By Michael Throneberry, founder of Throneberry Law Group
For generations, Caterpillar was the engine of Peoria’s economy, and its plants across the area used asbestos in the machines they built and the buildings that housed them. The workers who made Caterpillar equipment, and often their families, may carry the health risk decades later.
At Throneberry Law Group, we help Peoria families connect a mesothelioma diagnosis to a specific workplace like Caterpillar. Michael Throneberry founded the firm after losing his father-in-law to mesothelioma, and he brings an engineer’s eye to tracing where and how exposure happened. We work alongside our broader team of Illinois mesothelioma lawyers.
Caterpillar and Asbestos in the Peoria Area
Caterpillar’s plants in Peoria, East Peoria, Mapleton, and Mossville built engines and heavy equipment for much of the twentieth century. Into the early 1980s, that work involved asbestos in gaskets, packing, brakes, and insulation, and the foundries lined their furnaces and ovens with it. Caterpillar has been named in many asbestos lawsuits brought by former workers, and claims continue today.
The scale of the operation is part of the story. The Peoria-area plants employed tens of thousands of people across foundries, machine shops, and assembly lines, so even a job that did not directly handle asbestos often sat within breathing distance of someone who did. Older office and support buildings on these campuses also used asbestos insulation and floor and ceiling tile.
Who Was Exposed at Caterpillar
Asbestos did not stay in one department. It was built into the equipment and the buildings, so the exposure spread across many trades. The workers at highest risk included:
Foundry workers: who poured metal near furnaces lined and insulated with asbestos
Machinists and assemblers: who cut and fitted asbestos gaskets and packing
Pipefitters and insulators: who installed and repaired asbestos insulation on steam and heat lines
Maintenance and building trades: who serviced boilers, ovens, and machinery throughout the plants
Because Caterpillar workers often moved between departments and plants, a single career could involve exposure to many different asbestos products.
Asbestos Products Identified at Caterpillar
The bankruptcy trusts leave no doubt about which asbestos products were installed at Caterpillar’s Peoria-area plants. Owens Corning Kaylo pipe and block insulation, Babcock and Wilcox boilers, W.R. Grace Monokote fireproofing, A.P. Green and Harbison-Walker refractory brick and cement in the foundry furnaces, Halliburton refractory products, and Fibreboard Pabco insulation were all used at the site. Each of these companies set up an asbestos trust, and approving Caterpillar as an exposure site is a direct admission that its product was there, one a company does not make unless the proof is strong.
Asbestos Illnesses and the Latency Problem
Asbestos fiber breathed in on the job can cause mesothelioma, asbestosis, and lung cancer years later. According to federal health agencies, signs of mesothelioma may not appear until 30 to 40 years after exposure. That delay is why many retired Caterpillar workers are diagnosed long after they clock out for the last time, and why acting soon after a diagnosis matters. Early symptoms are easy to mistake for ordinary aging or a lingering cold, so a history of asbestos work is worth raising with a doctor directly.
Legal Options for Caterpillar Workers
Former Caterpillar workers often have more than one path to compensation. A lawsuit can target Caterpillar and the companies that made the asbestos products used in its plants, and many of those product makers set up bankruptcy trusts that still pay claims. Veterans who also served may have separate VA benefits. Because many Caterpillar workers also spent time at other Illinois plants, a full work history can open claims we would otherwise miss. We map out every option based on that history.
How Asbestos Exposure Happened at Caterpillar
Building heavy equipment meant constant heat, friction, and steam, and asbestos was the cheap way to handle all three. It insulated the foundry furnaces and the ovens that cured parts, it sealed engines and machinery as gaskets and packing, and it lined the brakes and clutches on the equipment itself. Every time a worker cut a new gasket, tore out old insulation, or swept up around a furnace, fibers went into the air, usually with no warning and no protective equipment for decades.
Take-Home Exposure to Families
The danger followed workers home. Asbestos fibers clung to coveralls, boots, and hair, and they spread to cars, laundry, and living rooms. Spouses who shook out and washed work clothes, and children who hugged a parent after a shift, could breathe in the same fibers. Illinois law recognizes these secondary exposure claims, and they follow the same process as a worker own case.
What to Do if You Worked at Caterpillar
If Caterpillar was part of your work history, note the plant, the years, the department, and the equipment you handled. Pay stubs, union books, and Social Security earnings records help fill in the gaps. If you have symptoms like a lasting cough, chest pain, or shortness of breath, tell a doctor about your asbestos history. Acting early protects both your health and your legal options, and it costs nothing to have us look into it.
Peoria Asbestos Attorneys at Throneberry Law Group
Caterpillar helped build Peoria, but the asbestos in its plants left many families facing a hard diagnosis. We pair detailed jobsite investigation with the personal commitment of an attorney who understands this loss firsthand.
Our cases run on a contingency fee, we travel to you, and we serve Spanish-speaking families. If you or a family member worked at a Caterpillar plant in the Peoria area, start a free, no-obligation case review through our online contact form.