BOF Patch by Keene Corporation

Product Description

BOF Patch was an industrial patching and repair compound manufactured by Keene Corporation, a diversified manufacturing conglomerate that operated across multiple product lines throughout the mid-twentieth century. The product name reflects its intended application environment: the basic oxygen furnace (BOF), a high-temperature steelmaking vessel that requires robust refractory and patching materials capable of withstanding extreme thermal and mechanical stress.

Basic oxygen furnaces operate at temperatures exceeding 2,900 degrees Fahrenheit during the steel conversion process. Maintaining the integrity of furnace linings, seals, and surrounding infrastructure demanded specialized materials that could resist heat, chemical attack, and physical degradation over repeated production cycles. BOF Patch was formulated to address these maintenance demands, providing workers and facilities with a compound intended for application to refractory surfaces, joints, and damaged areas in and around steelmaking equipment.

Keene Corporation, headquartered in New York, built a broad industrial products portfolio through acquisition and internal development. The company’s product lines spanned acoustical ceiling tiles, pipe insulation, floor tiles, refractory products, spray fireproofing materials, and valve and steam trap components—categories that collectively placed Keene’s products in close proximity to industrial workers across foundries, power plants, shipyards, and heavy manufacturing facilities. BOF Patch represented one element of this industrial product portfolio, targeting steelmaking and high-temperature industrial maintenance applications.

The precise years of BOF Patch production are not fully documented in publicly available records. However, Keene Corporation’s industrial product activity is broadly associated with mid-century industrial expansion through the 1970s and into periods when asbestos use in high-temperature applications remained common practice before regulatory intervention.

Asbestos Content

Litigation records document that BOF Patch, like many refractory and patching compounds produced during this era, was alleged by plaintiffs to have contained asbestos as a functional component of its formulation. Asbestos was widely incorporated into high-temperature patching compounds because of its thermal resistance, binding properties, and ability to maintain structural integrity under the conditions present in steelmaking environments.

Plaintiffs alleged that Keene Corporation knowingly included asbestos-containing materials in BOF Patch and related industrial products, and that the company was aware of the hazards associated with asbestos exposure during the relevant production and use periods. Litigation records further document claims that Keene failed to adequately warn workers, contractors, and end users about the risks of asbestos-containing materials in its product lines.

The specific fiber type and percentage of asbestos content in BOF Patch formulations have been subjects of legal and technical dispute in asbestos litigation proceedings. Asbestos-containing refractory compounds of this type typically incorporated chrysotile, amosite, or a combination of fiber types selected for their thermal and mechanical performance characteristics. The exact formulation of BOF Patch across different production batches or years is not uniformly documented in publicly available records.

Keene Corporation’s broader product portfolio has been extensively documented in asbestos litigation, with the company named as a defendant across thousands of cases involving its various product lines. BOF Patch appears within this broader litigation context as one of multiple Keene products alleged to have exposed workers to hazardous asbestos fibers.

How Workers Were Exposed

Industrial workers in steelmaking and heavy manufacturing environments were the primary population with documented exposure to BOF Patch. The nature of the product’s intended application created multiple pathways through which airborne asbestos fibers could be released and inhaled.

Application and mixing: Workers responsible for applying BOF Patch to furnace surfaces, joints, or damaged refractory areas would have handled the dry compound directly. Mixing dry refractory patching materials generates significant airborne dust, and in enclosed or poorly ventilated steelmaking environments, this dust could remain suspended for extended periods.

Surface preparation: Before applying patching compounds, workers typically ground, chipped, or scraped damaged refractory surfaces. This surface preparation work on existing asbestos-containing refractory materials compounded potential fiber release, exposing not only the workers performing the task but others working in proximity.

Furnace maintenance and repair cycles: Basic oxygen furnaces require periodic relining, patching, and inspection. Maintenance crews working during furnace downtime entered environments where refractory materials—including BOF Patch—had been subjected to extreme thermal stress, which can degrade asbestos-containing compounds and make them more friable and prone to releasing fibers.

Bystander exposure: Steelworkers, supervisors, engineers, and other trades personnel present in BOF areas during maintenance operations could be exposed to airborne fibers without directly handling the patching compound. Litigation records document that bystander exposure in industrial settings was a significant pathway for asbestos-related disease among workers who did not directly apply the product.

Plaintiffs in asbestos litigation involving BOF Patch and similar Keene products have included steelworkers, furnace maintenance workers, refractory installation and repair crews, and general industrial laborers employed at facilities where the product was used. Mesothelioma, asbestosis, and asbestos-related lung cancer have been among the diagnoses documented in litigation involving Keene Corporation’s industrial products.

Documented Trust Fund / Legal Options

Keene Corporation filed for bankruptcy protection in 1996, with asbestos liability being a primary driver of the company’s financial restructuring. As a result of that bankruptcy proceeding, the Keene Creditors Trust was established to administer asbestos-related claims against the former company.

Because BOF Patch falls within the category of Tier 2 — Litigated Products, individuals seeking compensation should be aware of the following:

Litigation framing: Claims involving BOF Patch are supported by litigation records documenting plaintiffs’ allegations regarding asbestos content and worker exposure. Legal counsel experienced in asbestos litigation can evaluate whether available records, product identification documentation, and employment history support a viable claim.

Keene Creditors Trust: Individuals diagnosed with asbestos-related diseases who can document exposure to Keene Corporation products—including BOF Patch—should consult with an asbestos attorney to evaluate eligibility for a trust claim. The trust was established specifically to compensate individuals harmed by Keene’s asbestos-containing products, and claim categories typically include mesothelioma, lung cancer, asbestosis, and other asbestos-related conditions.

Exposure documentation: Successful claims generally require documentation linking the claimant to a specific product and work site. Employment records, union records, co-worker affidavits, and facility maintenance logs have all been used in litigation to establish product-specific exposure to Keene BOF Patch and related compounds.

Statute of limitations: Asbestos-related disease claims are subject to statutes of limitations that vary by state. Given that asbestos-related diseases often have latency periods of twenty years or more, individuals recently diagnosed should consult legal counsel promptly to preserve their legal rights.

Workers and their families who believe they may have been exposed to BOF Patch or other Keene Corporation industrial products should contact an attorney specializing in asbestos litigation to evaluate all available legal remedies, including trust fund claims, workers’ compensation, and civil litigation where applicable.