Narmag OH Gun Mix

Product Description

Narmag OH Gun Mix was a refractory castable material manufactured by Keene Corporation, a diversified industrial conglomerate that operated across multiple construction and materials sectors throughout much of the twentieth century. The product was designed for use in high-temperature industrial applications, where it could be applied by gunning — a pneumatic spray process — to line, repair, or protect furnaces, kilns, boilers, and other heat-intensive equipment.

Gun-mix refractories of this type were engineered to withstand extreme thermal cycling and direct flame exposure, making them a staple product in heavy industry settings including steel mills, foundries, petrochemical refineries, power generation facilities, and manufacturing plants. The gunning method of application allowed workers to coat interior surfaces of industrial vessels with a relatively thick, uniform layer of refractory material without requiring the labor-intensive forming and curing associated with cast-in-place alternatives.

Keene Corporation marketed refractory and specialty construction materials under various product lines during its active years, and Narmag OH Gun Mix represented one entry in that broader portfolio of industrial products. Based on available litigation records, the product appears to have been used during periods of peak industrial construction and maintenance activity in the United States, when demand for heat-resistant lining materials was at its highest.

The multiple categories associated with Narmag OH Gun Mix — including refractory, spray fireproofing, pipe insulation, floor tile, and valves and steam traps — reflect both the product’s own applications and the broader industrial environments in which it was encountered. Workers who applied or worked near this material frequently shared workspaces with numerous other asbestos-containing products, compounding their potential exposure.

Asbestos Content

Litigation records document that Narmag OH Gun Mix contained asbestos as a component of its formulation. Asbestos was a widely used additive in refractory and gunning mix products during this era because of its heat resistance, tensile strength, and ability to bind other materials together under extreme temperatures. Chrysotile, amosite, and other asbestos fiber types were incorporated into similar products across the refractory industry during much of the twentieth century.

Plaintiffs alleged that Keene Corporation was aware, or should have been aware, that the asbestos content of products such as Narmag OH Gun Mix posed a significant health hazard to workers who applied, handled, or worked in proximity to the material. Asbestos-containing refractory gunning mixes were recognized by occupational health researchers as particularly hazardous because the pneumatic application process generated substantial quantities of airborne respirable dust, much of which contained asbestos fibers.

Asbestos fibers in the respirable size range — those small enough to be inhaled deeply into the lungs — are not visible to the naked eye and produce no immediate sensory warning. Workers applying or disturbing gun-mix refractories had no reliable means of recognizing the hazard without proper industrial hygiene monitoring, hazard communication, and protective equipment. Litigation records indicate that such protections were frequently absent in the industrial workplaces where products like Narmag OH Gun Mix were used.

How Workers Were Exposed

Industrial workers represent the primary population documented in litigation involving Narmag OH Gun Mix. Exposure scenarios varied depending on the worker’s specific role, but several pathways have been identified in litigation records.

Application workers who operated pneumatic gunning equipment were directly in the path of the spray output and the resulting dust cloud. Gunning operations in enclosed or partially enclosed furnace interiors concentrated airborne fibers significantly, particularly when ventilation was limited or absent.

Maintenance and repair tradespeople — including boilermakers, millwrights, pipefitters, and ironworkers — frequently encountered refractory gun mix during demolition or repair of lined equipment. Removing or chipping away deteriorated or damaged refractory lining releases previously bound asbestos fibers into the air, often generating dust levels comparable to or exceeding those during initial application.

Nearby workers who were not directly involved in gunning or refractory work were nonetheless exposed through the general industrial atmosphere. In busy industrial facilities, multiple trades often worked in proximity, and asbestos fibers released by one operation could migrate throughout a work area, settling on surfaces, clothing, and equipment before being resuspended by subsequent activity.

Secondary or bystander exposures are also documented in litigation records involving refractory products. Workers who transported, stored, or handled bags of dry gun mix prior to mixing and application could encounter dusty conditions during bag opening and material handling.

The diseases associated with occupational asbestos exposure documented in litigation involving products like Narmag OH Gun Mix include mesothelioma, asbestos-related lung cancer, asbestosis, and other pleural diseases. These conditions typically carry latency periods of ten to fifty years between initial exposure and clinical diagnosis, meaning that workers exposed during the height of industrial activity in the mid-twentieth century have continued to receive diagnoses in recent decades.

Narmag OH Gun Mix falls into the Tier 2 litigation category, meaning that claims involving this product are pursued through the civil court system rather than through an established asbestos bankruptcy trust fund. Keene Corporation faced substantial asbestos litigation during the latter decades of the twentieth century, and litigation records document numerous claims alleging injury from Keene-manufactured asbestos-containing products.

Civil Litigation

Individuals diagnosed with mesothelioma, lung cancer, asbestosis, or other asbestos-related diseases who have a documented history of exposure to Narmag OH Gun Mix may have grounds to pursue a civil lawsuit against responsible parties. Plaintiffs alleged in prior cases that Keene Corporation and other defendants in the asbestos industry failed to adequately warn workers about the dangers of asbestos exposure and failed to provide safe products or safe working conditions.

Civil litigation can pursue compensation for medical expenses, lost wages, pain and suffering, and, where applicable, wrongful death damages. Cases may be filed in state or federal court depending on jurisdiction, applicable statutes of limitations, and other legal factors specific to the claimant’s situation.

Additional Defendant Claims

Because asbestos-exposed industrial workers typically encountered many asbestos-containing products in the course of their careers, claims related to Narmag OH Gun Mix exposure often arise alongside claims against other manufacturers and distributors of asbestos products. Legal counsel experienced in asbestos litigation can evaluate the full exposure history of an affected worker to identify all potentially responsible parties.

Practical Steps

Workers or surviving family members who believe they have been exposed to Narmag OH Gun Mix should gather employment records, medical records, and any documentation of job sites and work tasks. Consulting with an attorney who specializes in asbestos litigation is the most reliable way to evaluate legal options, determine applicable deadlines, and pursue appropriate remedies.

Given the long latency period of asbestos-related disease, individuals with historical exposure to refractory products in industrial settings should discuss screening and monitoring options with a qualified physician even in the absence of current symptoms.