USS SPROSTON (DD-577)

Evidence

9 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-9).

1. [1]Krik v. Crane Co. et al., No. 1:10-cv-07435 (N.D. Ill. - filed 2010-11-18, Judges Lee then Shah; MDL-875 transferee phase as KRIK v. BP AMERICA, INC., E.D. Pa. No. 2:11-cv-63473); appellate affirmance Krik v. Exxon Mobil Corp., 870 F.3d 669 (7th Cir. 2017). RECAP docs: E.D. Pa. Doc. 116 (Crane Co. disclosure - Expert Opinion of RADM David P. Sargent Jr. USN Ret., filed 11/16/2011, 24 pp.) and N.D. Ill. Doc. 418 (Owens-Illinois exhibit list, filed 10/05/2015) [court_record]

   Locator

   E.D. Pa. 2:11-cv-63473 Doc. 116 pp.18-20 (Sargent report: service table 'Approx. 1954-1957 USS SPROSTON (DD-577) Fireroom FA-BT'; asbestos-opinion passages); N.D. Ill. 1:10-cv-07435 Doc. 418 exhibit list (OI 1038-1039, Trial Tr. 1714); Krik v. Exxon Mobil Corp., 870 F.3d 669 (7th Cir. 2017); pretrial rulings Krik v. Crane Co., 71 F. Supp. 3d 784 and 76 F. Supp. 3d 747 (N.D. Ill. 2014)

   Finding type

   litigation_documented

   Finding

   Asbestos litigation record naming this hull: plaintiff Charles Krik (USN 1954-c.1970; lung cancer) alleged asbestos exposure from removing Owens-Illinois insulation aboard Navy vessels plus two weeks' refinery heater work. His deposition service summary - as recited in Crane Co.'s RADM Sargent expert report (E.D. Pa. Doc. 116) - placed him aboard USS SPROSTON (DD-577) approximately 1954-1957 in the fireroom, advancing Fireman Apprentice (FA) toward Boilerman (BT). Sargent opined that Krik's assignment 'serving in the fire rooms in USS SPROSTON (DD-577) and USS JENKINS (DD-447) placed him in a working environment in close proximity to many piping systems and other propulsion equipment that the Navy specified be insulated with asbestos containing thermal insulation.' At the April-May 2015 jury trial before Judge Shah, Owens-Illinois's exhibit list (N.D. Ill. Doc. 418) included ship-specific exhibits 'Synopsis of Machinery and Hull Data - USS Sproston' (OI 1038, admitted/discussed Trial Tr. 1714, 29 Apr 2015) and 'USS Sproston Identification of Equipment & Manufactures' (OI 1039, Tr. 1714). DISPOSITION: after the 7-day trial the jury found cigarette smoking (1.5 packs/day x 30 years) the sole cause of Krik's cancer - defense verdict for Owens-Illinois and Exxon Mobil; the Seventh Circuit affirmed in all respects (870 F.3d 669), rejecting Krik's appeal on expert-exclusion and juror-investigation grounds.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-27

   Study period

   1954-1957 (alleged aboard); 2010-2017 (litigation)

   Population

   Charles Krik (USN ~1954-1970; USS Sproston fireroom FA-BT ~1954-57; USS Jenkins fireroom ~1957-58; Bryce Canyon/Vulcan boiler shops; later recruiter - lung cancer; 30-year smoking history)

   Limitations

   Trial-stage record, not an exposure finding: the shipboard-exposure claim exists here as plaintiff's own service testimony recited by a DEFENSE expert (Sargent, for Crane Co.) plus defense exhibits - the jury never found exposure aboard Sproston; it found cigarettes the sole cause, and the 7th Cir. affirmance rested on expert/juror issues, not exposure. No adjudicated finding of asbestos presence or exposure aboard this hull. Sargent's asbestos nexus is a Navy-specification inference ('specified be insulated'), not a hull materials survey. Krik's service also covered USS Jenkins, Bryce Canyon, Vulcan and shore/yard duty - Sproston was one of several alleged exposure sources, and the verdict foreclosed his causation theory entirely. Trial-exhibit content (OI 1038/1039 machinery data) exists but was not retrieved - titles establish ship-specific machinery documentation was in evidence.

