About the two deadlines: Missouri keeps the personal-injury clock (Mo. Rev. Stat. § 516.120) and the wrongful-death clock (Mo. Rev. Stat. § 537.100) on separate tracks. The 5-year personal-injury deadline runs from the date of diagnosis and applies to the diagnosed person's own claim while they are alive. The 3-year wrongful-death deadline runs from the date of death and applies to surviving family members. The two are independent — preserving one does not extend the other, and a Missouri asbestos attorney can keep both options open as the situation evolves.
Missouri Trades & Asbestos Exposure
Missouri'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
Heat & Frost Insulators Local 1 (St. Louis) · Local 27 (Kansas City)
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 27 (St. Louis) · Local 83 (KC)
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 562 (St. Louis) · Local 533 (KC)
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 562 (St. Louis — Plumbers Local 35 merged into 562 in 1999) · Local 8 (KC)
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 1 (St. Louis) · Local 124 (KC)
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 396 (St. Louis) · Local 10 (KC)
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
Mid-America Carpenters Regional Council — St. Louis Locals 57/92/97/1596 · Local 61 (KC)
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 36 (St. Louis) · Local 2 (KC)
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 1 (Eastern Missouri / St. Louis) · Local 15 (Kansas City — MO/KS/NE)
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
MACRC Millwrights — Local 1839 (St. Louis area) · Local 1529 (Kansas City)
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 513 (St. Louis) · Local 101 (KC)
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 110 (St. Louis) · Local 264 (KC)
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 shipyards, refineries, and power plants during outages
IUPAT DC 58 (St. Louis) · DC 3 (KC)
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 2 (St. Louis) · Local 20 (KC)
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
Carpenters Local 1310 (Floor Layer Division)
How They Were Exposed
- Cutting and installing vinyl-asbestos tile and asphalt-asbestos tile
- Scraping old VAT floors during commercial renovations
- Sanding and grinding floor mastic and tile backing
- Working with asbestos-containing tile adhesives ("cutback")
- Removing sheet vinyl flooring with asbestos backing felts
USW — Granite City, Sauget, Crystal City mills
How They Were Exposed
- Working at blast furnaces, coke ovens, and electric arc furnaces with asbestos refractory
- Handling asbestos-backed hot tops and ladle insulation
- Wearing asbestos gloves, aprons, and leggings for heat protection
- Replacing asbestos gaskets on high-temperature steam and process equipment
- Bystander exposure during furnace relines and refractory tear-out
USW (formerly OCAW/PACE) — Wood River, Sugar Creek
How They Were Exposed
- Operating reactors, distillation columns, and heat exchangers insulated with asbestos
- Replacing asbestos gaskets on pumps, valves, and flanges during turnarounds
- Walking process units saturated with friable asbestos during outages
- Repacking asbestos-rope packing in compressors and pump shafts
- Cleaning up after insulator and pipefitter work in operating areas
IBEW & UWUA — Ameren, KCP&L/Evergy, Empire
How They Were Exposed
- Watch standing in boiler rooms and turbine halls with asbestos lagging
- 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 Chrysler Fenton, GM Wentzville, and Ford St. Louis brake parts
- Working with asbestos-containing gaskets on engines and manifolds
BLE · SMART-TD · BMWE — UP, BNSF, Frisco, MoPac
How They Were Exposed
- Servicing locomotives with asbestos-lagged boilers (steam era) and brake shoes
- Maintaining and repairing asbestos-insulated steam-heat lines on passenger cars
- Working in locomotive shops with asbestos-containing arc chutes and friction
- Repacking journal boxes and brake cylinders with asbestos packing
- Stripping asbestos pipe covering in roundhouses and maintenance shops
Boilermakers, Pipefitters, Insulators — St. Louis Ship, Cape Girardeau Marine, KC barge yards
How They Were Exposed
- Installing asbestos pipe covering and block insulation in engine and fire rooms
- Working in confined spaces below decks during outfitting and repair
- Removing asbestos lagging during overhaul, conversion, and refit work
- Cutting and fitting asbestos-cement panels for bulkheads and decking
- Tearing out asbestos millboard from boiler casings and stack assemblies
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
Missouri Filing Deadline for Trade Workers
Missouri gives asbestos disease victims five years from diagnosis to file under Mo. Rev. Stat. § 516.120. Union members frequently worked at dozens of jobsites across decades — every facility, every contractor, every employer matters in establishing exposure. A Missouri 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 Missouri
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 Missouri attorney can evaluate your case — at no cost to you.
- Free case evaluation — no obligation to hire
- No attorney fee unless we make a financial recovery
- Statutes of limitations may limit the time you have to act
- Trust fund claims and civil lawsuits pursued simultaneously
Call: (314) 588-0558
Free consultation — available now
O'Brien Law Firm
Kirkwood, MO · Asbestos & Mesothelioma Claims
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