Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
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[1]DANFS, Magnet II (AM-260) (builder, dates, full Atlantic service narrative, lend-lease transfer, striking; verbatim transcription - live NHHC page returns 404; hazegray.org canonical offline; HyperWar DANFS mirror lacks AM-260; Wayback capture of official page exists 2025-01-25) [nhhc_danfs]
- Locator
- DANFS entry 'Magnet' (II), specifications block + full service narrative
- Finding type
- vessel_history
- Finding
- DANFS record for this hull: Admirable-class minesweeper (dp. 625; 184'6" x 33' x 9'9"; s. 15 k.; cpl. 104; 1 3", 4 40mm) - 'The second Magnet (AM-260) was laid down by American Shipbuilding Co., Lorain, Ohio, 13 March 1943; launched 5 June 1943; sponsored by Mrs. John J. Boland; and commissioned 10 March 1944, Lt. H. A. Babione in command.' Commissioned in the 9th Naval District; steamed down the Mississippi River to Norfolk, reporting 17 April 1944; shakedown Chesapeake Bay; joined Mine Division 31; nine months out of Recife, Brazil sweeping South American shipping channels, escorting West Indies convoys, harbor patrol, antisubmarine training; detached from South Atlantic Forces 10 March 1945, assigned to TG 23.2 at Miami; school ship until 28 June; Norfolk; brief overhaul; returned to Miami 18 August; decommissioned 28 August 1945 and transferred to the Nationalist Chinese Government under lend-lease the same day; redelivered outright under the Military Assistance Program 7 February 1948; struck from the Navy list 12 March 1948.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1943-1948
- Population
- American Shipbuilding Co. construction trades, Lorain 1943-44; wartime crew (design complement 104); Mine Division 31 personnel; Republic of China Navy crew 1945-1958
- Limitations
- DANFS documents service history and characteristics, not materials or asbestos content. The entry prints the ROC name as 'Yung Shun (MSF-46)' - contradicted by ROC-side records identifying this hull as Yung Ning (永寧) and Yung Shun as ex-USS Logic AM-258 (see ev-uss-magnet-am260-07). DANFS also gives no decommissioning-location facility detail beyond 'Miami.' Mirror transcription cited because the live NHHC page returns 404 and the HyperWar DANFS mirror lacks AM-260.
- Atlas source
- true
- Evidence ID
- ev-uss-magnet-am260-01
-
[2]NavSource Online, Mine Warfare Vessel Photo Archive: Magnet (AM 260) - class data, specifications, chronology, commanding officer listing [other_primary]
- Locator
- NavSource hull page 11/02260, specification block + chronology + CO listing
- Finding type
- historical_record
- Finding
- NavSource specification block and chronology for this hull: call sign November-Golf-Tango-Whiskey; laid down 13 March 1943 by American Shipbuilding Co., Lorain, OH; launched 5 June 1943; commissioned USS Magnet (AM 260) 10 March 1944; decommissioned 28 August 1945 at Miami, FL, transferred to the Republic of China; transferred outright 7 February 1948; struck from the Naval Register 12 March 1948; 'Removed from service in 1963 and believed scrapped.' Specifications: displacement 945 t.(fl); 184'6" x 33' x 9'9"; 14.8 kts.; complement 104; armament one 3"/50 dual-purpose mount, one twin 40mm mount, six single 20mm mounts, one hedgehog, four K-guns, two depth-charge tracks; propulsion two 1,710shp Cooper Bessemer GSB-8 diesel engines, National Supply Co. single reduction gear, two shafts - diesel, no boilers and no steam distribution piping. Sole CO listed: LT Herbert Albert Babione, USNR (10 Mar 1944 - 28 Aug 1945).
