Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
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[1]NavSource Online: Amphibious Photo Archive, USS LSM-470 page - construction milestones, theater assignments, awards, specifications, disposal (history extract attributed to LSM-LSMR Amphibious Forces, Vol. II, Turner Publishing, 1997) [other_primary]
- Locator
- NavSource 10/14/14470.htm header block, awards block, specifications block, disposition lines
- Finding type
- vessel_history
- Finding
- Documented for this hull: LSM-1 class landing ship medium; laid down 27 January 1945 at Brown Shipbuilding Co., Houston TX; launched 17 February 1945; commissioned USS LSM-470 19 March 1945, LT. William McKinley Johnson USNR in command; assigned to the Asiatic-Pacific Theater (LSM Flotilla Fifteen, LSM Group Forty-Four, LSM Division Eighty-Nine); postwar Occupation and China service 2 September 1945 - 25 July 1946 (Navy Occupation Service Medal and China Service Medal extended windows); decommissioned 25 July 1946 and transferred the same day to the Republic of China; struck from the Naval Register date unknown; final disposition fate unknown. Specifications: 520 t light / 743 t landing / 1,095 t full load; 203'6" oa; 34'6" beam; 13.2 kt; complement 5 officers + 54 enlisted; armament one twin 40mm + four single 20mm; propulsion two Fairbanks Morse 38D8-1/8 reversible diesels, direct drive with hydraulic clutch, 1,440 bhp each @ 720 rpm, twin propellers 2,800 shp; ship's service generators 2 x 100 kW 450 V AC + 1 x 20 kW 120 V DC diesel-drive.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-01
- Study period
- 1944-1946
- Population
- Brown Shipbuilding construction trades (1944-45); crew (1945-46); embarked troops during China service
- Limitations
- Ship-specific history and specifications only; no asbestos or material content. NavSource is a volunteer secondary compilation, not a primary registry - its underlying history extract here is Turner Publishing's LSM-LSMR Amphibious Forces Vol. II (1997); no DANFS entry exists for this hull against which to cross-check. Striking date and ROCN disposition are unestablished.
- Atlas source
- true
- Evidence ID
- ev-uss-lsm-470-01
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[2]uboat.net Allied Warships of WWII, USS LSM 470 (LSM 470) entry - order date, build milestones, disposition [other_primary]
- Locator
- uboat.net warship record table, ship ID 13057
- Finding type
- vessel_history
- Finding
- Independent secondary corroboration of this hull's timeline: ordered 10 July 1944; built by Brown Shipbuilding Co., Houston, Texas; laid down 27 January 1945; launched 17 February 1945; commissioned 19 March 1945; end of U.S. service 25 July 1946 - 'decommissioned on 25 July 1946 and transferred to China.' The order date (10 July 1944) is not stated on NavSource.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-01
- Study period
- 1944-1946
- Population
- n/a
- Limitations
- Secondary compilation only - corroborates NavSource milestones and supplies the order date; carries no asbestos, material, or crew content. The page's 'notable events' module lists generic dated convoy entries unrelated to this hull and was disregarded.
