Mesothelioma Lawyer Missouri: Asbestos Exposure at Mobil Oil Joliet Refinery

Missouri Residents — Time-Sensitive Legal Alert If you or a family member has been diagnosed with mesothelioma or asbestosis, Missouri law gives you five years from the date of diagnosis to file a personal injury claim under Mo. Rev. Stat. § 516.120. Miss that deadline and you lose the right to compensation — permanently. Pending legislation (HB1649) would impose new trust disclosure requirements for cases filed after August 28, 2026. Call a Missouri mesothelioma attorney today.

If You Worked at This Facility

Workers at the Mobil Oil Joliet Refinery in Joliet, Illinois may have been exposed to asbestos-containing pipe insulation, gaskets, valve packing, and refractory materials throughout their careers. Asbestos-containing materials from Johns-Manville, Owens-Illinois, Garlock Sealing Technologies, and Armstrong World Industries were reportedly present and in use at this facility.

If you or a family member received a mesothelioma or asbestosis diagnosis, you may have claims against the companies that supplied those materials, against Mobil Oil Corporation and its successor ExxonMobil, and against trust funds established by bankrupt asbestos manufacturers. Missouri residents can file claims against asbestos trust funds simultaneously with lawsuits in Missouri courts. An experienced Missouri asbestos attorney can help you pursue both.

Facility Background

Operations and Workforce

The Mobil Oil Joliet Refinery operated in Joliet, Illinois — Will County — as one of the Midwest’s major petroleum refining operations for most of the twentieth century. The facility processed crude oil into gasoline, diesel fuel, lubricating oils, and petrochemical feedstocks, serving regional markets that included Missouri communities along the Mississippi River industrial corridor.

At peak periods, the facility reportedly employed hundreds of workers across skilled trades, maintenance, operations, and support roles. Contract labor included members of Heat and Frost Insulators Local 1 (St. Louis, MO) and Plumbers and Pipefitters UA Local 562 (St. Louis, MO). The workforce drew from Joliet and surrounding communities in Will, Grundy, DuPage, and Cook counties, with some workers reportedly commuting from Missouri and Illinois cities including St. Louis and Granite City.

Corporate Ownership and Successor Liability

• Mobil Oil Corporation served as primary operator during most of the facility’s active life.
• ExxonMobil Corporation assumed legal succession when Mobil merged with Exxon in 1999.

Successor liability means ExxonMobil can be named as a defendant for conduct that occurred under Mobil’s ownership. Multiple defendants — manufacturers, the operating company, and predecessor entities — may bear responsibility for alleged worker exposure at this facility. Missouri courts, including the St. Louis City Circuit Court, have historically provided plaintiffs meaningful access to pursue these claims.

Why Refineries Were Built With Asbestos-Containing Materials

Process Conditions Demanded It

Petroleum refining runs at extreme temperatures and pressures. Process piping carries fluids and gases ranging from several hundred to over 1,000°F in certain units. Equipment categories include distillation columns, catalytic crackers, hydrotreaters, cokers, furnaces, boilers, and heat exchangers — each requiring insulation that would not burn, compress, or fail under sustained heat.

Asbestos-containing materials dominated industrial insulation through most of the twentieth century for concrete technical reasons:

• Heat resistance: Chrysotile and amphibole asbestos fibers withstand temperatures that destroy organic insulation materials.
• Non-combustibility: Asbestos does not burn — critical in a facility where hydrocarbons were present throughout.
• Durability: Asbestos-containing products withstood temperature cycling, vibration, and weathering over decades without replacement.
• Formability: Manufactured into pipe covering, block insulation, blankets, rope packing, gaskets, cement, and custom configurations for complex equipment geometry.

The American Petroleum Institute and major engineering firms produced refinery construction and maintenance specifications that routinely called for asbestos-based insulation systems. Asbestos-containing materials were engineered into refineries from initial construction and were disturbed repeatedly through decades of maintenance and modification.

Gaskets and Packing: Exposure With Every Repair

Petroleum refineries contain hundreds to thousands of flanged connections on pipe, valves, pumps, compressors, and process equipment. Each connection historically required asbestos-containing materials to seal:

• Compressed sheet gaskets from Garlock Sealing Technologies, Armstrong World Industries, and other manufacturers.
• Spiral-wound gaskets with asbestos filler.
• Asbestos rope and valve stem packing sold under trade names including Superex and Unibestos.

Breaking a flanged connection meant removing an old gasket by cutting, grinding, or scraping material fused to the flange face — releasing fibers in the process. This was not a one-time event. It happened every time a line was opened, throughout a pipefitter’s entire career.

Refractory Materials in Furnaces and Heaters

High-temperature furnaces and process heaters required refractory lining to protect structural steel from radiant heat. Many refractory products used during the refinery’s construction and operating years reportedly contained asbestos-containing materials. Manufacturers including Crane Co. and Combustion Engineering allegedly supplied asbestos-containing refractory products to petroleum refineries where combined heat and chemical resistance were required.

Timeline of Alleged Asbestos Exposure at the Joliet Refinery

Pre-1970: Unregulated Use

From initial construction through the late 1960s, asbestos-containing materials were reportedly used at this facility without meaningful regulatory oversight:

• Asbestos-containing pipe insulation from Johns-Manville, Owens-Illinois, and other manufacturers was the industry standard for process piping.
• Workers at the facility reportedly handled these materials without respiratory protection.
• Manufacturers knew the hazards of asbestos exposure and did not disclose those risks to workers.
• OSHA did not yet exist; state and federal workplace safety law imposed minimal requirements.
• Workers may have been exposed to airborne fiber levels that industrial hygienists now recognize as profoundly dangerous.

