Michigan Trades & Asbestos Exposure
Michigan's union construction trades and industrial workers handled, installed, removed, and worked alongside asbestos-containing materials on virtually every major industrial project from the 1930s through the 1980s. The trade you worked — and the specific tasks you performed during normal duty — determines which asbestos products you encountered and which manufacturers may be responsible. Below: documented exposure pathways per trade, drawn from public litigation records, OSHA inspection histories, and industrial hygiene literature.
Trade tasks listed below describe job functions documented in public records as routes of asbestos exposure for workers in these crafts. They are general exposure pathways, not claims about any individual worker's case.
Trades Exposed to Asbestos During Normal Duties
HFIA Local 25 (Southfield/Detroit/SE Michigan) · Local 47 (Lansing — rest of state including Grand Rapids, Kalamazoo, Flint, UP)
How They Were Exposed
- Cutting asbestos pipe covering to fit elbows, valves, and reducers
- Tearing off old pipe covering during repair and outage work
- Mixing asbestos insulating cement ("mud") in open buckets
- Knocking off asbestos block insulation from boiler walls
- Sawing asbestos block to fit irregular surfaces
- Spraying asbestos-containing fireproofing on structural steel
Boilermakers Local 169 (Allen Park — statewide Michigan)
How They Were Exposed
- Crawling inside boilers during annual outages alongside disturbed insulation
- Welding and cutting on asbestos-gasketed manways and access doors
- Replacing asbestos rope packing in soot blowers and steam valves
- Removing and repairing asbestos block lagging on boiler walls
- Cutting asbestos millboard for fireboxes and breechings
- Working in confined boiler spaces saturated with airborne fiber
UA Local 636 (Detroit/SE Michigan) · Local 370 (Flint) · Local 333 (Lansing) · Local 85 (Saginaw/Bay City) · Local 174 (Grand Rapids/West Michigan)
How They Were Exposed
- Cutting into insulated steam and process lines to add fittings
- Removing and replacing asbestos pipe gaskets at flanged joints
- Repacking valve stems with asbestos rope packing
- Working below insulators stripping pipe covering overhead
- Hot work (welding, brazing) on asbestos-insulated lines
- Maintaining steam traps, strainers, and heat exchangers with asbestos gaskets
UA Local 98 (Detroit/SE Michigan) · Local 370 (Flint) · Local 333 (Lansing) · Local 85 (Saginaw) · Local 174 (Grand Rapids)
How They Were Exposed
- Cutting asbestos-cement (transite) water and waste pipe
- Replacing valve packing and gaskets on domestic water lines
- Working on boiler-room piping insulated with asbestos covering
- Tying into existing systems where insulators had removed lagging
- Demolition cutting of cast-iron and AC pipe in renovation work
IBEW Local 58 (Detroit) · Local 948 (Flint) · Local 557 (Saginaw) · Local 665 (Lansing) · Local 275 (Grand Rapids) · Local 906 (Upper Peninsula)
How They Were Exposed
- Pulling wire through asbestos-insulated conduits and cable trays
- Replacing arc-chute components and phenolic boards in switchgear
- Working around insulators in boiler rooms, mechanical rooms, and pipe chases
- Installing motors with asbestos brake friction discs
- Cutting holes in asbestos-cement panels and transite walls
- Bystander exposure during shutdowns and turnarounds
Iron Workers Local 25 (statewide Lower Peninsula)
How They Were Exposed
- Erecting structural steel while sprayed asbestos fireproofing was applied
- Welding and burning on beams coated with asbestos-containing fireproofing
- Rigging in boiler rooms and turbine halls during insulation work
- Cutting and installing reinforcing bar through transite forms
- Ongoing exposure to settled fireproofing dust in completed steel buildings
Northern Midwest Regional Council of Carpenters (Warren HQ) — statewide Michigan
How They Were Exposed
- Cutting and sanding asbestos-cement transite siding and roofing
- Removing vinyl-asbestos floor tile during renovation
- Installing ceiling tile with asbestos-containing backing
- Working with asbestos-containing joint compound and texture sprays
- Demolition framing through walls insulated with asbestos batt
SMART Local 80 (Detroit/SE Michigan) · Local 7 (Lansing — rest of state)
How They Were Exposed
- Cutting and installing asbestos-lined HVAC duct in mechanical rooms
- Fabricating boiler breechings and stack components with asbestos millboard
- Working alongside insulators applying duct insulation
- Sealing duct joints with asbestos-containing mastic
- Removing old duct systems during retrofit projects
BAC Local 2 Michigan (Warren HQ — statewide bricklayers and refractory)
How They Were Exposed
- Mixing asbestos-containing refractory cement and mortar by hand
- Patching firebox linings on industrial boilers and furnaces
- Installing asbestos-backed hot tops in steel mill ladles
- Cutting refractory brick with abrasive saws and bricksaws
- Removing spalled refractory during furnace relines
UBC Millwrights Local 1102 (Warren — statewide Michigan)
How They Were Exposed
- Aligning and repairing turbines, pumps, and compressors with asbestos packing and gaskets
- Setting machinery on asbestos-cement bedplates and isolation pads
- Replacing asbestos clutch and brake friction in industrial drives
- Working in insulated pump rooms during shutdowns