   Atlas source

   true

   Evidence ID

   ev-uss-sproston-dd577-01

2. [2]Krik v. Crane Co. (N.D. Ill. 1:10-cv-07435) Doc. 418 Owens-Illinois trial exhibit list + E.D. Pa. 2:11-cv-63473 Doc. 116 Sargent expert report [court_record]

   Locator

   N.D. Ill. Doc. 418 (exhibit list entries OI 1038-1039, Trial Tr. 1714); E.D. Pa. Doc. 116 p.19-20; 870 F.3d 669 (Owens-Illinois insulation-removal allegation)

   Finding type

   litigation_product_id

   Finding

   Product/equipment-identification element of the Krik record: the defendants' trial exhibits for this hull included 'USS Sproston Identification of Equipment & Manufactures' (OI 1039) - a ship-specific equipment-manufacturer identification document - and 'Synopsis of Machinery and Hull Data - USS Sproston' (OI 1038). The broader case alleged exposure to Owens-Illinois asbestos insulation (Kaylo-line insulation removal aboard Navy vessels, per the 7th Cir. recital) and Crane Co. was a named defendant filing the Sargent expert disclosure; Sargent's opinion ties fireroom work aboard DD-577 to Navy-specified asbestos-containing thermal insulation on piping and propulsion equipment. Fletcher-class machinery was 4 Babcock & Wilcox boilers and 2 GE geared steam-turbine sets (NavSource hull data) - consistent with boiler/turbine product lines litigated aboard this hull.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-27

   Study period

   1954-1957 (alleged exposure); 2011-2015 (disclosure/exhibits)

   Population

   Charles Krik (fireroom FA-BT, USS Sproston ~1954-57)

   Limitations

   Trial-exhibit titles only - the contents of OI 1038/1039 (which manufacturers/equipment were identified for Sproston) were not retrieved; the equipment-ID work product exists but is unsummarized here. Defendant's-exhibit provenance (Owens-Illinois list) means these were trial exhibits, not plaintiff-alleged product findings. No adjudicated product finding against any manufacturer aboard this hull - defense verdict.

   Atlas source

   true

   Evidence ID

   ev-uss-sproston-dd577-02

3. [3]DANFS, Sproston II (DD-577) (specifications block, full service narrative, striking/sale; verbatim hazegray.org transcription via Wayback capture 2024-09-09 - live NHHC page serves 404, hazegray.org unreachable direct) [nhhc_danfs]

