P&H Mining Equipment and Asbestos Exposure

Company History

P&H Mining Equipment is an American manufacturer with a long history of producing heavy industrial machinery for the mining and construction industries. The company is most widely recognized for its large-scale electric mining shovels, blasthole drills, and related equipment — machinery designed to operate under extreme conditions in surface and open-pit mining environments across the United States and internationally.

Throughout much of the twentieth century, P&H equipment became a fixture on major mining sites, including coal mines, copper mines, iron ore operations, and other large-scale extraction facilities. The company’s machines were engineered for durability and high-cycle performance, and they were routinely maintained by on-site mechanics, electricians, and equipment operators over decades of service life.

Like many heavy equipment manufacturers of the postwar era, P&H incorporated materials that were standard industrial practice at the time — including asbestos-containing components — into equipment that remained in use on American jobsites well into the 1980s and beyond. According to asbestos litigation records, workers who operated, maintained, and repaired P&H equipment were potentially exposed to asbestos-containing materials integrated into the machinery itself, as well as asbestos-containing replacement parts and insulation products used during servicing.

P&H Mining Equipment is currently part of Komatsu Mining Corp., following a series of corporate acquisitions over the years. The company’s earlier corporate structure and its relationship to successor entities has been a point of examination in various asbestos exposure claims.

Asbestos-Containing Products

P&H Mining Equipment manufactured and supplied large-scale industrial machinery in which asbestos-containing materials were commonly incorporated, either by the company directly or through the use of third-party components and aftermarket parts that were specified or supplied for use in P&H equipment.

According to asbestos litigation records, plaintiffs alleged that asbestos-containing materials were present in and around P&H equipment in several forms, including:

Electrical Insulation P&H was primarily known for electrically powered mining shovels and drills. Large electric motors, switchgear, control panels, and wiring systems on this equipment were frequently insulated with asbestos-containing materials during the period when such insulation was considered standard in high-heat electrical applications. Court filings document allegations that workers performing electrical maintenance on P&H machinery encountered asbestos-containing arc chutes, gaskets, and insulating boards within electrical enclosures.

Brake Linings and Clutch Components Mining shovels and drills are subject to repeated high-stress braking and clutch cycles during operation. Plaintiffs alleged that brake shoes, brake linings, and friction materials used in P&H equipment during the mid-twentieth century contained asbestos, as was common across the heavy equipment industry. Routine replacement of these components — a standard maintenance task — was alleged to generate respirable asbestos dust.

Gaskets and Sealing Materials According to asbestos litigation records, compressed asbestos gaskets were commonly used throughout the hydraulic, pneumatic, and mechanical systems of P&H machinery during the relevant period. Workers removing and replacing gaskets during equipment overhauls were alleged to have been exposed to asbestos fibers released during scraping and surface preparation.

Thermal and Heat Insulation Large-scale mining equipment operating in demanding environments generated significant heat in engine compartments, exhaust systems, and other areas. Court filings document allegations that asbestos-containing thermal insulation was applied to these areas and that workers performing maintenance in confined equipment spaces disturbed this insulation in the course of routine repairs.

Replacement Parts and Maintenance Supplies Plaintiffs alleged that asbestos-containing replacement parts and maintenance materials — including packing materials, rope gaskets, and insulating cements — were supplied or specified for use in P&H equipment and were available through P&H parts channels during the period prior to the company’s cessation of asbestos use in the early 1980s.

It is important to note that because P&H equipment had extended service lives — often remaining in active use for twenty or more years — workers may have been exposed to these materials well after the date of original manufacture.

Occupational Exposure

The workers most commonly identified in asbestos exposure claims involving P&H Mining Equipment are those who performed hands-on maintenance, repair, and overhaul work on large mining machinery. According to asbestos litigation records, occupational groups with documented exposure histories linked to P&H equipment include:

Mine Machinery Mechanics and Millwrights These workers performed routine and major maintenance on P&H shovels and drills, including brake replacement, electrical work, and full machine overhauls. Plaintiffs alleged that this work routinely involved disturbing asbestos-containing components in enclosed or semi-enclosed spaces where fiber levels could accumulate.