- Maintaining conveyors and screens with asbestos-containing components
IUOE Local 324 (statewide Michigan)
How They Were Exposed
- Operating stationary boilers and steam plants insulated with asbestos
- Maintaining heavy equipment with asbestos brake linings and clutches
- Repacking valves and replacing gaskets on plant utilities
- Working in boiler rooms and engine rooms alongside insulators
- Crane and hoist work in industrial buildings during construction
LIUNA Local 1191 (Detroit/Wayne) · Local 1075 (Flint) · Local 499 (Lansing) · Local 355 (Grand Rapids/West Michigan)
How They Were Exposed
- Tear-off and demolition of insulated piping, boilers, and equipment
- Cleanup of asbestos debris and dust from work areas
- Mixing and tending insulating cement for insulators
- Hauling waste asbestos materials to dumpsters before abatement standards
- General labor in refineries, mills, and power plants during outages
IUPAT District Council 1M (Warren — statewide Michigan + Upper Peninsula MI)
How They Were Exposed
- Mixing and applying asbestos-containing joint compound ("mud")
- Sanding dried joint compound with hand and machine sanders
- Applying asbestos-containing texture sprays and acoustic ceilings
- Scraping old paint and texture from asbestos substrates
- Working in industrial environments with bystander exposure from insulators
Roofers Local 149 (Detroit + Mid-Michigan, Flint/Saginaw/Lansing)
How They Were Exposed
- Tearing off built-up roofing with asbestos-impregnated felts
- Cutting transite roofing panels with abrasive saws
- Applying asbestos-containing roofing mastic and flashing cement
- Installing asbestos-felt vapor barriers and underlayments
- Working on industrial roofs with asbestos-cement deck
Ford Rouge: Local 600 · Stellantis Detroit (Mack/Jefferson): Local 51 · Ford Wayne/Michigan Assembly: Local 900 · Stellantis Sterling Heights: Local 1700 · GM Flint Assembly: Local 598 · GM Flint Engine: Local 659 · GM Lansing Delta: Local 602 · GM Lansing Grand River: Local 652 · GM Saginaw Metal Casting: Local 668
How They Were Exposed
- Grinding and arc-grinding asbestos brake linings at Ford Rouge, Wayne, Flint, Lansing, and Sterling Heights plants
- Handling asbestos clutch facings, transmission friction parts, and brake shoes during build
- Casting work with asbestos-containing refractory at Saginaw Metal Casting and Flint foundries
- Bystander exposure to insulation work on plant utility piping throughout Big Three plants
- Cleanup duties with airborne fiber in stamping and paint shops
USW Local 1299 (US Steel Great Lakes Works / Zug Island / Ecorse / River Rouge, idled 2020)
How They Were Exposed
- Working blast furnaces, coke ovens, and BOFs at Great Lakes Works (Ecorse/River Rouge)
- Handling asbestos-backed hot tops and ladle insulation
- Wearing asbestos gloves, aprons, and leggings during heat operations
- Replacing asbestos gaskets on rolling mill drives and reheat furnaces
- Bystander exposure during furnace relines and refractory tear-out
IBEW & UWUA — DTE Energy, Consumers Energy, Lansing BWL
How They Were Exposed
- Watch standing in boiler rooms with asbestos lagging at Monroe, Belle River, Karn-Weadock, Campbell, and Eckert stations
- Maintaining feedwater pumps and condensate systems with asbestos packing
- Inspecting and tagging out equipment during annual boiler outages
- Sampling and adjusting steam systems through insulated valves
- Bystander exposure during boilermaker and insulator outage work
UAW (plants) · IAM (shops) · Independents
How They Were Exposed
- Blowing out brake drums with compressed air during brake jobs
- Grinding and arc-grinding asbestos brake linings to size
- Replacing asbestos clutch facings in cars and trucks
- Handling asbestos brake parts from major aftermarket suppliers
- Working with asbestos-containing gaskets on engines and manifolds
UA · SMART · IBEW (combined HVAC trades)
How They Were Exposed
- Servicing chillers and air handlers with asbestos-insulated cabinets
- Replacing fan-coil units in schools, hospitals, and office buildings
- Repairing steam radiators wrapped in asbestos covering
- Disturbing asbestos pipe insulation during ductwork penetrations
- Removing old asbestos-lined boilers and furnaces
SEIU · Independent — schools, hospitals, civic buildings
How They Were Exposed
- Stripping and waxing vinyl-asbestos tile floors with high-speed buffers
- Cleaning up debris in boiler rooms and mechanical chases
- Patching damaged asbestos pipe insulation with tape or cement
- Sweeping up dust from deteriorating ceiling tiles and pipe covering
- Daily work in buildings with friable asbestos before AHERA
Michigan Filing Deadline for Trade Workers
Michigan gives asbestos disease victims three years from diagnosis to file under MCL § 600.5805. Union members frequently worked at dozens of jobsites across decades — every facility, every contractor, every employer matters in establishing exposure. A Michigan asbestos attorney can help reconstruct your full work history and identify every responsible product manufacturer and premises owner.
Connect With an Asbestos and Mesothelioma Attorney with Experience in Michigan
A diagnosis of mesothelioma or an asbestos-related illness may entitle you and your family to significant compensation through asbestos trust funds and civil litigation. An experienced Michigan attorney can evaluate your case — at no cost to you.
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