- Verification
- partial
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1943-1963
- Population
- Wartime crew (context); ROC crew 1945-1958 (context)
- Limitations
- NavSource is a volunteer-run archive reproducing official characteristics and NVR data; the propulsion row is not independently confirmed against a primary BuShips specification sheet - the Admirable-class builder/engine breakdown places the Lorain block (incl. AM-255-266) in the Cooper Bessemer GSB-8 / National Supply group, matching same-yard sisters, while Wikipedia's ship infobox gives class-generic ALCO 539/Farrel-Birmingham and HyperWar reads 'diesel-electric, 1,800 h.p.' (conflict logged in gaps). NavSource repeats DANFS's 'Yung Shun (MSF 46)' ROC-name error and prints 'removed from service 1963' - contradicted by ROC-side records of the 1958 Green Island loss (see ev-08). Contains no materials or asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-magnet-am260-02
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[3]Encyclopedia of Cleveland History (Case Western Reserve University), 'American Ship Building Co.' - Lorain yard history (Cleveland Shipbuilding 1886; relocated to Lorain 1897; AmShip acquisition 1899; largest Great Lakes shipbuilder by 1952; Lorain yard closed December 1983) + shipbuildinghistory.com AmShip Lorain yard table (hull #835 = Magnet AM 260, delivered Apr-44) [other_primary]
- Locator
- Case Western Reserve Encyclopedia of Cleveland History article; shipbuildinghistory.com/shipyards/large/amshiplorain.htm yard table, hull #835 row
- Finding type
- vessel_history
- Finding
- Builder context: the Lorain yard that built this hull began as Cleveland Shipbuilding (1886), relocated to Lorain in 1897, and was acquired by American Ship Building Co. in 1899, becoming its Lorain Division. AmShip was the largest Great Lakes shipbuilder by 1952; the Lorain yard closed December 1983 and the company entered bankruptcy in 1993. Colton's AmShip Lorain yard table confirms this hull as yard #835 ('Magnet (AM 260)', U.S. Navy minesweeper, 650d/184 ft, delivered Apr-44, 'To China 1948 as Yung Ning, to Taiwan 1949, struck 1963') and places it in the Lorain Admirable block AM-255 through AM-266 with sisters Jubilant, Knave, Lance, Logic, Lucid, Mainstay, Marvel, Measure, Method, Mirth, Nimble.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-09-22
- Study period
- 1886-1995; this hull 1943-44
- Population
- AmShip Lorain construction workforce (context)
- Limitations
- Yard-history context only - establishes the builder's identity, capacity, and wartime role, not materials used aboard this hull. No asbestos-specific finding about the Lorain yard is located in an authoritative source; law-firm content about AmShip asbestos exposure exists but is excluded per source rules. Colton's 'struck 1963' disposition conflicts with the ROC-side 1958 loss (see ev-08).
- Atlas source
- true
- Evidence ID
- ev-uss-magnet-am260-03
-
[4]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2 + indexed report text (gao.gov/assets/hrd-80-2.pdf blocked, HTTP 403)
- Finding type
- gov_survey
- Finding
- GAO's program review of Navy asbestos exposure records the Navy's position that 'all ships contain some asbestos in such components as clutches and electric cables' and that thermal insulation was 'the Navy's major use of asbestos aboard ships.' Era-level confirmation that WWII-built Navy hulls carried asbestos-containing components; for this diesel minesweeper the thermal-insulation pathway is largely absent by design, leaving the small-component uses (cable insulation, gaskets, clutch/brake linings, exhaust lagging) as the era-consistent candidates.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-22
- Study period
- 1979 report; WWII-era construction context
- Population
- Navy personnel and shipyard workers (program context)
- Limitations
- Program-level documentation, not hull-specific; does not name this vessel, class, or builder and establishes no asbestos content, quantity, location, or exposure aboard this hull. gao.gov returns HTTP 403 to automated fetch - content via product-page description and indexed excerpt of the report text (standing issue since batch-01).
- Atlas source
- true
- Evidence ID
- ev-uss-magnet-am260-04
-
[5]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
- Abstract and article, AJIM 11(3):359-373; DVB Circular 21-88-8 / M21-1 text as recited in BVA decisions
- Finding type
- asbestos_application
- Finding
- Peer-reviewed historical study documents that asbestos was used extensively as a fireproofing and insulating material in U.S. shipbuilding during WWII - the era and emergency construction program under which this hull was built at American Shipbuilding Co., Lorain, in 1943. VA adjudication guidance (DVB Circular 21-88-8, carried into M21-1) likewise recites that chrysotile, amosite, and crocidolite 'were used extensively in military ship construction' during WWII.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-22
- Study period
- 1940s era documented; article 1987; circular 1988
- Population
- WWII shipyard workers and ship crews (class context)
- Limitations
- Program/era-level documentation of asbestos use in WWII shipbuilding generally; does not name this vessel, class, or yard and does not establish that asbestos was installed aboard this hull, nor quantity, location, condition, exposure, or causation.
