Asbestos Exposure at Hills and Dales General Hospital — Cass City, Michigan

About Asbestos Exposure at Hills and Dales General Hospital — Cass City, Michigan

Central Boiler Systems: The Primary Asbestos Exposure Zone

Hills and Dales reportedly relied on a central boiler plant to generate the steam and hot water needed to heat the facility and supply domestic hot water throughout the building. These central plants were the mechanical heart of any hospital — and they were densely packed with asbestos-containing equipment and insulation.

Boilers were commonly insulated with block insulation and finishing cements that allegedly contained chrysotile and amosite asbestos. Products reportedly specified and installed in Michigan hospital boiler rooms during this period included:

• Thermobestos** pipe covering and block insulation
• calcium silicate pipe insulation** pipe insulation systems
• pipe insulation and block products
• spray-applied fireproofing** spray-applied finishing systems
• boiler and equipment components with asbestos-containing gaskets and packing materials
• boiler units with asbestos-insulated design specifications
• Chrysotile and amosite-containing block products from and ceiling tile

When boilermakers repaired, replaced, or simply worked near this insulation while it was being disturbed, they may have been exposed to fiber releases that far exceeded safe exposure levels — if any safe level for asbestos exposure exists at all.

The boiler room environment at a Michigan rural hospital like Hills and Dales was physically comparable to the central utility plants found at large industrial sites throughout the state. Boilermakers and pipefitters who rotated between commercial and industrial work — including members of Boilermakers Local 169 based in Detroit and tradesmen affiliated with Pipefitters Local 636 — would have encountered the same manufacturers’ products, the same insulation systems, and the same hazardous conditions whether their employer sent them to a hospital in Cass City or a power plant in Southeast Michigan.

If you worked in or around the boiler plant at Hills and Dales General Hospital and you have since been diagnosed with mesothelioma or an asbestos-related disease, contact a mesothelioma lawyer Michigan immediately. The three-year filing deadline under MCL § 600.5805(2) is counting down from the day you received that diagnosis.

Steam Distribution and Piping Systems: Continuous Asbestos Exposure Risk

Steam distribution systems ran through pipe chases, mechanical rooms, and crawl spaces throughout the hospital. These systems created ongoing asbestos exposure risks for multiple trades:

• Pipefitters and steamfitters — many of whom were members of Pipefitters Local 636 (Detroit) or other Michigan UA locals — are alleged to have disturbed pre-existing pipe insulation routinely: cutting sections away, fitting new joints, and sweeping debris without respiratory protection
• Workers in confined spaces where poor ventilation allowed asbestos fibers from Thermobestos**, calcium silicate pipe insulation**, and Armstrong products to accumulate and remain suspended in the breathing zone for extended periods
• Maintenance crews who performed routine valve replacements, joint repairs, and system modifications using products that may have included gaskets and packing asbestos-containing packing and gasket materials

Each disturbance potentially released clouds of asbestos fibers into confined, poorly ventilated spaces. Workers in the Thumb region of Michigan — many of whom were members of regional union locals affiliated with the Michigan AFL-CIO — routinely worked on steam systems that had been installed by insulators belonging to Asbestos Workers Local 25 (Detroit), one of Michigan’s primary Heat and Frost Insulators union locals. The products those original insulators specified and applied — including Thermobestos, calcium silicate pipe insulation, and Armstrong systems — remained in place for decades, degrading and releasing fibers each time subsequent tradesmen disturbed them.

Workers who disturbed steam system insulation at Hills and Dales — even briefly, even incidentally, even years ago — may have valid civil claims available right now. But Michigan’s three-year statute of limitations under MCL § 600.5805(2) runs from the date of diagnosis, not the date of exposure.

HVAC Systems and Above-Ceiling Asbestos Exposures

HVAC systems in hospitals of this construction era frequently incorporated asbestos in multiple components:

• Flexible duct connectors reportedly containing asbestos fibers
• pipe insulation and calcium silicate pipe insulation duct wrap insulation
• Vibration isolation materials for equipment mounting
• Plenum areas above suspended ceilings

Those plenum areas presented additional exposure zones. They reportedly contained:

• Gold Bond and wallboard asbestos-containing ceiling tiles
• spray-applied fireproofing** spray-applied fireproofing on structural members
• high-temperature pipe insulation duct board with asbestos-containing adhesives
• Pabco products with asbestos fibers
• Electrical conduit wrapped or coated with asbestos-containing materials

Any tradesman who worked above the ceiling line — electricians pulling wire, HVAC mechanics servicing equipment, maintenance workers accessing distribution systems — may have been exposed to fibers released from these materials. Michigan HVAC mechanics working in rural hospital facilities like Hills and Dales often had no way of knowing that the above-ceiling environment they entered had been installed by insulators using asbestos products that Asbestos Workers Local 25 and related trades had applied throughout Michigan hospitals and industrial facilities during the 1950s, 1960s, and 1970s.