in the 1970s are being diagnosed now. If you are a union insulator diagnosed with an asbestos-related disease, a mesothelioma lawyer in Missouri with experience in trade union exposure cases can identify every viable defendant and every applicable trust fund before the Missouri filing deadline closes your claim.

HVAC Mechanics

HVAC mechanics at Francis Howell facilities worked on ductwork and air handling units wrapped or lined with asbestos-containing insulation board and blanket. They also worked throughout mechanical rooms and ceiling chases where pipe and boiler insulation was overhead and underfoot. Their exposure came from:

  • Disturbing spray-applied fireproofing spray fireproofing and Superex asbestos duct insulation when removing or replacing ductwork sections
  • Working in mechanical rooms where pipefitters and insulators were actively breaking apart calcium silicate pipe insulation and Thermobestos pipe insulation**

Fiber concentrations in enclosed mechanical rooms during concurrent insulation work by other trades affected every worker in the space — what industrial hygienists call bystander exposure. It is legally sufficient to establish causation.

Electricians

Electricians at Francis Howell facilities did not need to touch asbestos-containing materials to be exposed. Their exposure came from:

  • Working in spaces where other trades were actively disturbing and asbestos pipe insulation** and boiler insulation**
  • Threading conduit through insulated pipe chases and ceiling plenums where friable insulation was overhead and falling debris was routine
  • Running wire through mechanical rooms during boiler maintenance outages — the same enclosed, poorly ventilated spaces where fiber concentrations spiked highest

Bystander exposure to asbestos in enclosed mechanical spaces has been established as a causative factor in mesothelioma in

For informational purposes only. Not legal advice. No attorney-client relationship is created by reading this page. © 2026 Rights Watch Media Group LLC — Disclaimer · Privacy · Terms · Copyright

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.