Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
-
[1]NHHC, DANFS, Sioux IV (T-ATF-171) [nhhc_danfs]
- Locator
- Opening particulars and construction paragraph
- Finding type
- vessel_history
- Finding
- Sioux (T-ATF-171) is a Powhatan-class vessel built by Marinette Marine Corporation at Marinette, Wisconsin. Laid down 22 March 1979, launched 15 November 1980, and delivered to Military Sealift Command on 1 May 1981. DANFS lists complement 21.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- NHHC indexed text was readable; direct page fetch failed. Complement is the historical DANFS figure, not a constant crew count or exposure population. URL slug incorrectly ends in 172; title and body identify 171. No asbestos finding.
- Atlas source
- true
- Evidence ID
- ev-usns-sioux-01
-
[2]NAVSEA, Naval Vessel Historical Evaluation, final determination, 5 January 2024 [other_primary]
- Locator
- Pages 1–3: determination, propulsion, commissioned, inactivated and stricken fields
- Finding type
- vessel_history
- Finding
- NAVSEA records two diesel engines and two shafts; no commissioning; inactivation and striking on 30 September 2021. Its 5 January 2024 determination lists Pearl Harbor and disposition pending, and finds the vessel ineligible for National Register listing.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- Status and location are dated to the 2024 evaluation, not verified as current in 2026. Evaluation is historical, not a hazardous-material survey; diesel propulsion proves neither presence nor absence of asbestos. PDF parsed text reviewed; screenshot rendering and local download failed.
- Atlas source
- true
- Evidence ID
- ev-usns-sioux-03
-
[3]Department of the Navy, Federal Register 46 FR 32023, 19 June 1981 [federal_register]
- Locator
- Page 32023, 32 CFR Part 706 summary and supplementary information
- Finding type
- regulatory
- Finding
- The Navy described USNS Sioux (T-ATF 171) as a naval fleet tug and member of the T-ATF 166 class in its 1981 navigation-light certification rule.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- Navigation-light exemption only; independently supports tug classification, not asbestos, exposure, or command-ship status.
- Atlas source
- true
- Evidence ID
- ev-usns-sioux-04
-
[4]NAVSEA FOIA Reading Room, Asbestos Related Files [other_primary]
- Locator
- Table row QPL-46-(1-6), near bottom; linked 39-page scan
- Finding type
- historical_record
- Finding
- NAVSEA’s asbestos reading-room index lists QPL-46-(1-6), compressed asbestos sheet packing, with dates 24 January 1952 through 8 January 1981. This is Navy-era procurement context overlapping Sioux’s construction period.
- Verification
- verified
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-09-24
- Limitations
- Verified catalog metadata only. The linked scan had no extractable text and was not substantively reviewed. No proof this specification governed Sioux, that any listed product was purchased or installed, or that any person was exposed. Supports Tier 2 context only, never a hull finding.
- Atlas source
- true
- Evidence ID
- ev-usns-sioux-05
-
[5]Batch 9593 source review and search ledger [other_primary]
- Locator
- search_ledger sl-usns-sioux-01 through sl-usns-sioux-13; research/batch-9593/RESEARCH.md
- Finding type
- historical_record
- Finding
- No direct ship-specific asbestos documentation was located in the accessible sources reviewed for this batch. Ship-specific asbestos presence, products, quantities and individual exposure remain unknown; the CourtListener sweep is incomplete because the helper blocked the first search at the fleet pacing gate.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- A bounded search outcome, not a finding that the ship was asbestos-free or that no litigation exists. Blocked/unperformed CourtListener queries are not no-result searches. No medical causation or legal eligibility conclusion.
- Atlas source
- true
- Evidence ID
- ev-usns-sioux-06
-
[6]NARA, MSTS and MSC Deck Logs, 1946–81 [other_primary]
- Locator
- Page title, contents description and Archives II contact
- Finding type
- historical_record
- Finding
- NARA describes Military Sea Transportation Service and Military Sealift Command deck logs spanning 1946–1981, with operational entries and occasional illness or injury entries; Archives II is the stated reference contact.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-09-24
- Limitations
- Collection guidance only: no Sioux log was retrieved or its holding confirmed; coverage after 1981 is not established by this page. Logs are not necessarily material inventories or exposure measurements.
- Atlas source
- true
- Evidence ID
- ev-usns-sioux-07
-
[7]Navy and Marine Corps Force Health Protection Command, MSC Ship Ventilation Design Criteria [other_primary]
- Locator
- Specific Ship Ventilation Design Criteria (CAC-Enabled Content), first listed drawing
- Finding type
- historical_record
- Finding
- The Navy medical MSC ventilation-design index lists drawing 4839449-A-T-ATF-171 beneath a CAC-enabled-content heading.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- Index seen in search-engine text; direct open failed and drawing not retrieved. Asbestos Proficiency Testing Program is navigation text, not a statement about the drawing or hull. Drawing contents and asbestos relevance remain unknown.
- Atlas source
- true
- Evidence ID
- ev-usns-sioux-08
-
[8]NAVSEA, Naval Vessel Historical Evaluation, final determination, 5 January 2024 [other_primary]
- Locator
- Pages 1–2, Name/Hull Number and Lineage
- Finding type
- vessel_history
- Finding
- USNS Sioux T-ATF-171 is a fleet ocean tug, not a command ship. The older Sioux AT-75 is a separate hull.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- Corrects assigned metadata only; predecessor history and exposures cannot be transferred. The official evaluation cites both official and secondary histories; no secondary source is independently adopted here.
- Atlas source
- true
- Evidence ID
- ev-usns-sioux-02