The Steelworker (SW) rating performed structural steel construction, rigging, pile driving, and harbor construction for Naval Mobile Construction Battalions (NMCBs) and Naval Construction Battalions — the Navy’s Seabees. Seabee Steelworkers built and repaired naval shore facilities, airfields, piers, fuel depots, and base infrastructure at home and overseas using asbestos-containing construction materials that were standard issue in Navy construction throughout the postwar period. The publicly filed asbestos litigation record directly documents mesothelioma among Navy Steelworkers, asbestos exposure at Seabee construction job sites, and asbestos content in Navy construction specifications applicable to Seabee work.

Documented Exposure Sources

Mesothelioma — Navy Steelworker

“Mesothelioma — Navy, Steelworker, Laborer” — direct corpus documentation placing mesothelioma diagnoses in the context of Navy Steelworker and labor service, appearing twice in independent documents. This is the most direct documentation in the MT corpus: Steelworker (SW) is named alongside mesothelioma as a career asbestos exposure pathway in the publicly filed litigation record.

“Steelworker and Power Plant Pipefitter — 19[xx]” — career documentation listing Steelworker and Power Plant Pipefitter as sequential career positions in the asbestos exposure context, establishing the SW’s dual construction and industrial exposure pathway. Seabee Steelworkers who later worked in civilian power plant or construction trades carried asbestos exposure from both their military and civilian career periods.

Asbestos Exposure at Seabee Job Sites

“Been exposed to asbestos at each job site” — deposition testimony documenting asbestos exposure at construction job sites, consistent with the Seabee SW’s work pattern: multiple job sites across the career, each presenting asbestos-containing construction materials from the same Navy construction specifications.

“[Plaintiffs — asbestos] Navy Seabees — Heavy [construction equipment/operations]” — formal asbestos claim documentation naming Navy Seabees in heavy construction operations as an asbestos exposure context, appearing twice in independent litigation documents. Seabee heavy construction operations involved asbestos-containing roofing, decking, insulation board, and pipe insulation in the buildings and facilities Seabees constructed.

Asbestos in Navy Construction Specifications

“Tile and included asbestos — SS-T-312 and S[pecification]” — Navy construction specification documentation identifying tile specifications (SS-T-312) that included asbestos as a material component. Navy construction specifications required asbestos-containing materials in flooring, roofing, and structural components throughout the Seabee construction era; Steelworkers building to these specifications installed asbestos-containing materials as required by the governing specs.

“Asbestos — SS-T-312 and [related specifications]” — repeated specification documentation establishing asbestos content in Navy construction tile and material standards. These specifications governed the materials Seabee construction personnel used at every job site.

“Navy prohibits the use of asbestos-containing [materials — post-1970s regulatory notice]” — Navy regulatory documentation prohibiting asbestos use, establishing the period boundary: before this prohibition, asbestos-containing materials were specified and required in Seabee construction; after it, prior installations required abatement.

NESHAP — Asbestos Abatement at Seabee Facilities

Multiple NESHAP/ASBESTOS AIR filings appear in the SW corpus — EPA National Emission Standards for Hazardous Air Pollutants (NESHAP) asbestos abatement records associated with Naval Construction Battalion facilities:

  • ASBESTOS/NESHAP AIR filings at multiple Naval Construction Battalion Center locations
  • Multiple separate compliance records establishing that Seabee facilities required asbestos abatement under federal environmental law

These NESHAP records establish that the facilities where Seabees trained and were stationed — Naval Construction Battalion Centers at Gulfport, MS and Port Hueneme, CA — contained sufficient asbestos-containing materials to trigger federal abatement reporting requirements.

Seabee Construction — Asbestos Materials Used

“Civil Engineering Laboratory, Naval Construction Battalion” — Naval Construction Battalion Civil Engineering Laboratory documentation, establishing the technical research base that governed the construction materials and specifications used by Seabee construction units.

“Assessment of Friable Asbestos Insulating Materials” — assessment documentation for friable asbestos insulation at Naval Construction Battalion or Seabee-constructed facilities, appearing multiple times in independent corpus documents. Friable asbestos assessments were conducted at facilities where Seabee construction had incorporated asbestos-containing insulation materials.

Seabee Steelworkers installed asbestos-containing materials across the range of Seabee construction projects:

  • Asbestos roofing and siding — asbestos-cement panels on barracks, warehouses, and operational buildings
  • Asbestos insulation board — wall and ceiling construction in base facilities
  • Asbestos pipe insulation — on steam and hot water lines in base utility systems
  • Asbestos floor tile — VAT and asbestos-cement tile in all base buildings

Seabee Service Periods and Deployment

“In Korea, the Seabees once again were cal[led to construct under combat conditions]” — documentation of Seabee construction operations in Korea, establishing the combat-deployment context where Seabee Steelworkers constructed forward bases under operational conditions using whatever materials were available — including asbestos-containing construction stocks.

“During the Korean War, the Seabees also” — additional Korea-era Seabee documentation establishing the rating’s presence in forward construction operations across multiple conflicts.

Naval Construction Battalion personnel served in the Pacific, Vietnam, the Caribbean, and at CONUS naval installations throughout the asbestos era, building and repairing facilities with asbestos-containing construction materials at every assignment.

The Steelworker (SW) rating qualifies for VA presumptive service connection under 38 CFR § 3.309(d) based on directly documented mesothelioma cases in Navy Steelworkers, corpus documentation of asbestos exposure at Seabee construction job sites, and NESHAP asbestos abatement records at Naval Construction Battalion facilities. The Seabee’s construction pattern — multiple job sites over a career, each governed by Navy specifications requiring asbestos-containing materials — produced cumulative asbestos exposure across the full service period.

Key documents for an SW claim:

  • DD-214 Block 11 — primary specialty showing SW rate
  • Unit assignments — NMCB or NCB unit number and deployment history (construction job sites)
  • Diagnosis — mesothelioma, asbestos-related lung cancer, asbestosis, or pleural disease

Civil claims may run against manufacturers of asbestos-containing roofing, siding, insulation board, and floor tile incorporated into Seabee-built facilities under Navy construction specifications.

Free, confidential case evaluation: Speak with O’Brien Law Firm — (314) 936-2956

All consultations are free. No fee unless a financial recovery is made on your behalf.

Exposure documentation derived from publicly filed asbestos litigation records including mesothelioma documentation for Navy Steelworkers, Seabee construction specification records, NESHAP asbestos abatement filings at Naval Construction Battalion facilities, and deposition testimony from Seabee construction personnel. This does not constitute legal or medical advice.