Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
-
[1]research packet 700-packet.md (3 sources cited) [museum_official]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-lst-620-lst620-pkt-700-packet-md
-
[2]DANFS, LST-620 (live NHHC page verified 2026-10-02) [nhhc_danfs]
- Locator
- DANFS LST-620 entry - full entry text
- Finding type
- vessel_history
- Finding
- DANFS record for this hull: laid down 11 March 1944 at Seneca, Ill., by the Chicago Bridge & Iron Co.; launched 30 May 1944, sponsored by Mrs. V. A. Carpano; commissioned 17 June 1944. During World War II assigned to the Asiatic-Pacific theater and participated in the assault and occupation of Okinawa Gunto in May and June 1945. Following the war she performed occupation duty in the Far East and saw service in China until early May 1946. Decommissioned 7 June 1946; struck from the Navy list 19 June 1946. Earned one battle star for World War II service.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-02
- Study period
- 1944-1946
- Population
- Construction trades, Chicago Bridge & Iron Seneca (1944); ship's company and embarked troops (1944-46)
- Limitations
- Ship-history narrative only - no asbestos, insulation, or material content. Does not state where the ship decommissioned or her post-strike disposition; makes no mention of the Europe-Africa-Middle East assignment that NavSource records.
- Atlas source
- true
- Evidence ID
- ev-uss-lst-620-lst620-01
-
[3]Bureau of Ships, Ships' Data, U.S. Naval Vessels, Vol. 2 (Jan 1945), LST roster (shipscribe.com scan, verified live at new /pubs/ path) [other_primary]
- Locator
- SDB1945v2, LST roster, row 'LST620' (printed p. 178); builder attribution via 'Chicago B. & I. Co., Seneca, Ill.' block header at LST600
- Finding type
- vessel_history
- Finding
- Official BuShips roster entry for this hull (Ships' Data, U.S. Naval Vessels, Vol. 2, Jan 1945): 'LST620' appears in the Landing Ship, Tank (LST) roster under the 'Chicago B. & I. Co., Seneca, Ill.' builder block (ditto entry below LST600, which names the builder) with keel laid 11 Mar 44, ship launched 30 May 44, and date of first commission 17 Jun 44 - matching the DANFS milestones exactly. The roster's rightmost annotation column is blank for LST620, unlike sisters annotated for conversion (LSV, LCI(G), etc.).
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-02
- Study period
- 1944 (published Jan 1945)
- Population
- Construction trades, CB&I Seneca (1944)
- Limitations
- Primary government roster - documents builder and milestone dates only; no material, insulation, or asbestos content. The 'do.' (ditto) builder attribution is read against the LST600 block header naming Chicago B. & I. Co., Seneca, Ill. The class profile's earlier citation URL (shipscribe.com/styles/usnaux/sdb/SDB1945v2.pdf) now returns 404; the live URL at /pubs/ was verified and substituted.
- Atlas source
- true
- Evidence ID
- ev-uss-lst-620-lst620-02
-
[4]NavSource Online: Amphibious Photo Archive, USS LST-620 (160620) - chronology, campaign tables, commanding-officer table, specifications block [other_primary]
- Locator
- NavSource 10/16/160620.htm - header block, campaign and medal tables, specifications block, CO table, Guam 1945 photo caption
- Finding type
- vessel_history
- Finding
- NavSource Amphibious Photo Archive page for this hull: LST-542 Class; laid down 11 March 1944 at Chicago Bridge and Iron Co., Seneca, IL; launched 30 May 1944; commissioned USS LST-620 on 17 June 1944, LT. Forrest E. Scott, USN, in command. Initially assigned to the Europe-Africa-Middle East Theater, later reassigned to the Asiatic-Pacific Theater under LST Flotilla Thirty-Five, LST Group One Hundred Four, LST Division Two Hundred Seven; Asiatic-Pacific campaign entry: assault and occupation of Okinawa Gunto, 1 May to 30 June 1945. Postwar service periods: Navy Occupation Service Medal 28 September to 1 December 1945; China Service Medal (extended) 5 February to 13 May 1946. Decommissioned 7 June 1946; struck from the Naval Register 19 June 1946; 'Final Disposition, fate unknown.' One battle star for WWII service. Commanding officers listed: ENS Forrest E. Scott (17 Jun 1944 - 10 Feb 1945), LT Cleve E. Loman (19 Feb 1945 - 15 Nov 1945), LTjg Donald W. Jones (15 Nov 1945 - 20 Mar 1946), LTjg James W. Morse (20 Mar 1946 - 7 Jun 1946). A credited photo places the hull moored at Naval Station Guam in 1945. Specifications block: 1,625 t light / 4,080 t full load; 328 ft oa; 50 ft beam; 11.6 kt trial; 13 officers / 104 enlisted; troop accommodations 16 officers / 147 enlisted; two General Motors 12-567A 900-hp diesels, single Falk main reduction gear, three diesel-drive 100-kW 230-V DC ship's service generators, twin propellers 1,700 shp, twin rudders.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-02
