Evidence
6 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-6).
-
[1]MARAD ShipHistory Detail 210 [marad_nrc]
- Locator
- Identity fields; Vessel Name History; Milestones, Transfer 1/7/1964
- Finding type
- vessel_history
- Finding
- MARAD identifies American Mariner (T-AGM-12) as an EC2-S-C1 missile range instrumentation ship built by Bethlehem-Fairfield Shipyard. Its milestone table records transfer to the Navy on 7 January 1964 with the mission unchanged.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Study period
- 1964
- Limitations
- Identity and transfer record only; no asbestos finding. This row does not establish the precise end of Navy service, crew strength, or asbestos products.
- Atlas source
- true
- Evidence ID
- ev-usns-american-mariner-01
-
[2]MARAD vessel status cards D8_01 and 210_395AF; Detail 210 [marad_nrc]
- Locator
- Cards D8_01.png: header and delivery column; 210_395AF.jpg: box 7; page Year Built
- Finding type
- historical_record
- Finding
- MARAD card D8_01 identifies former name George Calvert, MCE hull 20, and Baltimore builder location. It dates completion and delivery to 10 March 1943. The database Year Built field says 1942, while card 210_395AF describes 1942 as incomplete. These are recorded separately rather than converted into a single unqualified completion date.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Study period
- 1942–1943
- Limitations
- Cards were visually inspected. Earlier construction/training history establishes identity only and does not support the Navy-period asbestos assessment. The meaning of the differing build/completion fields remains unresolved.
- Atlas source
- true
- Evidence ID
- ev-usns-american-mariner-02
-
[3]NHHC photographic catalog NH 89099; MARAD Detail 210 [nhhc_danfs]
- Locator
- NH 89099 title and caption; MARAD Milestones, Disposal
- Finding type
- vessel_history
- Finding
- NHHC photograph NH 89099 identifies USNS American Mariner T-AGM-12 and describes sinking in October 1966 by Underwater Demolition Team 22 as the replacement Chesapeake Bay target for USS Hannibal. MARAD also records scuttling in the Chesapeake Bay in October 1966.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Study period
- 1966-10
- Limitations
- NHHC caption read through indexed official text; direct web retrieval failed and local retrieval encountered certificate verification failure. MARAD page retrieved directly. Only the month is adopted: MARAD lists 1 October, while a secondary chronology lists 21 October. No present wreck-condition or asbestos inference.
- Atlas source
- true
- Evidence ID
- ev-usns-american-mariner-03
-
[4]OSHA, Occupational Exposure to Asbestos, 10 August 1994 [federal_register]
- Locator
- Shipbuilding and repairing — historical contact with asbestos in shipyard work
- Finding type
- asbestos_application
- Finding
- OSHA’s 1994 rulemaking describes extensive asbestos use on American ships from the early 1940s through the late 1970s, including machinery-space insulation and bulkhead materials. This is general era context relevant to researching the assigned 1964–1966 Navy service window.
- Verification
- verified
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-09-24
- Study period
- 1940s–1970s; published 1994
- Limitations
- Historical passage verified in indexed text from the official OSHA page; direct opening returned HTTP 403. The source does not identify American Mariner. Tier 2 denotes era context only, not installed materials, individual exposure, causation, or a finding that this hull contained asbestos. Earlier Army, Air Force, merchant-training and Coast Guard service is not used as the verdict basis.
- Atlas source
- true
- Evidence ID
- ev-usns-american-mariner-04
-
[5]Codex batch-9508 research and search ledger [other_primary]
- Locator
- search_ledger sl-01 through sl-12; research/batch-9508/RESEARCH.md; cl-exact-name-opinion.log
- Finding type
- historical_record
- Finding
- No qualifying hull-specific asbestos survey, abatement record, product identification, or exposure finding was located in the bounded official-source research recorded in this batch. Ship-specific asbestos documentation remains unknown. CourtListener could not complete even the first name search because it returned HTTP 429.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Study period
- 2026-09-24
- Limitations
- This is a research outcome, not proof of asbestos absence. CourtListener hull, broader-name, and docket searches were not run after the throttle; no litigation no-result conclusion is justified. Not an exhaustive archival or legal search.
- Atlas source
- true
- Evidence ID
- ev-usns-american-mariner-05
-
[6]NARA, MSTS and MSC Deck Logs, 1946–81 [other_primary]
- Locator
- Opening description, typical contents and Archives II reference contact
- Finding type
- historical_record
- Finding
- NARA describes MSTS/MSC deck logs spanning 1946–1981 and directs researchers to Archives II. This is a follow-up route for investigating the vessel’s Navy service and operations.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-09-24
- Study period
- 1964–1966 research target
- Limitations
- Guide-level lead only. No American Mariner log, box identifier, repair file, or material inventory was retrieved. The guide does not guarantee this vessel’s logs survive or contain asbestos information.
- Atlas source
- true
- Evidence ID
- ev-usns-american-mariner-06