Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
-
[1]NavSource Naval History, Mine Warfare Vessel Photo Archive, "AMCU-1" page (private naval-history archive; compiled service chronology, not an official Navy publication) [other_primary]
- Locator
- NavSource archive page 11/0401.htm, service chronology block
- Finding type
- vessel_history
- Finding
- LCT(6)-843 was laid down 25 May 1944 by the Kansas City Structural Steel Co., Kansas City, MO, and placed in service 20 June 1944 under LTJG J. T. Colentine, USN. It was reclassified as a coastal minesweeper (underwater locator), AMCU-1, on 10 March 1945. In September 1945 it was transferred to the U.S. State Department's Foreign Liquidation Commission; its subsequent fate is not documented in the sources located.
- Verification
- partial
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-23
- Study period
- 1944-1945
- Population
- Ship's company (class-generic LCT(6) figure only, not hull-verified - see gaps)
- Limitations
- This session's network egress policy blocked a direct WebFetch read of navsource.org/.net (EGRESS_BLOCKED / DNS error on both hosts); this finding is built from the WebSearch tool's synthesis of that page, cross-checked as internally consistent across four independent search queries run on 2026-09-23. Treated as 'partial' rather than 'verified' because the underlying page text was never read directly. Contains no asbestos, insulation, or hazardous-material information of any kind. The launch-date figure surfaced by the same search method (21 Jun 1944, one day after the in-service date) is internally inconsistent and is not carried as a clean fact - see gaps. This is a private research-site compilation, not a DANFS entry: no NHHC DANFS page exists for this unnamed small craft (individually unnamed WWII landing craft are typically not covered in DANFS).
- Atlas source
- true
- Evidence ID
- ev-uss-amcu-1-amcu1-01
-
[2]Shipbuilding History (Tim Colton) / Naval Marine Archive, "LCT(6) - Landing Craft, Tank" class reference page [other_primary]
- Locator
- shipbuildinghistory.com LCT(6) class page, design specification block
- Finding type
- vessel_history
- Finding
- The LCT(6) (Mark 6 Landing Craft, Tank) design: approximately 965 built; length approx. 119-120 ft overall; light displacement approx. 143-160 tons, full load approx. 309-320 tons; three diesel engines (commonly cited as Gray Marine/General Motors 6-71 series); speed approx. 10 knots; a diesel plant with no boilers. This is the class design under which LCT(6)-843 (later AMCU-1) was built - a class-level specification, not a survey of this specific hull.
- Verification
- partial
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-23
- Study period
- 1942-1945 (LCT(6) class production)
- Limitations
- This session's network egress policy blocked a direct WebFetch read of shipbuildinghistory.com and its navalmarinearchive.com mirror (both returned EGRESS_BLOCKED); this finding is built from WebSearch synthesis of that page. Class-generic design data only - does not name hull 843/AMCU-1 specifically and does not establish this hull's actual as-built specifications, nor any asbestos, insulation, or materials content. The Kansas City Structural Steel yard's own hull-by-hull delivery table (which would show hull 843's specific delivery record) could not be read directly and its exact wording for this hull is not independently confirmed - see gaps.
- Atlas source
- true
- Evidence ID
- ev-uss-amcu-1-amcu1-02
-
[3]Shipbuilding History (Tim Colton) / Naval Marine Archive, "Kansas City Steel" shipyard history page [other_primary]
- Locator
- shipbuildinghistory.com / navalmarinearchive.com Kansas City Steel yard-history page
- Finding type
- historical_record
- Finding
- Kansas City Structural Steel Co. (Kansas City, MO) built landing craft for the U.S. Navy during WWII, including approximately 85 LCTs, from a Kaw River plant with a second outfitting yard developed on the Missouri River in the Fairfax district to handle the wartime output; total wartime landing-craft production across all types (LCTs, LCM(6)s, LCM(3)s) is cited at approximately 407 craft.
- Verification
- partial
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-23
- Study period
- 1942-1945 (yard operation)
- Population
- Kansas City Structural Steel Co. wartime workforce (yard-level, not this hull specifically)
- Limitations
- This session's network egress policy blocked a direct WebFetch read of navalmarinearchive.com and shipbuildinghistory.com (both returned EGRESS_BLOCKED); this finding is built from WebSearch synthesis of that page. Confirms the builder identity and yard-level wartime LCT output as background only - it is not a hull-specific record for LCT(6)-843/AMCU-1 and contains no asbestos or shipboard-materials information. Kansas City Structural Steel Co. is not present in any shipyards.json-style dataset in this repository, so related_shipyards is left empty rather than guessed (see gaps).