- Study period
- 1944-1946
- Population
- Ship's company 1944-46; embarked troops; occupation/China-service crew
- Limitations
- Volunteer-compiled secondary page quoting Navy sources; consistent with DANFS and the BuShips roster where they overlap. Its EAME-theater assignment, unit affiliations, and medal-period detail have no counterpart in the short DANFS entry and rest on NavSource's compilation. Contains no asbestos or material content. 'Fate unknown' conflicts with Shipbuilding History's 'Scrapped 1947' - see ev-04 and gaps.
- Atlas source
- true
- Evidence ID
- ev-uss-lst-620-lst620-03
-
[5]Shipbuilding History (shipbuildinghistory.com), Chicago Bridge & Iron, Seneca IL yard table - LST 620 row and yard history [other_primary]
- Locator
- chicagobridge.htm - LST 620 table row; yard-history paragraph
- Finding type
- historical_record
- Finding
- Shipbuilding History's Chicago Bridge & Iron / Seneca IL yard page lists this hull's production row: 'LST 620, U.S. Navy, Landing Ship, Tank, 3/11/44, 5/30/44, 6/17/44' - matching the official milestone dates - with final disposition column 'Scrapped 1947.' The same page documents the yard context: the Navy requisitioned the Chicago Bridge & Iron facility at Seneca in 1942, invested $6 million in improvements, and operated it as the 'Prairie Shipyard' on a 200-acre site east of town; the yard was sold to Union Mechling in 1949.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-02
- Study period
- 1942-1949 (yard); 1947 (disposition claim)
- Population
- Construction trades, CB&I Seneca 'Prairie Shipyard' (1942-45)
- Limitations
- Secondary compilation, not a primary disposal record - the 'Scrapped 1947' entry conflicts with NavSource's 'fate unknown', and no primary disposal instrument was located; carried as an unresolved disposition lead. No scrapping location, buyer, or material-handling detail is given. Yard description is background only.
- Atlas source
- true
- Evidence ID
- ev-uss-lst-620-lst620-04
-
[6]Consolidated era inference - BuShips SDB-1945 v2 design table (LST542-931 group: GM 12-567A diesel plant, no boilers) + Corn & Starr (1987) and GAO HRD-80-2 era documentation [other_primary]
- Locator
- SDB1945v2 LST542-931 design-table machinery row (diesel, no boiler columns populated)
- Finding type
- asbestos_application
- Finding
- Era/design inference for a diesel-powered amphibious hull built at an inland 'cornfield' yard in 1944: no boilers or steam plant - the steam-lagging pathway does not apply. Plausible asbestos applications on this type concentrate in GM diesel exhaust lagging, engine-room thermal/acoustic insulation, gaskets and packing throughout the engineering spaces, electrical insulation, deck coverings including tank-deck surfaces, accommodation-space insulation, and brake/friction linings on winches and the stern-anchor windlass.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-02
- Study period
- 1944-1947
- Population
- Construction trades, CB&I Seneca (1944); ship's company and embarked troops (1944-46); any disposal/shipbreaking workforce (1946-47)
- Limitations
- Class/era inference only - no hull-level material schedule, insulation spec, drawing, or survey exists in the located public record for this ship; she was disposed of in 1946-47 and any scrapping-era material handling is undocumented. Establishes no presence, absence, or quantity of ACM aboard, no individual exposure, no causation, and no legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-lst-620-lst620-05
-
[7]Corn JK, Starr J. 'Historical perspective on asbestos: policies and protective measures in World War II shipbuilding.' Am J Ind Med 12(4):359-373 (1987) [other_primary]
- Locator
- Journal metadata via DOI
- Finding type
- asbestos_application
- Finding
- Peer-reviewed scholarship documents that WWII-era U.S. shipbuilding extensively installed asbestos-containing insulation, lagging, and gaskets in naval and merchant construction - the era and program context in which this hull was built (1944, Chicago Bridge & Iron, Seneca).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-02
- Study period
- 1940-1945 (era studied)
- Population
- WWII shipyard workers (era context)
- Limitations
- Era-level scholarship; does not name this hull or class and does not establish that any specific material aboard this ship contained asbestos. The diesel plant (no boilers) narrows the exposure-relevant scope relative to steam vessels. DOI resolves to a Wiley page returning HTTP 403 to automated fetch (2026-10-02) - citation verified via record metadata; full text paywalled.