Electricians Given the electrically driven design of P&H’s flagship equipment, electricians were regularly involved in maintenance and repair. Court filings document allegations that electricians working on P&H control systems, motors, and wiring encountered asbestos-containing insulation materials during normal job duties.

Equipment Operators Operators of P&H mining shovels and blasthole drills spent extended hours in operator cabs positioned on or near equipment housings. Plaintiffs alleged that deteriorating asbestos-containing materials within the machine body, combined with vibration and heat, could release fibers into the cab environment over time.

Lube and Service Technicians Workers responsible for routine lubrication and inspection of P&H machinery alleged exposure during access to mechanical compartments where asbestos-containing gaskets and insulation were present.

Mining Site Supervisors and Oilers Individuals in proximity to P&H equipment during maintenance activities — even those not performing the work directly — were identified in litigation as potentially having experienced bystander exposure.

The mining industry context compounds these exposure concerns. Open-pit and underground mine environments were frequently dusty, and workers often lacked adequate respiratory protection through much of the period in question. Asbestos fibers, if present, would have mixed with other particulate matter in these environments, making source identification more complex but not diminishing the significance of the potential exposure.

According to asbestos litigation records, mesothelioma, asbestos-related lung cancer, and asbestosis have been alleged by workers and their families in connection with occupational exposure to P&H equipment and its components.

P&H Mining Equipment has been named as a defendant in asbestos personal injury litigation. P&H Mining Equipment does not have an established asbestos bankruptcy trust fund. The company has not undergone an asbestos-driven bankruptcy reorganization, and accordingly there is no trust fund mechanism through which claimants may file administrative claims against P&H directly.

According to asbestos litigation records, plaintiffs have pursued claims against P&H and its corporate successors through civil litigation in state and federal courts. Court filings document allegations that P&H knew or should have known of the hazards associated with asbestos-containing materials incorporated into its equipment, and that the company failed to adequately warn workers of those hazards.

Because no trust has been established, individuals asserting asbestos-related injuries connected to P&H equipment must pursue those claims through the civil court system rather than through an administrative trust claims process. Claims may be filed against P&H’s current corporate successor, Komatsu Mining Corp., depending on the facts of each individual case and the applicable corporate liability relationships.

It is also common in asbestos litigation for claimants with P&H exposure to simultaneously pursue claims against other defendants — including manufacturers of the specific asbestos-containing component parts (gaskets, brake linings, insulation products) that were incorporated into or used in conjunction with P&H equipment. Many of those component manufacturers do have established asbestos trust funds, which can provide additional avenues for compensation.

If you or a family member worked with or around P&H Mining Equipment and has been diagnosed with mesothelioma, asbestos-related lung cancer, asbestosis, or another asbestos-related disease, the following general information may be relevant to your situation:

  • P&H Mining Equipment does not have an asbestos bankruptcy trust fund. Claims involving P&H exposure are pursued through civil litigation, not through a trust claims process.
  • Civil litigation against P&H’s corporate successor may be available depending on the facts of your case, the nature of the exposure, and applicable legal standards.
  • Companion trust fund claims may be available against manufacturers of specific asbestos-containing components — such as gaskets, brake linings, or insulation products — used in P&H machinery. Many such manufacturers have established trusts with defined claim procedures.
  • Occupational and medical documentation is important in all asbestos claims. Records of employment at mining sites, equipment maintenance logs, and medical records establishing diagnosis and causation are central to building a claim.
  • Asbestos claims are subject to statutes of limitations that vary by state and by claim type; the clock typically begins running at the time of diagnosis, not the time of exposure.

An attorney experienced in asbestos personal injury litigation can evaluate the specific facts of your exposure history and diagnosis and advise on the most appropriate legal strategy, including which defendants and trust funds may be relevant to your situation.