Cafco Blaze-Shield Type M

Product Description

Cafco Blaze-Shield Type M was a spray-applied fireproofing material manufactured by United States Mineral Products Company, commonly known as U.S. Mineral. Produced during a brief window between 1964 and 1965, Blaze-Shield Type M was part of U.S. Mineral’s broader Cafco line of construction fireproofing products, a family of materials that became widely used in commercial, industrial, and institutional building projects throughout the mid-twentieth century.

Spray-applied fireproofing materials like Blaze-Shield Type M were developed to meet growing fire safety requirements for structural steel. When applied directly to steel beams, columns, and decking, these products created a thermally insulating layer designed to slow the transfer of heat during a fire, helping to preserve structural integrity long enough for building occupants to evacuate. The spray-application method made these products attractive to contractors because they could be deployed quickly across large surface areas, making them a practical solution for high-rise construction, industrial facilities, warehouses, and manufacturing plants.

U.S. Mineral Products marketed the Cafco Blaze-Shield line aggressively during the 1960s, a period of rapid expansion in commercial construction across the United States. Type M represented one configuration within this product line, formulated to meet the performance specifications demanded by industrial and commercial building projects of the era. Although its production span was relatively short — limited to 1964 and 1965 — the product was applied to structural components in buildings that remained in service for decades afterward, meaning that occupational exposures associated with the material extended well beyond its years of manufacture.

Asbestos Content

Cafco Blaze-Shield Type M contained chrysotile asbestos as a primary component of its formulation. Chrysotile, sometimes referred to as “white asbestos,” is a serpentine-form mineral fiber that was the most extensively used variety of asbestos in commercial manufacturing throughout the twentieth century. In spray-applied fireproofing products, chrysotile fibers functioned as a key structural and thermal element — the fibrous matrix of the cured product gave it both mechanical cohesion and the insulating properties necessary for fire resistance performance.

In spray fireproofing applications, asbestos content was typically a significant proportion of the product by weight, as the fiber network was integral to the material’s function. When mixed with binders and applied wet to structural surfaces, the asbestos-laden slurry hardened into a porous, lightweight coating. While this coating performed its intended fireproofing function adequately during its service life, the asbestos fibers within it remained a persistent hazard whenever the material was disturbed, damaged, or removed.

Chrysotile asbestos is classified as a known human carcinogen by the International Agency for Research on Cancer (IARC) and is regulated under the Occupational Safety and Health Administration (OSHA) asbestos standards codified at 29 CFR 1910.1001 and 29 CFR 1926.1101. The Environmental Protection Agency’s Asbestos Hazard Emergency Response Act (AHERA) regulations also govern the identification and management of asbestos-containing materials in buildings, including spray-applied fireproofing products of this type.

How Workers Were Exposed

Industrial workers represent the primary trade group documented in connection with occupational exposure to Cafco Blaze-Shield Type M. Exposure pathways associated with spray-applied asbestos fireproofing were numerous and often severe, particularly given the limited understanding of asbestos hazards and the absence of meaningful respiratory protection standards during the 1960s.

Workers involved in the original application of Blaze-Shield Type M faced direct exposure during the spraying process itself. Spray-applied asbestos fireproofing was notorious for generating high concentrations of airborne asbestos fibers during application. As the wet slurry was projected at high pressure onto structural steel, fine asbestos fibers became aerosolized and dispersed throughout the work area. Workers operating spray equipment were exposed at the point of application, but so were other tradespeople — ironworkers, electricians, pipefitters, and general laborers — who shared the same workspaces during construction.

Overspray was a recognized feature of this work. Asbestos-laden material settled on surfaces throughout construction areas, and dry overspray could subsequently become airborne again through foot traffic, vibration, or incidental disturbance. Workers who entered spray zones after application was complete could inhale fibers that had settled but not fully cured.

Beyond original installation, industrial workers employed in facilities where Blaze-Shield Type M had been applied faced ongoing exposure risks across the decades following construction. Maintenance activities, repair work, and renovation projects routinely disturbed fireproofing material on overhead beams and structural elements. In industrial settings, where mechanical wear, vibration, and physical contact with structural components were common, the degradation of spray-applied fireproofing was an ongoing process. Workers performing tasks in proximity to deteriorating fireproofing — even without directly handling the material — could inhale fibers released as the coating crumbled or flaked.

Demolition and abatement work conducted during building renovation or decommissioning generated particularly intense fiber releases. Workers involved in removing spray-applied asbestos fireproofing, whether or not they were aware of the material’s composition, faced acute high-level exposures.

No dedicated asbestos bankruptcy trust fund has been established specifically for claims arising from Cafco Blaze-Shield Type M manufactured by United States Mineral Products Company. Injured parties and their families have therefore pursued compensation primarily through civil litigation in state and federal courts.

Litigation records document claims brought by industrial workers and others alleging occupational exposure to asbestos-containing Cafco Blaze-Shield products, including Type M. Plaintiffs alleged that U.S. Mineral Products knew or should have known about the hazards associated with airborne asbestos fiber exposure during the product’s manufacture, sale, and application, and that the company failed to adequately warn workers of those risks.

Plaintiffs alleged that the absence of adequate hazard warnings on product packaging, safety data documentation, and product literature left workers and their employers without the information necessary to implement protective measures. Litigation records document claims asserting that this failure to warn directly contributed to the development of asbestos-related diseases, including mesothelioma, asbestosis, and lung cancer, among individuals exposed during installation, routine industrial work, maintenance, and demolition activities.

Individuals who believe they were exposed to Cafco Blaze-Shield Type M or other asbestos-containing products manufactured or marketed by U.S. Mineral Products should consult an attorney experienced in asbestos litigation. Because statutes of limitations for asbestos-related disease claims vary by state and are generally measured from the date of diagnosis rather than the date of exposure, timely legal consultation is important. An experienced asbestos attorney can evaluate exposure history, identify all potentially responsible parties — which may include manufacturers, distributors, contractors, and premises owners — and determine the most appropriate legal strategy for pursuing compensation.

Individuals diagnosed with mesothelioma, asbestosis, lung cancer, or other asbestos-related conditions following documented exposure to asbestos-containing spray fireproofing products may be entitled to compensation for medical expenses, lost income, and other damages through civil litigation.