- Atlas source
- true
- Evidence ID
- ev-uss-lst-620-lst620-06
-
[8]U.S. Government Accountability Office, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2 (full text blocked, HTTP 403, confirmed 2026-10-02)
- Finding type
- gov_survey
- Finding
- GAO documented the Navy's asbestos-protection program: shipboard asbestos applications included thermal insulation for machinery, equipment, and piping, with substitution of alternative materials only beginning in the early 1970s - decades after this hull's 1946-47 disposal. Program-level context for the era fleet picture.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-10-02
- Study period
- 1979 (report); describes practice spanning this hull's era
- Population
- Navy shipyard workers; asbestos program review
- Limitations
- Program-level Navy documentation postdating this hull's disposal by more than 30 years - it never governed this hull in service; context only. The report's fieldwork covered Long Beach and Norfolk Naval Shipyards, not CB&I Seneca. Content via product-page description; full text not retrieved.
- Atlas source
- true
- Evidence ID
- ev-uss-lst-620-lst620-07
-
[9]CourtListener API v4 via cl-auth-search.py authenticated helper; type=o (opinions) and type=r (dockets/RECAP) [court_record]
- Locator
- search_ledger rows sl-uss-lst-620-lst620-05 through sl-uss-lst-620-lst620-08
- Finding type
- litigation_documented
- Finding
- CourtListener authenticated searches returned no qualifying result naming this hull: '"LST-620"' in the opinion index returned 0 hits; '"LST 620"' in the opinion index returned 0 hits; '"LST-620"' in the docket/RECAP index returned 0 hits (count 0, document_count 0); '"LST 620"' in the docket/RECAP index returned 0 hits. All four exact-name and hull-number variants across both indexes completed - no asbestos or other litigation naming this vessel was located.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-02
- Study period
- 2026-10-02
- Limitations
- All four required query variants completed with zero hits - a clean negative for the queried indexes. CourtListener coverage is still incomplete for older state-court, bankruptcy, and non-indexed records, and hull-number-only vessels generate near-zero caption collisions; a name match would not itself have been exposure evidence. Does not establish or defeat any claim.
- Atlas source
- true
- Evidence ID
- ev-uss-lst-620-lst620-08
-
[10]Batch-7140 search ledger (this record): DANFS/NHHC live page; BuShips SDB-1945 v2 roster (shipscribe scan); NavSource 160620; Shipbuilding History Seneca page; NARA online deck-log index and catalog; NVR; MARAD ShipHistory; CourtListener API; secondary web sweep [other_primary]
- Locator
- search_ledger rows sl-uss-lst-620-lst620-01 through sl-uss-lst-620-lst620-15
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazardous-material disclosure, insulation drawing, material schedule, or product identification naming LST-620 was found in the public sources searched (see search_ledger). The hull was struck 19 June 1946 and disposed of circa 1947 - before modern hazmat documentation regimes - and no disposal-condition or scrapping record was located. Secondary web sweeps surfaced no qualifying asbestos content for this hull; the only narrative material located is an anecdotal crew-list comment (non-authoritative) consistent with DANFS's China/Japan/Korea service.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-02
- Study period
- 2026-10-02
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - a 1944 hull built to wartime specification is era-consistent with installed ACM, and disposal-pathway records (sale/scrapping circa 1947 per secondary sourcing) are undocumented at the material level. Does not establish presence or absence; does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-lst-620-lst620-09