- Atlas source
- true
- Evidence ID
- ev-uss-amcu-1-amcu1-03
-
[4]Corn, Jacqueline Karnell, and Jennifer Starr, "Historical perspective on asbestos: Policies and protective measures in World War II shipbuilding," American Journal of Industrial Medicine 11(3):359-373 (1987) [other_primary]
- Locator
- AJIM 11(3):359-373 (1987), DOI 10.1002/ajim.4700110311 - citation metadata confirmed via the journal's own indexed abstract page; full text not retrieved (this session's network egress policy blocked onlinelibrary.wiley.com/pubmed retrieval)
- Finding type
- asbestos_application
- Finding
- Peer-reviewed historical scholarship documents that asbestos-containing insulation, lagging, gaskets, and packing were used extensively in U.S. Navy shipbuilding during World War II - the era and wartime production program (an emergency-built small-craft assembly yard) under which LCT(6)-843 was constructed in 1944.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-23
- Study period
- 1941-1945 (study scope); applied to this hull's 1944 construction
- Population
- WWII-era U.S. shipyard workers (class/era context); wartime LCT(6) crew
- Limitations
- Program/era-level scholarly documentation of WWII shipbuilding asbestos use generally; does not name this vessel, its class, or its builder, and does not establish that any specific material aboard this diesel-powered landing craft (which had no boilers) contained asbestos, nor its quantity, location, condition, or any exposure or causation claim. Citation verified at the metadata/DOI level, not by a full-text read.
- Atlas source
- true
- Evidence ID
- ev-uss-amcu-1-amcu1-04
-
[5]CourtListener API v4 search results (opinions, RECAP documents, and dockets), queried directly via the CourtListener MCP connector [court_record]
- Locator
- search_ledger rows sl-uss-amcu-1-amcu1-06 through sl-uss-amcu-1-amcu1-09
- Finding type
- litigation_documented
- Finding
- No qualifying litigation located naming this hull under any of its identities. CourtListener API v4 opinion search (type=o) for "AMCU-1", "LCT(6)-843", and "LCT-843" each returned zero results. A RECAP full-text search (type=r) for "AMCU-1" combined with "asbestos" returned an oversized, non-matching result set (a generic-term collision, not a hit on this hull); a docket search (type=d) for "AMCU-1" returned a single result, L.B. v. Premera Blue Cross (W.D. Wash., 2:23-cv-00953) - an unrelated 2023 civil-rights/insurance-coverage case with no connection to this vessel, classified as noise, not a name collision on the ship. Narrowed RECAP searches for "LCT(6)-843" + asbestos and "LCT 843" + asbestos both returned zero results.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-23
- Study period
- 2026-09-23
- Limitations
- Absence of a located case does not prove no litigation exists naming this hull under a variant spelling or docket text not captured by these queries; coverage of pre-2000s RECAP/opinion digitization is uneven. This finding addresses documentation only - it does not establish or defeat any claim of exposure or legal eligibility. Queried directly through the CourtListener MCP connector (not the raw API key), which was not subject to this session's WebFetch/curl egress restriction.
- Atlas source
- true
- Evidence ID
- ev-uss-amcu-1-amcu1-05
-
[6]Batch-1640 search ledger (this record): NavSource AMCU-1 archive page; shipbuildinghistory.com/navalmarinearchive.com LCT(6) class and Kansas City Steel yard pages; CourtListener API v4 opinion, RECAP, and docket searches; NRHP/wreck-site name check [other_primary]
- Locator
- search_ledger rows sl-uss-amcu-1-amcu1-01 through sl-uss-amcu-1-amcu1-11
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or docketed case naming LCT(6)-843, LCT-843, AMCU-1, or "AMCU 1" was found in the public sources searched (see search_ledger). This hull spent its entire documented Navy custody (June 1944 - September 1945) as an in-service small craft and was transferred out of Navy hands before any post-war hull survey, museum preservation, or abatement program could apply; its post-1945 fate is unknown, so no present-day materials disclosure is possible.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-23
- Study period
- 2026-09-23
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - a 1944-built diesel landing craft is era-consistent with asbestos-containing exhaust lagging, engine-space insulation, gaskets, and packing. This finding addresses documentation only: no source establishes asbestos presence or absence aboard this hull, and none establishes or defeats any exposure or legal-eligibility claim. This session's network egress restrictions (see gaps) further limit how deeply the negative finding could be tested against primary-source page text directly.
- Atlas source
- true
- Evidence ID
- ev-uss-amcu-1-amcu1-06
-
[7]NARA Guide to Federal Records (record-group mapping only, not a retrieved document) [other_primary]
- Locator
- Record-group mapping only - no box-level retrieval performed
- Finding type
- historical_record
- Finding
- Archival lead (not retrieved - requires research-room or reproduction order; no spend authorized): NARA RG 178 (Records of the U.S. Maritime Commission) and Bureau of Ships construction-program records may hold Kansas City Structural Steel LCT(6) contract/hull files for hull 843; State Department Foreign Liquidation Commission disposal records (likely within State Department or War Assets Administration record groups) would be the documentary lead for this hull's post-September-1945 fate, which is otherwise undocumented in the public sources searched.
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-09-23
- Study period
- 1944-1945 records
- Limitations
- Record-group mapping only, and this session's network egress policy blocked a direct WebFetch read of archives.gov, so even the mapping above rests on general knowledge of NARA record-group structure rather than a confirmed page read. Existence of asbestos-specific or disposal-specific documents for hull 843/AMCU-1 is unknown until surveyed in person. Nothing in this row is an asbestos finding.
- Atlas source
- true
- Evidence ID
- ev-uss-amcu-1-amcu1-07