Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
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[1]research packet 911-packet.md (3 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-towanda-pc592-pkt-911-packet-md
-
[2]NavSource Online, Submarine Chaser Photo Archive index, PC-592 Towanda entry and PC-461-class description [other_primary]
- Locator
- PC-461 Class - Continued list, PC-592 Towanda; introductory 173-foot steel-hull PC description
- Finding type
- vessel_history
- Finding
- The NavSource submarine-chaser index identifies PC-592 as Towanda and places it in the PC-461 class of 173-foot steel-hulled, twin-diesel submarine chasers. The index identifies the hull as PC-592 Towanda but does not itself provide a complete ship-specific history page in the retrieved index text.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1959
- Population
- Towanda crew and shipyard personnel
- Limitations
- The index establishes the hull/name/class relationship and general design context, not asbestos content, exact milestone dates, or a complete disposal history. The exact NavSource hull-page URL was not retrievable by the available fetcher; no unsupported page-specific details are carried from it.
- Atlas source
- true
- Evidence ID
- ev-uss-towanda-pc592-01
-
[3]ShipbuildingHistory, PC/SC WWII small-ship construction table, PC 592 row [other_primary]
- Locator
- PC/SC WWII table, PC 592 row
- Finding type
- historical_record
- Finding
- The construction table identifies PC-592 as built by Dravo Corporation, Pittsburgh, Pennsylvania, in the 173-foot PC series, with commissioning/delivery date 28 November 1942. It records the postwar name Towanda in 1956 and a 1959 strike/disposal notation.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1959
- Population
- Dravo construction workforce; commissioned crew
- Limitations
- This is an authoritative secondary compilation, not a Navy register scan; it does not establish asbestos content and its 1959 notation is less precise than the official Navy removal record. The build and naming data are used with the official NHHC class record and NARA log index below.
- Atlas source
- true
- Evidence ID
- ev-uss-towanda-pc592-02
-
[4]Naval Sea Systems Command, Inactive Ships ship-history table, 28 June 2011 [other_primary]
- Locator
- Table row 'PC 0592 | TOWANDA | 21-Sep-59 | SCRAP SALE'
- Finding type
- historical_record
- Finding
- The Navy inactive-ship history table lists hull PC 0592 as TOWANDA, with removal date 21 September 1959 and final disposition SCRAP SALE.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1959
- Population
- Navy custody/disposal records; later scrap workers are not identified
- Limitations
- The table records removal and final disposition, not the date of decommissioning, the purchaser, the physical dismantling site, or asbestos material status. It is a disposal record rather than an exposure or abatement record.
- Atlas source
- true
- Evidence ID
- ev-uss-towanda-pc592-03
-
[5]National Archives, Special List 44 by ship number, Navy deck-log coverage table [other_primary]
- Locator
- Special List 44, PC-592 row
- Finding type
- historical_record
- Finding
- NARA's ship-number list includes PC-592 with deck-log coverage beginning 29 November 1942 and ending 30 June 1945, providing a primary-record lead for the ship's commissioned wartime service.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-11-29 to 1945-06-30
- Population
- PC-592 crew and Navy deck-log custodial records
- Limitations
- The list is a finding aid, not the deck-log text; it does not establish specific voyages, crew exposure, asbestos content, or whether all listed logs are digitized or available for review. No individual PC-592 log pages were reviewed in this batch.
- Atlas source
- true
- Evidence ID
- ev-uss-towanda-pc592-04
-
[6]Naval History and Heritage Command, Radar and Sonar exhibit, photograph L55-03.07.01 [museum_official]
- Locator
- L55-03.07.01, 'Reservists study fundamentals of Navy sonar equipment'
- Finding type
- historical_record
- Finding
- NHHC identifies an official Navy photograph showing two Naval Reservists undergoing a course of instruction with naval sonar equipment aboard USS PC 592 at Naval Base, South Carolina; the catalog identifies the men as Seaman First Class F.C. Semkin and Apprentice Seaman G.S. Jackson.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- World War II era; exact photograph date not stated on the page
- Population
- Naval Reservists and PC-592 training personnel
- Limitations
- The photograph and catalog establish a ship-specific training scene and sonar equipment aboard PC-592, but do not identify asbestos-containing materials, exposure, dates beyond the collection context, or the ship's full operational history.