- Atlas source
- true
- Evidence ID
- ev-uss-magnet-am260-05
-
[6]NPS National Historic Landmark nomination (War in the Pacific Ship Study, Federal Agency Nomination), USS Hazard (AM-240), NRHP/NHL 79003712 [nps]
- Locator
- NHL nomination form, sections 7 (Description) and 8 (Significance)
- Finding type
- historical_record
- Finding
- NPS nomination for a sister hull describes the class: 'Admirable class minesweepers were basic minesweepers similar to the British "Bangor" class designed to meet minimum requirements for size, speed, and endurance ... Admirable class minesweepers formed the majority of American minesweepers built during World War II.' It documents USS Hazard (AM-240) as 'one of the best preserved and intact warships remaining from World War II ... a virtual time capsule dating from 1945' - evidence that class-standard WWII construction survives essentially unaltered on at least one sister hull.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-22
- Study period
- nomination c. 1985; construction era 1942-45
- Population
- Class context - no ship-specific population
- Limitations
- Sister-ship record: the nomination does not name AM-260 and contains no asbestos or materials information - it establishes class characteristics and intact-survival context only. Magnet herself was not preserved; she was lost on a reef off Green Island in 1958 and dismantled in place (see ev-08).
- Atlas source
- true
- Evidence ID
- ev-uss-magnet-am260-06
-
[7]navypedia.org ROC Navy YUNG NING-class table + shipbuildinghistory.com AmShip Lorain yard table + Gwulo ROC Navy photo archive image (Yung Ning/Yung Ting/Yung Shun as three distinct hulls) + batch-1230 uss-logic-am258 record [other_primary]
- Locator
- navypedia.org/ships/china/ch_ms_yung_ning.htm (ex-Magnet row); shipbuildinghistory.com amshiplorain.htm hull #835 vs #833; gwulo.com/media/55499 photo caption
- Finding type
- vessel_history
- Finding
- Source conflict resolved: DANFS, NavSource, uboat.net, and NavalCoverMuseum all print this hull's ROC name as 'Yung Shun (MSF-46).' ROC-side records consistently identify ex-USS Magnet (AM-260) as ROCS Yung Ning (永寧), pennant AM-46: navypedia's Yung Ning group table maps ex-Magnet (Lorain, laid 3.1943, launched 5.6.1943, comm 3.1944 // 8.1945 - exact match to this hull's dates) to 永寧 Yung Ning and ex-USS Logic (AM-258) to 永順 Yung Shun; Colton's Lorain yard table independently maps AM-260 to 'Yung Ning' and AM-258 to 'Yung Shun'; a ROC Navy photo-archive image (Gwulo) shows Yung Ning, Yung Ting, and Yung Shun as three distinct hulls. DANFS appears to have grafted the correct pennant (46) onto the wrong name - Yung Shun was Logic's ROC name at pennant AM-44 (see batch-1230 uss-logic-am258 record). Yung Ning carried; 'Yung Shun (MSF-46)' is not adopted for this hull.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1945-1958
- Limitations
- Resolves a name collision inside the four-ship lend-lease group (Lance/Logic/Lucid/Magnet, all Lorain-built, all transferred at Miami 28 Aug 1945). The pennant form itself varies across sources (AM-46 per ROC-side tables; MSF-46 per DANFS/NavSource - likely a later ROC renumbering). No asbestos content in any of these sources.
- Atlas source
- true
- Evidence ID
- ev-uss-magnet-am260-07
-
[8]United Daily News (聯合報, Taiwan) obituary feature on Adm. Liu Ho-chien (劉和謙, d. 2023 - former ROCN Commander-in-Chief and Chief of the General Staff) + zh.wikipedia Liu Ho-chien biography + NTU ROCN veterans page (homepage.ntu.edu.tw/~yingshao/am46yunglin.htm) + navypedia [reputable_press]
- Locator
- UDN vip.udn.com/vip/story/122151/7723577 (Liu Ho-chien obituary feature); zh.wikipedia.org/wiki/劉和謙 ('1958年1月27日任永寧艦艦長時，永寧艦在綠島北部中寮遇颱風觸礁擱淺而報廢'); homepage.ntu.edu.tw/~yingshao/am46yunglin.htm chronology items 24-25
- Finding type
- vessel_history
- Finding
- ROC-era disposition of this hull: as Yung Ning (永寧) she served through the Chinese Civil War and withdrew to Taiwan in 1949. On the night of 26-27 January 1958, carrying American passengers on a visit to Green Island (綠島) off Taitung, she was caught at anchor in the outer roadstead by a storm and driven onto the reef off Zhongliao on the island's north side - a constructive total loss. Her commanding officer, Lt. Liu Ho-chien - later ROCN Commander-in-Chief and Chief of the General Staff - ordered abandon ship and attempted to go down with her (UDN recounts the crew forced him into a boat; the NTU chronology records he shot himself and was severely wounded). All hands and passengers were evacuated. Unsalvageable, Yung Ning was decommissioned and dismantled in place 1 March 1958.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1945-1958
- Population
- ROCS Yung Ning crew and American passengers (evacuated, no fatalities documented); ROC Navy salvage/dismantling workers 1958
- Limitations
- ROC-era record rests on Chinese-language secondary sources (UDN feature, zh.wikipedia biography, NTU veterans page, navypedia) - no official ROC Navy or MND record was located. The stranding date varies (night of 26-27 Jan per NTU chronology; 27 Jan per zh.wikipedia/Newton encyclopedia; 29 Jan per the NTU page header); '26-27 January 1958' is carried. U.S.-side compilations (NavSource 'removed from service 1963, believed scrapped'; Colton 'struck 1963') conflict with the documented 1958 loss - carried in gaps. No asbestos content in any of these sources.