   Locator

   DANFS entry 'DD-577, Sproston II', specifications block + full service narrative

   Finding type

   vessel_history

   Finding

   DANFS record for this hull: laid down 1 April 1942 by Consolidated Steel Co., Orange, Tex.; launched 31 August 1942 (sponsor Mrs. Aline G. Darst); commissioned 19 May 1943, Comdr. Fred R. Stickney. Shakedown off Cuba; transited Panama Canal 4 November 1943; San Francisco, Pearl Harbor; entered Kuluk Bay, Adak 1 December - DesRon 49, TF 94. Bombarded Kurabu Point, Paramushiro, Kurils 4 February 1944; Matsuwa Island pre-dawn bombardment 10 June; Kurabu Zaki airfield 26 June. Departed Adak 8 August for two-week San Francisco stay, then South Pacific via Pearl Harbor, Eniwetok, Manus; October assigned TU 79.11.2 screening TG 79.2 transports off Dulag, Leyte. Splashed first enemy plane 25 October (with Hale DD-642 and Pickens APA-190); downed two 'Zekes' in San Pedro Bay 18 November. Lingayen patrol December 1944-January 1945 (DANFS text reads 'early January 1946' - transcription error, see gaps); another plane 8 January; Zambales landings support; entered Subic Bay 29 January - believed first U.S. warship to enter since Japanese occupation began. Escort duty; Guam 25 February-1 March; Milne Bay; Leyte Gulf 13 March. Okinawa picket duty from 26 March (relieved Heywood L. Edwards DD-663); call fire on Makiminato Saki 2 April; near-miss bomb damage to sonar and main battery computer 4 April (no casualties; Guam repair, back on station within two weeks); plane kills 12 May off Hagushi Beach, 28 May (with Wadsworth DD-576), 29 May (with Bradford DD-545); rescued Gilbert Island (CVE-107) pilot 6 June. On 28 June, answering Antares (AKS-3) under submarine attack between Saipan and Eniwetok: sonar contact at 1,000 yards, unsuccessful ram attempt on a fleet-type submarine, full depth-charge pattern; evaded a torpedo along her port side; then sank a midget submarine with a main-battery salvo - LCI-585, LSM-196, LSM-197, Parks (DE-165), Levy (DE-162), Roberts (DE-749) joined the search. Arrived San Francisco 14 July 1945 for yard overhaul and inactivation; moved to San Diego mid-December; decommissioned 18 January 1946. Recommissioned as DDE-577 15 September 1950; departed San Diego early 1951 for Eniwetok to participate in the Atomic Bomb Test (see ev-05 for the DoD GREENHOUSE record); new home port Pearl Harbor; DesRon 25. Early 1952 shipyard overhaul; sailed 2 June for the Far East; 15 June assigned TF 77 off Korea's east coast (Hungnam-Simpo area) for six months, interleaved with Taiwan Patrol; returned Pearl Harbor 5 December 1952; nine Far East cruises over the next decade; Battle Efficiency E 1958 and 1961. Redesignated DD-577 in 1962; five-month Pearl Harbor Navy Yard overhaul from March 1965. Vietnam: departed 27 December 1965 with Ranger (CVA-61), England (DLG-22), Carpenter (DD-825); 'Dixie Station' 16 January-13 February 1966 (rescue/ASW screen; naval gunfire support off 'Phnoc Hui Bay' [sic - DANFS spelling] 18 January); 'Yankee Station' from 19 January; trawler surveillance 5-11 February (observed Soviet AGI Gidrofon); II Corps naval gunfire support 1-20 March (40 missions for 1st Cavalry Division and RVN Marines; repulse of battalion-strength VC attack near Tam Quan 9 March); Yokosuka 21 March; second Dixie/Yankee tour with Ranger from 5 April; detached 4 May (Hong Kong, Subic, Yokosuka); Pearl Harbor for upkeep and Apollo spacecraft recovery crane installation; on station off Kwajalein 25 August 1966 as the Apollo spacecraft was recovered by Hornet (CVS-12). January-February 1967 local operations; sailed for Yokosuka 6 March; Yankee Station April; Operation Sea Lion and gunfire support to 14 May; 2.5 months as Hancock (CVA-19) escort/plane guard; trawler surveillance of AGIs Deflektor, Barograf, Gidrofon; departed Vietnam 4 August with Carpenter for Sydney ASW exercise with British and New Zealand units; returned Pearl Harbor 11 September (~40,000 miles); ordered to Guam for yard availability late December 1967; yard work completed mid-March 1968; sailed for the west coast 29 July; notified of decommissioning at San Diego; returned Pearl Harbor late August; decommissioned 30 September 1968; struck from the Navy list 10 October 1968 (DANFS reading; NavSource/NavalCoverMuseum read 1 October - see gaps); sold to Chou's Iron and Steel Co., Taipei, Taiwan, for scrap. Five battle stars WWII, one Korean, three Vietnamese.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-27

   Study period

   1942-1971

   Population

   Consolidated Steel Orange TX construction trades 1942-43; wartime crew (DANFS spec complement 329) 1943-46; postwar crew 1950-68; shipyard workforces at documented availabilities

   Limitations

   DANFS documents identity, construction, service history, and disposition - not materials or asbestos content. Transcription cited via Wayback capture of hazegray.org because the live NHHC page returns 404 and hazegray.org is unreachable direct. DANFS text reads 'early January 1946' for the Lingayen patrol (typo for 1945) and 'struck ... 10 October 1968' (vs 1 October in NavSource/NavalCoverMuseum) - conflicts in gaps. 'The Atomic Bomb Test' is not operation-named in DANFS; GREENHOUSE identification rests on the DoD NTPR reports (ev-05).

   Atlas source

   true

   Evidence ID

   ev-uss-sproston-dd577-03

4. [4]NavSource Naval History, Destroyer Photo Index DD-577/DDE-577 USS Sproston (operational/building data + photo-caption chronology; via Wayback capture 2024-05-25 - navsource.org direct fetch refused) + shipbuildinghistory.com/Colton Consolidated Steel Orange TX build list + NHHC Online Library photo NH 107266 (ibiblio mirror) [other_primary]

   Locator

   NavSource DD-577 page (Wayback 2024-05-25): building-data block, fate line, photo captions 0557723/0557724/0557725 and 80-G-428265 caption; shipbuildinghistory.com/shipyards/emergencylarge/consolidatedorange.htm row 202; ibiblio NHHC Online Library i07266c.htm (NH 107266)

