Evidence
6 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-6).
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[1]research packet ty-packet.md (2 sources cited) [nhhc_danfs]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: **VERIFIED (corroboration limited)
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Limitations
- qualifier: **VERIFIED (corroboration limited)**
- Evidence ID
- uss-lsm-221-lsm221-pkt-ty-packet-md
-
[2]NavSource Online, USS LSM-221, Amphibious Photo Archive [other_primary]
- Locator
- Ship-history bullets and Okinawa campaign table; page live (HTTP 200)
- Finding type
- vessel_history
- Finding
- NavSource records LSM-221 as laid down 9 June 1944 at Dravo Corporation, Wilmington, Delaware; launched 29 July 1944; commissioned 26 August 1944; assigned to the Asiatic-Pacific Theater in LSM Flotilla Six, LSM Group Sixteen, and LSM Division Thirty-Two; and as participating in the Okinawa Gunto assault and occupation from 2 April through 17 June 1945. It records Far East occupation service from 17 September 1945 through 16 February 1946; decommissioning on 18 March 1947 at Mare Island Navy Yard, Vallejo, California; sale on 29 December 1947 for commercial service; operation by Commercial Barge Lines as M/V Commercial Courier; and sale for scrapping in 1961 to Charles Weaver & Co., Detroit, Michigan.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-01
- Study period
- 1944-1961
- Population
- Ship's crew; Navy, transfer, and disposal personnel
- Limitations
- Ship-history record; does not document asbestos content, an asbestos survey, abatement, individual exposure, causation, or legal eligibility. NavSource gives the struck-from-register date as unknown.
- Atlas source
- true
- Evidence ID
- ev-uss-lsm-221-lsm221-01
-
[3]NavSource Online, USS LSM-221 specifications [other_primary]
- Locator
- Specifications and propulsion blocks; page live (HTTP 200)
- Finding type
- historical_record
- Finding
- NavSource gives this hull's LSM-1-class specifications as two Fairbanks Morse model 38D81/8X10 diesel engines, reversible with hydraulic clutch, direct drive, rated at 1,440 BHP each at 720 rpm; twin propellers; 2,800 shaft horsepower; and a complement of 5 officers and 54 enlisted personnel.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-01
- Study period
- 1944-1947
- Population
- Ship's crew and construction personnel
- Limitations
- Ship specification record used for identity, crew, and propulsion summary; it does not establish asbestos-containing materials or exposure aboard this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-lsm-221-lsm221-02
-
[4]NIOSH HETA 85-021-1654, Portsmouth Naval Shipyard (January 1986) [other_primary]
- Locator
- PDF pp. 4-5, insulation-shop background; file live (HTTP 200)
- Finding type
- environmental_record
- Finding
- NIOSH documented that a Portsmouth Naval Shipyard insulation shop had previously prepared and stored asbestos insulation and that its workers performed rip-outs and pipe covering aboard Navy ships and submarines.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-01
- Study period
- 1984-1985 evaluation; report issued 1986
- Population
- Portsmouth Naval Shipyard insulation workers
- Limitations
- Different shipyard and later period; occupational-health context only. The report does not identify LSM-221, prove asbestos aboard it, or establish exposure for its crew or workers.
- Atlas source
- true
- Evidence ID
- ev-uss-lsm-221-lsm221-03
-
[5]Search of official and authoritative sources for ship-specific asbestos documentation [other_primary]
- Locator
- Research sweep documented in search ledger entries sl-01 through sl-06
- Finding type
- asbestos_application
- Finding
- No ship-specific asbestos survey, abatement contract, hazmat disclosure, material inventory, or other primary asbestos record for LSM-221 was located in the accessible sources searched. Ship-specific asbestos documentation is unknown, not established absent.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-01
- Study period
- 1944-2026
- Population
- Hull-specific records
- Limitations
- Negative finding limited to accessible public sources. Firecrawl MCP tools were not available in this environment; an NHHC candidate page returned HTTP 404 live; the GAO HRD-80-2 product page returned HTTP 403; and non-digitized Navy technical files and underlying archival records were not reviewed.
- Atlas source
- true
- Evidence ID
- ev-uss-lsm-221-lsm221-04
-
[6]Authenticated CourtListener exact-name and exact-hull litigation sweep [court_record]
- Locator
- Search ledger entries sl-07 through sl-10; opinion query HTTP 200/count 0; two searches pacing-limited and one search pending
- Finding type
- historical_record
- Finding
- The completed authenticated CourtListener exact-name opinion search for "USS LSM-221" returned zero indexed results. The exact-name docket and exact-hull opinion searches were pacing-limited before a request was sent, and the exact-hull docket search remains pending. No qualifying asbestos-litigation finding is carried in this record.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-01
- Study period
- 2026-10-01 search
- Population
- CourtListener opinions and RECAP dockets
- Limitations
- This is an incomplete sweep, not evidence that litigation does not exist. The completed query is limited to CourtListener-indexed opinions; the two pacing-limited searches were not retried after the helper directed the session to do non-CourtListener work because the shared pacing budget was spent, and the remaining exact-hull docket query was not submitted.
- Atlas source
- true
- Evidence ID
- ev-uss-lsm-221-lsm221-05