- Atlas source
- true
- Evidence ID
- ev-uss-lsm-470-02
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[3]Library of Virginia, World War II Separation Notices: Navy - NAVPERS-553 (Rev. 8-45) for William Corbitt Barclay Jr., StM3c, serial 936 76 50 (FromThePage crowdsourced transcription) [other_primary]
- Locator
- FromThePage work 1140043-010-082-001, 'Service Vessels and Stations' field of NAVPERS-553
- Finding type
- historical_record
- Finding
- A primary personnel document names this hull: the NAVPERS-553 separation notice for William Corbitt Barclay Jr. (Steward's Mate 3rd Class; ratings held AS, S1c, ETM3c, RT3c) lists under Service Vessels and Stations 'NTS Great Lakes, Ill.; NTSch., Chicago, Ill.; NTS Gulfport, Miss.; NRL Washington, D.C.; U.S.S. LSM 470.' Barclay was inducted 30 June 1944, held amphibious landing craft and landing ship qualifications, and was honorably separated 21 June 1946 at USNPSC Shelton, Virginia; recorded medals were American Area, World War II Victory, and Asiatic-Pacific Area - consistent with the ship's documented Pacific theater assignment.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-01
- Study period
- 1944-1946
- Population
- StM3c William Corbitt Barclay Jr.; LSM-470 wartime crew
- Limitations
- Vessel-history personnel record only: establishes that one named enlisted man served aboard this hull during its 1945-46 commission. It is NOT an exposure record - it establishes nothing about asbestos or any other material aboard, and no exposure claim is made for Barclay or any individual. Transcription is crowdsourced (status 'Needs Review'); the underlying facsimile is Library of Virginia's.
- Atlas source
- true
- Evidence ID
- ev-uss-lsm-470-03
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[4]National Museum of the U.S. Navy photograph via NavSource: USS LSM-470 with USS LSM-157 and USS LSM-390 moored together during China Service, 12 March 1946; plus USS LSM-LSMR Association photo series (relief supplies upriver; Chinese pilot aboard; moored in a Chinese river) [other_primary]
- Locator
- NavSource 10/14/14470.htm image table (101447001 through 101447009 series)
- Finding type
- historical_record
- Finding
- Archival photography places this hull on China service in 1945-46: a National Museum of the U.S. Navy photo documents LSM-470 moored with USS LSM-157 and USS LSM-390 during China Service on 12 March 1946; a second photo credits her with LSM-157, LSM-390, and YOG-62; further association photos show her loading relief supplies for transit up a Chinese river, underway in Chinese waters with a Chinese pilot aboard, moored pierside in China, and transiting a Chinese river gorge.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-01
- Study period
- 1945-1946
- Population
- Crew during China service (1945-46)
- Limitations
- Archival lead only: photographs establish physical presence and operating conditions (river transit, pierside, moored groups), not work performed or materials aboard. Original NARA/museum catalog identifiers not extracted; captions as transcribed by NavSource. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-lsm-470-04
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[5]Era inference built on: NavSource specifications block (Fairbanks Morse diesel plant, no boilers); GAO HRD-80-2 finding that asbestos thermal insulation was the Navy's major shipboard asbestos use until the 1973 specification revision (ev-06); LST-1-class profile era analysis for the diesel-powered amphibious family [other_primary]
- Locator
- NavSource 10/14/14470.htm specifications block; GAO HRD-80-2 'Navy's Policy on Use of Asbestos' section
- Finding type
- asbestos_application
- Finding
- A diesel-powered LSM-1-class landing ship built January-March 1945 sits squarely inside the Navy's documented asbestos-use era. Era-standard asbestos applications aboard a landing ship of this type and period were diesel-exhaust lagging, engine-room thermal/acoustic insulation, gaskets, valve packing, deck coverings, accommodation/bulkhead insulation, and electrical cable insulation. As a diesel ship she carried no steam plant - the boiler/turbine lagging pathway of steam vessels does not apply; the exposure pathway concentrates in the engine room and interior finishes of a small, enclosed amphibious hull.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-01
- Study period
- 1944-1946 (U.S. era); ROCN era unbounded
- Population
- Brown Shipbuilding construction trades (1944-45); crew (1945-46); ROCN crew (1946-forward)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for LSM-470. Names era-standard applications, not confirmed installed materials. No quantity. Product names are normalized era terms; no manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-lsm-470-05
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[6]GAO, Navy's Efforts to Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) - full text retrieved this session via Firecrawl (https://www.gao.gov/assets/hrd-80-2.pdf) [gao]
- Locator
- HRD-80-2 letter and 'Navy's Policy on Use of Asbestos' section (full text PDF, ~26 pp)
- Finding type
- gov_survey
- Finding
- GAO documented Navy-wide asbestos practice spanning this hull's construction era: 'all ships contain some asbestos in such components as clutches and electric cables'; 'thermal insulation ... was the Navy's major use of asbestos aboard ships'; product specifications for thermal insulation were changed in 1973 to specify asbestos-free materials, but 'asbestos materials had already been purchased and in some cases installed in ships under construction,' with some ships delivered with asbestos insulation as late as May 1978. A ship built in early 1945 therefore sits well inside the era of standard asbestos thermal insulation use.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-01
- Study period
- 1979 (report); practice window spans 1945 construction era
- Population
- Navy shipyard workers; asbestos program review
- Limitations
- Program-level documentation; supports era context only, not any fact specific to this hull. Fieldwork yards were Long Beach and Norfolk Naval Shipyards, not Brown Shipbuilding. Does not establish materials aboard LSM-470, individual exposure, or quantity.