   Finding type

   historical_record

   Finding

   Build, yard-period, and disposal detail beyond DANFS: NavSource gives call sign NAVU, tactical voice call 'BRASS PLATE' (circa 1968), class Fletcher as built (displacement 2,924 t full; 376'5" x 39'7" x 13'9" max; 5x5"/38AA, 6x40mm, 10/11x20mm, 10x21" tt 2x5; machinery 60,000 shp General Electric geared turbines, 2 screws; 38 kt; crew 273), and confirms laid down Orange TX 1 April 1942, launched 31 August 1942, commissioned 19 May 1943; reclassified DDE-577 26 March 1949 (while in reserve), reverted DD-577 30 June 1962; decommissioned 30 September 1968; stricken 1 October 1968; sold 15 December 1971 to Chou's Iron & Steel, Taiwan, broken up for scrap. The NavSource DD-498 record (see batch-3480 uss-philip-dd498) corroborates the 15 December 1971 Chou's Iron & Steel sale date and adds that Sproston and Philip were under tandem tow to Kaohsiung for scrapping when Philip sank in a storm 2 February 1972 at 18deg58'N 169deg41'E - Sproston completed the tow and was broken up in Taiwan. The Colton-derived Consolidated Orange build list gives yard hull 202, contract dated 9 September 1940, keel 1-Apr-42, launch 31-Aug-42, delivery 19-May-43 - 152 days on the ways, 261 fitting out, 413 total - disposition 'scrapped 1971.' NavSource photo captions document: a Todd Ship floating drydock at Algiers, LA on 17 May 1943 (post-commissioning bottom painting at Galveston and mechanical failures; 'the first of the new Fletchers to be docked on the Mississippi,' then Gitmo shakedown); 'rip-out phase of DDE conversion at Mare Island, 13 May 1949' in two photos (with Walker DD-517 moored outboard, removed pilothouses on the pier; Vallejo Naval & Historical Museum files); a June 1950 San Diego mothball-fleet photo (NARA 80-G-428265) with Nicholas (DDE-449), O'Bannon (DDE-450), Walker (DDE-517), Killen (DD-593) - 'returned to Mothballs after being converted to the DDE ASW configuration ... 2-5"/38cal, 5 torpedo tubes, Mk-15 ASW projector'; five views alongside USS California 25 June 1945 (NARA 80G374228-374234); Pearl Harbor April/May 1968 photos. NHHC Online Library photo NH 107266 (official USN photo, ibiblio mirror verified): 'Converted for anti-submarine warfare in 1949-1950 and redesignated DDE-577, Sproston reverted to DD-577 on 30 June 1962,' shown alongside Coral Sea (CVA-43) in Hawaiian waters 9 January 1965. Commanding-officer roster 1943-1968 from NavSource (Stickney through Maxwell).

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-27

   Study period

   1940-1971

   Population

   Consolidated Steel Orange construction trades 1942-43; Todd Algiers yard workers May 1943; Mare Island conversion workforce 1949-50; Pearl Harbor NSY overhaul workforce 1965; Guam yard-availability workforce 1967-68; crew 1943-1946, 1950-1968

   Limitations

   NavSource is a volunteer photographic archive, not an official repository - used to corroborate yard-period events, dates, and machinery attribution; photo captions document presence at yards, not work scope or materials. Stricken date conflicts with DANFS (1 vs 10 October 1968) and sale date with Wikipedia's 15 September 1971 - conflicts in gaps. The Todd Algiers 1943 docking and Mare Island 1949 rip-out are documented events; any asbestos disturbance scope within them is unverified inference.

   Atlas source

   true

   Evidence ID

   ev-uss-sproston-dd577-04

5. [5]Defense Nuclear Agency (as Executive Agency for DoD), DNA 6034F, 'OPERATION GREENHOUSE-1951' Final Report, Nuclear Test Personnel Review, 15 June 1983 (Kaman Tempo; via govinfo GPO) + DNA-TR-82-15, 'Analysis of Radiation Exposure for Naval Personnel at Operation GREENHOUSE' (DTRA NTPR; via Wayback capture of dtra.mil) [other_primary]

   Locator

   DNA 6034F: abstract (assigned exposures 0.334-1.1 R incl. Sproston), Table of Contents (TU 3.3.2 USS Sproston chapter p.198), ship unit history and shot-by-shot log narrative (pp.198-199), PPG presence table (8 March-27 May 1951), radsafe-training passage; DNA-TR-82-15: Figs. 2-15 to 2-19 and Tables 2-9/2-10 (USS SPROSTON), Section 2.5 ship narrative, Section 6 dose summary