- Atlas source
- true
- Evidence ID
- ev-uss-magnet-am260-08
-
[9]Bowling Green State University, Historical Collections of the Great Lakes: American Ship Building Company and Predecessors records, GLMS-0075 (naval architectural drawings + specifications/contracts series) + NARA record groups (RG 24 deck logs; RG 38 WWII war diaries - sister hull AM-258's diary confirmed at catalog ID 77500818; RG 19 BuShips design records) [other_primary]
- Locator
- BGSU GLMS-0075 resource page; catalog.archives.gov/id/77500818 (sister-hull diary); archives.gov/research/guide-fed-records/groups/024.html, /019.html, /038.html
- Finding type
- historical_record
- Finding
- Archival leads for hull-level material documentation: BGSU holds the American Ship Building Company and Predecessors records (GLMS-0075), whose primary component is naval architectural drawings covering Great Lakes-built vessels including warships, plus a Specifications and Contracts series - a hull-level drawing or specification set for AM-260, if present, could resolve the materials questions the public record does not. At NARA: deck logs for the 1944-45 U.S. service period (RG 24) and a WWII war diary (RG 38) covering commissioning through the lend-lease transfer likely exist - sister hull USS Logic (AM-258)'s war diary is confirmed in the catalog (ID 77500818, microfilm serial 142624) for the identical service period; BuShips design records (RG 19) are the only realistic path to a class materials schedule.
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-09-22
- Study period
- 1943-1945 records
- Limitations
- Finding-aid level confirmation only - the BGSU collection is unindexed to hull in public description (drawings in offsite storage, 72-hour access notice). NARA catalog API returned an HTML shell, not queryable records, in-session (same limitation as batches 1154/1227/1230), and the DPLA API now requires a key, so a Magnet war-diary record could not be individually confirmed - inferred likely from the sister hull's confirmed holding. Nothing in this row is an asbestos finding.
- Atlas source
- true
- Evidence ID
- ev-uss-magnet-am260-09
-
[10]Batch-1232 search ledger (this record): DANFS via losthistory/hazegray mirror (live NHHC 404; HyperWar AM-260 absent); NavSource 02260; uboat.net; shipbuildinghistory AmShip Lorain table; navypedia; ROC-side sources (UDN, zh.wikipedia, NTU veterans page, Gwulo photo archive); NPS NHL nomination; GAO HRD-80-2; Case ECH; BGSU GLMS-0075; shipyards.json cross-check; CourtListener API (throttled) + web index; VA BVA index [other_primary]
- Locator
- search_ledger rows sl-uss-magnet-am260-01 through sl-uss-magnet-am260-12
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, specification, abatement contract, hazmat disclosure, court finding, or docketed asbestos case naming USS Magnet / AM-260 / Yung Ning / Yung Shun was found in the public sources searched (see search_ledger). CourtListener API v4 was rate-limited (HTTP 429 - authenticated 2,800/day quota exhausted by parallel batch traffic) throughout the research window; indirect web-index queries of the CourtListener corpus (site:courtlistener.com 'USS Magnet' / 'AM-260' + asbestos) returned no hits naming this hull - partial coverage only, logged honestly rather than claimed as a clean negative. VA BVA index search returned no decision naming this hull.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 2026-09-22
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - a 1943 combatant hull is era-consistent with asbestos-containing components, and the hull's documented history contains no survey or abatement event that would generate such a record; the 1958 reef loss and in-place dismantling foreclose future in-situ documentation. Does not establish that asbestos is or was not present; does not establish or defeat any claim of exposure or legal eligibility. Litigation coverage is incomplete pending an unthrottled CourtListener pass.
- Atlas source
- true
- Evidence ID
- ev-uss-magnet-am260-10