About St Clair | MI

St. Clair is the county seat of St. Clair County, one of Michigan’s most industrially active corridors. The St. Clair River connects Lake Huron to Lake St. Clair and forms the international border with Canada, making the area a natural hub for shipping, manufacturing, and chemical production. Through the early and mid-twentieth century, St. Clair County employed thousands of skilled and unskilled workers across several major industries.

Electric power generation — The Blue Water region hosted major power generation infrastructure, including the Palms Power Plant and St. Clair Power Plant operated by Detroit Edison (now DTE Energy). These facilities reportedly relied heavily on asbestos-containing insulation products, including calcium silicate pipe insulation, boiler wrap, and turbine gaskets throughout much of the twentieth century.

Chemical manufacturing and “Chemical Valley” — The St. Clair River corridor became known as “Chemical Valley.” Facilities allegedly associated with chemical processing — handling petrochemicals, polymers, and industrial gases — are reported to have used asbestos-containing materials extensively in piping systems, reactors, and heat exchangers.

Maritime and shipbuilding trades — The river’s position sustained boat building, ship repair, and marine maintenance throughout the region. Shipboard environments are historically among the most asbestos-saturated workplaces on record.

Construction and building trades — Commercial and industrial construction throughout St. Clair County through the twentieth century reportedly incorporated asbestos-containing fireproofing, floor tiles, roofing materials, joint compounds, and insulation, ceiling tile.

Automotive and parts manufacturing — St. Clair County was drawn into the automotive supply chain, with parts manufacturers operating throughout the region. Brake linings, clutch facings, and gaskets used in automotive manufacturing were commonly produced with asbestos-containing materials.

A coal-fired generating station located along the St. Clair River, the Palms Power Plant reportedly utilized asbestos-containing pipe insulation products including calcium silicate pipe insulation and Thermobestos, boiler block insulation, turbine packing, and high-temperature gaskets.

The St. Clair Power Plant was one of the largest power generating facilities in the region and reportedly relied extensively on asbestos-containing insulation and sealing products, including pipe insulation and valve packing materials.

Numerous petrochemical and chemical processing facilities operated along the Michigan side of the St. Clair River.

General Equipment at St Clair | MI

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 Michigan EGLE (Environment, Great Lakes & Energy) (Michigan EGLE) 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 Michigan EGLE 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 St Clair | MI

Workers at the Palms Power Plant — including boilermakers (potentially members of Boilermakers Local 27, based in the St. Louis region), pipefitters (potentially members of UA Local 562, St. Louis), insulators (potentially members of Heat and Frost Insulators Local 1, St. Louis), and maintenance electricians — may have been exposed to asbestos-containing materials during routine operations and major maintenance outages.

Workers from Missouri and Illinois union halls — including Heat and Frost Insulators Local 1, UA Local 562, and Boilermakers Local 27 — reportedly traveled to Michigan facilities for major outage and construction work during the mid-twentieth century, potentially accumulating exposures across multiple work sites.

Workers at chemical plants along the St. Clair River corridor — including pipefitters, chemical operators, maintenance mechanics, and construction contractors — may have been exposed to asbestos-containing pipe insulation, valve packing, pump seals, and thermal insulation used throughout processing units. Contractors and tradespeople in general construction and renovation throughout St. Clair County may have been exposed to asbestos-containing floor tiles and ceiling tiles, joint compounds, insulation board, roofing materials, spray-applied fireproofing materials, and sealants.

Critical Filing Deadline & Next Steps

Michigan law gives mesothelioma and asbestos-disease claimants 3 years from the date of medical diagnosis to file a personal-injury lawsuit (MCL § 600.5805(13)). For wrongful-death claims after an asbestos-related death, the filing window is 3 years from the date of death (MCL § 600.5852). 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 Michigan 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

Many workers who spent portions of their careers at Michigan facilities subsequently worked at facilities along the Mississippi River industrial corridor — at power plants such as AmerenUE’s Labadie Energy Center and Portage des Sioux Power Plant in Missouri, at Granite City Steel in Illinois, or at chemical facilities in the St. Louis region. Workers from Missouri and Illinois union halls — including Heat and Frost Insulators Local 1, UA Local 562, and Boilermakers Local 27 — reportedly traveled to Michigan facilities for major outage and construction work during the mid-twentieth century, potentially accumulating exposures across multiple work sites. The chemical processing corridor along the St. Clair River shares important industrial parallels with the Mississippi River industrial corridor on the Michigan-Illinois border. Workers who may have been exposed at both locations — for example, at facilities comparable to chemical operations in the St. Louis area or at plants along the Illinois side of the Mississippi — may have claims in multiple jurisdictions, each governed by different statute of limitations periods.

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.