U.S. Mineral Products Company manufactured Insulag — a spray-applied asbestos-containing fireproofing and insulation material used to protect structural steel and machinery in industrial and naval applications. Insulag was applied as a wet spray and dried to form a hard, fire-resistant asbestos coating that expanded as it dried — a characteristic that helped the material adhere to irregular surfaces and fill gaps in the insulated structure. U.S. Mineral Products’ Insulag was used throughout naval facility construction and ship construction as a fireproofing material applied to structural steel — one of the most exposure-intensive asbestos application methods, releasing high concentrations of asbestos fiber into the air during application. U.S. Mineral Products’ asbestos liability resulted in a formal asbestos personal injury trust established to compensate victims of Insulag and other U.S. Mineral Products asbestos exposures. Publicly filed asbestos litigation records document U.S. Mineral Products Company: formal documentation that US Mineral Products manufactured and sold asbestos products, Insulag product identification with its characteristic expansion behavior, and US Mineral Products asbestos personal injury trust documentation.

Documented Asbestos — U.S. Mineral Products in Naval Applications

US Mineral Products — Manufactured and Sold Asbestos

Insulag — Asbestos Product Identification

US Mineral Products — Asbestos Personal Injury Trust

Insulag in Naval and Industrial Applications

Sprayed asbestos fireproofing: Insulag was a sprayed-asbestos product — applied to structural steel, machinery, and equipment surfaces by spray applicators. The spray application of Insulag released high concentrations of asbestos fiber into the work environment, exposing both the applicators and workers in surrounding areas during and after application. Naval facility construction used sprayed asbestos fireproofing on structural steel throughout buildings, hangars, and industrial facilities.

Ship construction fireproofing: Insulag was applied to structural steel elements in naval vessel construction — fireproofing the structural members of the hull, superstructure, and machinery spaces. Ship construction workers who applied Insulag or worked in the vicinity of Insulag application were exposed to asbestos fiber released by the spray process.

Expansion and adhesion properties: Insulag’s documented property of expanding as it dried — allowing it to fill gaps and adhere to irregular surfaces — made it effective for complex structural applications. This same expansion property created asbestos fiber release during and after application, as the material dried and contracted around the structures it coated.

Subsequent disturbance: Once applied and dried, Insulag asbestos fireproofing remained in place and could be disturbed by maintenance, renovation, or structural work. Subsequent disturbance of dried Insulag released asbestos fiber from the coating — creating continuing exposure long after the original application.

VA Claims and Legal Options — U.S. Mineral Products / Insulag

Navy veterans who served at naval facilities or aboard vessels where Insulag asbestos fireproofing was applied, workers who applied Insulag during naval facility or ship construction, and workers who disturbed dried Insulag during maintenance or renovation, who subsequently developed mesothelioma, asbestos-related lung cancer, asbestosis, or pleural disease, may qualify for:

  • VA service connection under VA asbestos-claim guidance for veterans with documented duty at naval facilities or aboard vessels where Insulag fireproofing was applied
  • U.S. Mineral Products Asbestos Personal Injury Trust claims for victims of Insulag or other U.S. Mineral Products asbestos exposures meeting the trust’s criteria
  • Civil claims against U.S. Mineral Products successors based on documented Insulag asbestos use in naval and industrial applications

Key documents:

  • DD-214 or service records — documenting duty at naval facilities where sprayed asbestos fireproofing was applied
  • Employment records — construction or insulation contractor work involving Insulag application
  • Diagnosis — mesothelioma, asbestos-related lung cancer, asbestosis, or pleural disease

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Exposure documentation derived from publicly filed asbestos litigation records including formal documentation that U.S. Mineral Products manufactured and sold asbestos products, Insulag product characterization with its documented expansion behavior during drying, U.S. Mineral Products Asbestos Personal Injury Trust formal documentation, and U.S. Mineral Products Company in the asbestos corporation and product liability framework. This does not constitute legal or medical advice.