- Atlas source
- true
- Evidence ID
- ev-uss-lsm-470-06
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[7]U.S. Naval Institute, Naval History (June 2025), 'The Brown Shipbuilding Company's Rise During World War II'; corroborated by Texas State Historical Association Handbook of Texas, 'Shipbuilding' entry [reputable_press]
- Locator
- USNI Naval History June 2025 article, production paragraph; TSHA Handbook 'Shipbuilding' WWII paragraphs
- Finding type
- historical_record
- Finding
- Builder context for this hull: Brown Shipbuilding Co., Houston - founded 1941-42 by George and Herman Brown of Brown & Root - built 12 PC-461-class submarine chasers, 61 destroyer escorts, 32 Landing Craft Infantry, and 254 Landing Ship Medium hulls (USNI; Wikipedia/shipbuilding-data compilations place Brown's LSM blocks at LSM-1/125, LSM-354/388, LSM-459/552, which brackets this hull, LSM-470). TSHA documents Brown Shipbuilding's wartime Navy contracts exceeding $300 million. The yard operated 1941-46 on Green's Bayou off the Houston Ship Channel with a largely wartime-recruited workforce.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-01
- Study period
- 1941-1946
- Population
- Brown Shipbuilding wartime workforce (1941-46)
- Limitations
- Yard-level history, not a hull record: documents the builder's WWII production scope and workforce, not materials installed aboard LSM-470. Brown Shipbuilding closed its naval production era in 1946 - before OSHA-era surveys - and is not an Atlas shipyards.json entry (see gaps). No asbestos content in either cited source.
- Atlas source
- true
- Evidence ID
- ev-uss-lsm-470-07
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[8]Batch-6284 search ledger (this record): NavSource LSM-470 page; NHHC DANFS; NVR; uboat.net; Library of Virginia separation notice; navypedia ROCN MEI CHIN roster; GAO HRD-80-2 full text; USNI/TSHA builder history; CourtListener (see ledger status); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-lsm-470-01 through sl-uss-lsm-470-12
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming USS LSM-470 was found in the public sources searched (see search_ledger). CourtListener opinion search on 'LSM-470' returned 9 hits, all name collisions (L.S.M. General Contractors, postal-service opinions, OCR noise) - no vessel or asbestos case among them; the CourtListener docket index could not be queried (fleet pacing budget exhausted after the opinion query - see sl-12). Secondary web sweeps surfaced no qualifying case; the only 'asbestos aboard' material is law-firm marketing content (mesothelioma/ships listicles) asserting asbestos without primary sourcing - excluded by source policy.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-01
- Study period
- 2026-10-01
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - the ship's 1945 construction sits inside the Navy's documented asbestos era. The litigation search is partial: opinions were queried and returned only collisions, but the RECAP docket index was not run (throttled). Deck logs (RG 24), builder work packages at Brown Shipbuilding, and ROCN-era records are undigitized/unsearched leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-lsm-470-08