Joy Global: Asbestos-Containing Mining Equipment and Occupational Exposure History

Company History

Joy Global Inc. is a major American manufacturer of heavy mining equipment, with roots extending back to the early twentieth century through predecessor companies that supplied machinery to the underground coal mining industry. The company’s lineage includes Joy Manufacturing Company, which became one of the most recognized names in mechanized coal mining, producing continuous miners, longwall systems, and related underground equipment that transformed extraction operations across the United States and internationally.

Over the course of several decades, Joy Manufacturing and its successor entities grew through mergers and acquisitions to become Joy Global, a publicly traded company that at various points operated under different corporate names and structures. The company’s equipment was a fixture in coal mines, hard-rock mines, and surface mining operations throughout the mid-twentieth century — precisely the period during which asbestos was widely incorporated into industrial and mining machinery as a heat-resistant and friction-reducing material.

Joy Global was eventually acquired by Komatsu Ltd., the Japanese industrial manufacturer, in 2017, and subsequently rebranded as Komatsu Mining Corp. The legacy of Joy Global’s predecessor companies, however, remains relevant to occupational disease litigation because of the equipment those companies manufactured and sold during the peak decades of industrial asbestos use, roughly from the 1940s through the early 1980s.

Asbestos-Containing Products

According to asbestos litigation records, Joy Manufacturing and related Joy Global predecessor entities produced a range of underground and surface mining equipment that incorporated asbestos-containing components during the mid-twentieth century. Plaintiffs alleged that asbestos materials were present in various forms across multiple product lines, consistent with the widespread industry practice of using asbestos for thermal insulation, gasket sealing, and brake and clutch friction applications in heavy machinery.

Court filings document allegations involving the following categories of mining equipment and components associated with the Joy family of companies:

Continuous Mining Machines Continuous miners — the large, mechanized cutting machines used to extract coal from underground seams — were among Joy Manufacturing’s signature products. Plaintiffs alleged that these machines incorporated asbestos-containing gaskets, packing materials, and insulation around hydraulic systems and drive components that generated significant heat during operation.

Longwall Mining Systems Joy’s longwall equipment, including armored face conveyors and powered roof supports, was deployed in underground coal operations across Appalachia and other mining regions. According to asbestos litigation records, asbestos-containing materials were alleged to be present in associated mechanical and electrical components, including brake assemblies and insulation on drive units.

Shuttle Cars and Haulage Equipment Shuttle cars used to transport cut coal from the mine face to conveyors were also associated with Joy Manufacturing. Court filings document plaintiffs’ allegations that brake linings, clutch facings, and other friction components in these vehicles contained chrysotile or other forms of asbestos during the relevant decades.

Roof Bolters Mechanical roof bolters used to secure mine ceilings were part of the Joy product line during the period in question. Plaintiffs alleged that asbestos-containing components were incorporated into these machines similarly to other powered underground equipment of the era.

Replacement Parts and Maintenance Components Beyond original equipment, plaintiffs alleged that Joy Manufacturing supplied or specified asbestos-containing replacement gaskets, packing, and brake components as part of ongoing maintenance and parts programs for their machinery. Workers who performed routine servicing and repairs on Joy equipment — often in confined, poorly ventilated underground environments — may have been exposed to asbestos fibers released during maintenance tasks.

It is important to note that, in accordance with this site’s Tier 2 designation for Joy Global, the foregoing reflects allegations documented in asbestos litigation records. No court determination of liability has been established as a general finding against Joy Global or its predecessor entities that would constitute settled legal fact for purposes of this reference.

Occupational Exposure

The nature of underground coal mining created conditions in which asbestos exposure could be particularly intense. Mine environments are typically enclosed, with limited ventilation relative to surface industrial settings, and workers in these spaces frequently worked in close proximity to machinery during both operation and maintenance.

