A 1985 Study of 7,971 Pearl Harbor Shipyard Workers Found Mesothelioma at 11 Times the Local Rate. The Prior Version Cited a Swedish Yard Instead.

There is a real, primary, US Navy shipyard mesothelioma cohort. The previous version of this report did not cite it. It cited a shipyard in Sweden instead, and called the result a Navy cohort built from FOIA records it never obtained.

The verified study is Kolonel, Yoshizawa, Hirohata and Myers, published in Cancer Research in 1985 (PMID 4016758). It examined 7,971 male Pearl Harbor Naval Shipyard workers and found mesothelioma occurring at roughly 67 per million per year, against 5.8 per million statewide in Hawaii. That is about an eleven-fold elevation, in an actual US Navy shipyard workforce, in the peer-reviewed primary literature, and it was absent from the article that claimed to be about exactly this.

That omission, and the substitutions made in its place, are the reason this rewrite exists.

The Cohort That Exists

The Pearl Harbor study is the spine this report should always have had. Kolonel et al. followed 7,971 male shipyard workers and identified 7 mesothelioma cases in the 1977 to 1982 window in the resident subset, the roughly 67 per million per year figure, against a Hawaii baseline of 5.8. Lung-cancer relative risk rose with both exposure duration and latency in the same workforce.

It is one yard and one era, not a national Navy number, and this report says so plainly rather than inflating it. But it is a real US Navy shipyard cohort with an eleven-fold mesothelioma signal, which is a stronger and more honest anchor than anything in the prior version.

Two further primary studies corroborate the Navy-yard picture. A Portsmouth Naval Shipyard civilian lung-cancer case-control study (Rinsky et al., American Journal of Epidemiology, 1988, PMID 3337077) and a large pooled nuclear-worker cohort that includes Portsmouth Naval Shipyard (Schubauer-Berigan et al., Radiation Research, 2015, PMID 26010709) both show elevated pleural cancer in this workforce.

The Two Studies That Were Mislabeled

The prior version’s headline cohorts were real studies attached to the wrong flag. Sanden, Jarvholm, Larsson and Thiringer (European Respiratory Journal, 1992, PMID 1572439) is a cohort of 3,893 shipyard workers in Gothenburg, Sweden. Civilian. Not US Navy. Krstev, Stewart, Rusiecki and Blair (Occupational and Environmental Medicine, 2007, PMID 17881470) is 4,702 US Coast Guard civilian workers at Curtis Bay in Baltimore. Coast Guard. Not Navy.

Their numbers are accurate and worth keeping, correctly labeled, as corroborating civilian-shipyard evidence:

Sanden found 11 observed pleural mesothelioma cases against 1.5 expected. Krstev found a mesothelioma standardized mortality ratio of 5.07 overall, rising to 6.27 for workers with ten or more years of employment, with 93.3% of the cohort traced.

Keeping these studies is correct. Calling them the Navy cohort was not.

The FOIA Premise Was Empty

The prior version’s title promised a record set it never had. “Navy Shipyard FOIA Cohort” implies obtained Freedom of Information Act records. The article contained no request number, no agency, no response date, and no released production. It described, in a FAQ, a hypothetical FOIA process a claimant could pursue, and then titled the whole investigation as though that process had been completed.

There is no public FOIA or agency dataset anchoring a Navy-shipyard asbestos worker cohort. The honest statement is that the cohort evidence is the published epidemiology above, and that FOIA is a route a veteran’s attorney can pursue for yard-specific abatement and employment records, not a thing this report holds. This version removes the FOIA framing from the title, the eyebrow, and the body, and states the absence directly.

The VA Correction

The prior version repeated the same false claim this investigation set has corrected elsewhere: that mesothelioma is a VA presumptive condition. It is not. Mesothelioma is not on the 38 CFR 3.309 presumptive lists, and the PACT Act of 2022 (Public Law 117-168) did not add it.

Asbestos-related mesothelioma in veterans is adjudicated as direct service connection under 38 CFR 3.303, developed under the VA Adjudication Manual M21-1 asbestos guidance: documented in-service exposure consistent with the veteran’s duties, a current diagnosis, and a medical nexus opinion. For Navy shipyard and shipboard ratings the documented pre-1980 asbestos use makes the exposure element well supported, but it remains a direct-service-connection claim, not an automatic presumption. Once service connection is granted, mesothelioma is rated 100% under 38 CFR 4.97, Diagnostic Code 6819, and a surviving spouse may qualify for Dependency and Indemnity Compensation where the death is service-connected.

The distinction is not pedantic. Telling a Navy veteran the claim is presumptive when it requires a documented exposure-and-nexus showing sets a false expectation about the evidence they need, which is exactly why this correction is being made consistently across the set.

A Closing Thesis

The strongest thing this report can say about Navy shipyard mesothelioma is also the truest, and it was sitting in the primary literature the whole time. Kolonel 1985: 7,971 Pearl Harbor workers, mesothelioma at roughly eleven times the local rate, corroborated at Portsmouth and by correctly-labeled civilian shipyard cohorts in Sweden and the Coast Guard.

There is no FOIA dataset, and this version says so instead of implying one. There is no published VA one-third figure, and this version drops it instead of asserting it. Mesothelioma is not a VA presumptive, and this version states the real 38 CFR 3.303 pathway instead of the comfortable wrong one. The Texas military base and Galveston shipyard belt investigations apply the same discipline: name the verified primary source, state the gap as a gap, and never let the title promise a record the body does not contain.