1970–1986: Regulation Began, Exposure Continued

OSHA took effect in 1970 and issued initial asbestos exposure standards — standards later acknowledged by OSHA itself to be insufficient to prevent mesothelioma and asbestosis in long-term workers.

During this period at the Joliet refinery:

• New asbestos-containing insulation installations slowed as alternatives entered the market.
• Decades of previously installed asbestos-containing materials remained in place and were disturbed regularly during maintenance and repair.
• Asbestos-containing gaskets, packing, and certain refractory products continued to be installed.
• Respiratory protection and work practice controls were reportedly inconsistent and often absent.
• Workers faced ongoing exposure from legacy materials already in the facility and from products still being purchased and installed.

1986–Present: Abatement Work and Residual Risk

OSHA tightened asbestos standards in 1986 and again in 1994. EPA activity under the Clean Air Act required facilities to abate existing asbestos-containing materials. Removal work itself, however, disturbs asbestos and releases fibers — and workers involved in abatement operations at the Joliet refinery may have been exposed to asbestos-containing materials during that process, depending on what engineering controls were in place.

Records documenting asbestos-containing material presence and removal at this facility may exist in:

• EPA ECHO (Enforcement and Compliance History Online) database
• Illinois Environmental Protection Agency files
• NESHAP (National Emission Standards for Hazardous Air Pollutants) notifications and abatement records

These records can be subpoenaed or obtained through public records requests during litigation to establish what materials were present, when they were disturbed, and who was in the area.

Trades at Highest Risk: Talk to an Asbestos Cancer Lawyer Now

Insulators — Highest Documented Exposure

Insulators carry the highest asbestos exposure burden of any trade at petroleum refineries, according to occupational health research. Members of Heat and Frost Insulators Local 1 (St. Louis, MO) and other locals regularly performed contract insulation work at major Midwest refining facilities, including Joliet. Work tasks included:

• Cutting asbestos-containing pipe covering to fit complex configurations using knives and saws, generating substantial airborne fiber.
• Mixing and applying asbestos-containing insulation cements by hand and trowel.
• Sawing asbestos-containing block insulation for vessels and equipment.
• Removing deteriorated asbestos-containing insulation from pipe and vessels during repair and replacement.
• Applying asbestos cloth and tape to pipe joints and irregular surfaces.

Insulators at this facility reportedly worked within their own asbestos dust all day, alongside other insulators performing the same tasks simultaneously. Industrial hygiene researchers have documented that fiber concentrations during active insulation work ranked among the highest ever measured in any industrial setting.

Pipefitters and Steamfitters — Chronic Gasket and Packing Exposure

Pipefitters, including members of Plumbers and Pipefitters UA Local 562 (St. Louis, MO), may have been exposed to asbestos-containing materials throughout their working lives at the Joliet refinery. Exposure pathways included:

• Gasket removal: Breaking flanged connections required removing old asbestos-containing gaskets from Garlock Sealing Technologies, Armstrong World Industries, and other manufacturers — often by scraping or grinding material fused to the flange face.
• Gasket installation: Cutting new gaskets from asbestos-containing compressed sheet stock released fibers directly into the air.
• Valve packing replacement: Process valves used asbestos rope packing for stem seals. Replacing that packing meant removing old material and installing new.
• Proximity to insulation work: Insulation was stripped from pipe sections before pipefitters could access them. Pipefitters routinely worked feet away as insulators removed asbestos-containing pipe covering.
• Overhead exposure: Deteriorated overhead pipe insulation dropped fibers into workers’ breathing zones during normal operations.

Gasket disturbance was not limited to major turnarounds. Every time a line was opened for any reason — a leak, a repair, a valve replacement — gasket work followed. Over a career, that meant thousands of individual exposure events.

Boilermakers — Confined Space and Refractory Exposure

Boilermakers at the Joliet refinery, including members of Boilermakers Local 27 (St. Louis, MO), worked on boilers, pressure vessels, heat exchangers, process heaters, and related equipment. Alleged asbestos exposure arose from:

• Entering boilers and furnaces during turnarounds, where asbestos-containing refractory materials allegedly lined walls, floors, and ceilings.
• Removing and replacing asbestos-containing refractory brick, block, and cement in furnace and boiler settings.
• Heat exchanger work, requiring removal of heavily insulated components and gasket replacement on bundle connections.
• Applying and removing asbestos rope and gasket materials at pressure vessel connections.
• Working alongside insulation removal in confined spaces with restricted ventilation.

Confined space conditions made everything worse. Fibers released inside an enclosed vessel or furnace could not dissipate. They remained airborne in the breathing zone for the duration of the work.

Electricians — Secondary Exposure, Real Risk

Electricians at the Mobil Oil Joliet Refinery may have been exposed to asbestos-containing materials through multiple pathways:

• Electrical components: Wire insulation, arc chutes, switchgear, and electrical panel components manufactured before the mid-1980s by Johns-Manville, W.R. Grace, and other suppliers allegedly contained asbestos as an electrical insulator and fire retardant.
• Working adjacent to insulated systems: Electrical work routinely required disturbing insulated pipe or equipment to reach conduit, junction boxes, or instrumentation — placing electricians directly in the fiber-release zone during insulation disturbance.
• Overhead and bystander exposure: Electricians running conduit overhead or working near active insulation removal may have been exposed to asbestos-containing materials without performing any insulation work themselves.

Secondary exposure is legally actionable. Courts have consistently recognized that workers who did not handle asbestos-containing materials directly — but worked in the vicinity of those who did — may have viable claims.

Maintenance Mechanics and Millw

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