Court filings document the accounts of numerous plaintiffs who alleged exposure to asbestos from Joy mining equipment while employed in the following occupations and roles:

  • Underground coal miners who operated continuous miners, shuttle cars, and roof bolters on a daily basis
  • Mine mechanics and maintenance workers who performed brake replacements, gasket changes, and other service tasks on Joy equipment
  • Electricians and equipment installers who worked around drive units and electrical enclosures on Joy longwall systems
  • Surface maintenance personnel who serviced or rebuilt Joy equipment between deployment cycles

According to asbestos litigation records, the period of alleged exposure most frequently cited in court filings spans from the late 1940s through the early 1980s, consistent with the timeline during which asbestos-containing materials were standard components in heavy industrial and mining equipment. Joy Global’s predecessor companies are documented as having transitioned away from asbestos-containing materials in their equipment roughly by the early 1980s, following evolving regulatory guidance and industry practice, though the precise phase-out timeline for individual product lines is not uniformly established in publicly available records.

The diseases most commonly alleged in litigation involving Joy equipment include mesothelioma, asbestosis, and asbestos-related lung cancer — conditions associated with inhalation of asbestos fibers and characterized by long latency periods, often ranging from 20 to 50 years between exposure and diagnosis. This latency profile means that miners and mine workers exposed to asbestos equipment in the 1950s through 1970s may be receiving diagnoses today.

Certain occupational groups may bear a heightened exposure history given the mechanics of their work. Maintenance and repair workers, in particular, are frequently identified in litigation as having faced repeated, high-intensity exposure events during tasks such as brake relining and gasket removal — activities that could release visible asbestos dust in confined underground conditions.

Joy Global occupies a Tier 2 designation on this reference site, meaning the company has been a named defendant in asbestos personal injury litigation but has not established a dedicated asbestos bankruptcy trust fund as of the time of publication. This distinguishes Joy Global from the many asbestos defendants — including major insulation manufacturers and brake lining producers — that resolved their asbestos liabilities through Chapter 11 bankruptcy reorganization and the creation of Section 524(g) trusts.

According to asbestos litigation records, Joy Global and its predecessor entities, including Joy Manufacturing Company, have been named in asbestos personal injury lawsuits filed by former mine workers and their surviving family members. Plaintiffs in these cases have alleged that Joy equipment contained asbestos-bearing components and that the company knew or should have known of the hazards associated with asbestos exposure during the relevant decades.

Court filings document a range of legal theories advanced in these cases, including failure to warn, negligent product design, and breach of implied warranty of merchantability. As with all Tier 2 manufacturers on this site, the existence of litigation does not constitute a judicial determination of liability, and individual case outcomes vary.

Because Joy Global does not operate an asbestos trust fund, claims against the company or its corporate successors — including Komatsu Mining Corp. — would typically be pursued through the civil tort system rather than a trust claims process. The availability of litigation remedies and the identity of the appropriate defendant entity are questions that depend on individual circumstances, corporate successor liability principles, and applicable jurisdictional law.

No asbestos bankruptcy trust fund exists for Joy Global or its predecessor companies. Workers or family members who believe they were exposed to asbestos from Joy mining equipment and who have received a diagnosis of mesothelioma, asbestosis, lung cancer, or another asbestos-related disease should be aware of the following:

  • Civil litigation is the primary legal avenue for claims against Joy Global’s corporate successor, Komatsu Mining Corp., and potentially other parties in the equipment supply chain.
  • Multiple trust fund claims may still be available if a claimant’s exposure history also includes products from other manufacturers that have established Section 524(g) trusts — such as insulation, gasket, or friction material suppliers whose products were present in the same mining environments.
  • Exposure documentation is critical. Records of employment at specific mines, union records, Social Security earnings histories, and co-worker testimony can help establish the presence of Joy equipment and the nature of asbestos-related work tasks.
  • Statute of limitations for asbestos claims varies and generally begins to run from the date of diagnosis or the date a claimant reasonably should have known of the asbestos connection — not the date of original exposure. Prompt consultation with an attorney experienced in asbestos litigation is advisable.

Former coal miners, hard-rock miners, mine mechanics, and their immediate family members who may have been exposed through secondary contact (such as laundering contaminated work clothing) may all have grounds to pursue legal remedies depending on individual circumstances.