- Atlas source
- true
- Evidence ID
- ev-uss-towanda-pc592-05
-
[7]NHHC DANFS, Kittery II (PC-1201), PC-592-class comparison record [nhhc_danfs]
- Locator
- Kittery II DANFS specifications block and service narrative; class listed as PC-592
- Finding type
- asbestos_application
- Finding
- NHHC's DANFS record for sister PC-592-class vessel Kittery gives the class's 174-foot, diesel-powered submarine-chaser configuration, including two H.O.R. diesel engines, two shafts, a 3-inch gun, 40mm and 20mm weapons, depth-charge equipment, and a complement of 60. This supports treating Towanda as a small diesel combatant rather than a steam-powered vessel for asbestos-pathway context.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1959 class/era context
- Population
- PC-592-class crews and maintenance personnel
- Limitations
- This is a sister-hull/class record and does not establish Towanda's exact equipment, complement, insulation, or asbestos content. It supports only class/era context; no asbestos installation is inferred as a ship-specific finding.
- Atlas source
- true
- Evidence ID
- ev-uss-towanda-pc592-06
-
[8]NHHC PC-592-class diesel configuration plus GAO HRD-80-2 era framing used as a research inference [other_primary]
- Locator
- NHHC Kittery II PC-592-class specifications; era inference stated expressly as non-hull-specific
- Finding type
- asbestos_application
- Finding
- Era/class inference: a steel naval vessel constructed in 1942 falls within the period when asbestos-containing insulation, packing, gaskets, electrical insulation, and deck materials were commonly used in ship construction and maintenance. For a twin-diesel PC-592-class hull, the plausible systems are machinery and exhaust insulation or lagging, gaskets, packing, electrical insulation, and deck covering/cement; a boiler/turbine lagging pathway is not applicable to the documented diesel configuration.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1959 and later disposal activity
- Population
- 1942 construction trades, engineering personnel, later repair/scrap workers
- Limitations
- Class/era inference only. No source located in this batch proves that any listed product was installed on Towanda, quantifies material, identifies a manufacturer, documents disturbance, or establishes individual exposure, causation, or legal eligibility. The product list is therefore not a ship-specific asbestos finding.
- Atlas source
- true
- Evidence ID
- ev-uss-towanda-pc592-07
-
[9]CourtListener authenticated helper sweep required by batch protocol: four base queries attempted, but the shared fleet pacing limiter reported its request budget momentarily spent before any result page was returned [other_primary]
- Locator
- search_ledger rows sl-uss-towanda-pc592-07 through -10; cl-uss-towanda-name-opinion.err, cl-uss-towanda-name-docket.err, cl-pc592-hull-opinion.err, cl-pc592-hull-docket.err
- Finding type
- historical_record
- Finding
- No litigation conclusion can be drawn from this session. The four required base searches were attempted through the authenticated helper: exact-name opinion and docket ('USS Towanda'), and hull-number opinion and docket ('PC-592'). The helper did not return result pages because the shared fleet pacing limiter was spent; this is an access gap, not a no-result finding. No asbestos-qualified variants were run because no base query produced a 20-result overflow.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03 search attempt
- Population
- Potential asbestos and other litigation records indexed by CourtListener
- Limitations
- This row does not establish that no case exists and does not classify unseen hits. The four query attempts and pacing errors are preserved in the batch worktree's cl-*.err files and search ledger. A later authenticated run is required for a complete litigation classification.
- Atlas source
- true
- Evidence ID
- ev-uss-towanda-pc592-08
-
[10]Source-access audit: Firecrawl MCP returned KEYLESS_QUOTA_EXHAUSTED with an approximately 23-hour retry interval; direct authoritative-page fallback used [other_primary]
- Locator
- Firecrawl MCP response: KEYLESS_QUOTA_EXHAUSTED; fallback source URLs in search_ledger
- Finding type
- historical_record
- Finding
- The required Firecrawl search/scrape route was unavailable during this batch because the hosted keyless Firecrawl quota was exhausted. Research therefore used direct authoritative web search/page access and records the Firecrawl access gap rather than treating Firecrawl's unavailable response as a historical negative.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- context_only
- Accessed
- 2026-10-03
- Study period
- 2026-10-03
- Population
- Research workflow
- Limitations
- This is a process/access finding, not evidence about Towanda. The direct sources cited in the other rows were independently selected and their limitations remain applicable.
- Atlas source
- true
- Evidence ID
- ev-uss-towanda-pc592-09