   Finding type

   gov_survey

   Finding

   DoD dose-reconstruction record naming this hull: Sproston (DDE-577) was one of seven naval vessels whose crews' radiation doses were reconstructed for Operation GREENHOUSE, the four-detonation atmospheric test series at Enewetak Atoll (shots DOG 8 April, EASY 21 April, GEORGE 9 May, ITEM 25 May 1951; Joint Task Force 3; ~10,500 DOD participants). Per DNA 6034F: Sproston arrived Enewetak 8 March 1951 and departed 27 May for Pearl Harbor, serving in TU 3.3.2 (Convoy and Escort - escorted USS Curtiss AV-4 carrying device components) and TU 3.3.4 (Surface Patrol - antisubmarine/security patrol around the atoll for all four shots; also Project 8.3 radarscope photography under TG 3.1). Fallout encounters documented from log entries: DOG - fallout 2,500 yards southwest of Enewetak Island between 1230-1300, decontamination begun 1600; EASY - 0.01275 R/hr measured at 2300 on station, normal by 1600 next day; GEORGE - not exposed; ITEM - minor fallout 1900-2300. Ten crew members wore film badges; in 1951 Navy medical authorities assigned most non-badged Sproston crewmembers a dose of 1.000 R for fallout exposure - the six ships' assigned exposures ranged from 0.334 R (USS LST-859) to 1.1 R (USS Cabildo LSD-16 and USS Sproston, the highest). DNA-TR-82-15 reconstructs per-shot shipboard intensities and crew doses for Sproston in dedicated figures and tables (patrol positions, ship intensity following DOG/EASY/ITEM, film-badge dose comparisons); its abstract reports average shipboard doses across the seven vessels of 0.13-1.14 rem. Both commanding officers of Sproston and Walker complained their crews - largely reservists recalled in September 1950 - received little radsafe training for the operation.

   Verification

   verified

   Role

   context

   Documentation level

   ship_specific

   Accessed

   2026-09-27

   Study period

   1951 (exposure); 1983/1982-84 (reports)

   Population

   USS Sproston crew, March-May 1951 (largely recalled reservists; ~10 badged, remainder assigned fallout doses)

   Limitations

   This is an IONIZING RADIATION exposure record, not asbestos documentation - it establishes no asbestos presence, quantity, or exposure aboard this hull and must not be cited as such. It is carried as the hull's only located ship-specific government exposure record (the 'atomic veteran' category) and corroborates DANFS's 'Atomic Bomb Test' participation. Per-shot dates are the report's local-time dates (MHT/UTC differ by a day in some secondary sources). DNA-TR-82-15's per-ship mean dose value for Sproston could not be cleanly extracted from the scanned OCR table; only the report's range and the DNA 6034F assigned-dose figures are carried.

   Atlas source

   true

   Evidence ID

   ev-uss-sproston-dd577-05

6. [6]DANFS specifications block (Fletcher class; 35.2 kt) + Atlas fletcher-class class profile (class-c worktree, 2026-09-16) + Atlas shipyard dataset records (mare-island-naval-shipyard, pearl-harbor-naval-shipyard, todd-shipyards) + NARA RG19 General Information Books archival lead [other_primary]

   Locator

   DANFS specifications block; fletcher-class.class.json (building_years, propulsion_summary, class_notes); shipyards.json records 'mare-island-naval-shipyard', 'pearl-harbor-naval-shipyard', 'todd-shipyards'; NARA RG19 lead

   Finding type

   asbestos_application

   Finding

   Era/yard inference: a WWII Fletcher-class destroyer built 1942-43 with a four-boiler/60,000-shp steam plant would have carried period-standard asbestos boiler and steam-line insulation, turbine lagging, gaskets, packing, fireproofing, and deck coverings. The Atlas Fletcher-class profile documents the design regime across 175 hulls built 1941-44. The builder (Consolidated Steel Corp., Orange, Texas) is NOT among the 37 yards in the Atlas shipyard dataset, so no yard-level asbestos documentation attaches to the construction phase. Documented post-construction yard events on this hull do attach to dataset yards: Mare Island Naval Shipyard (1949-50 DDE conversion rip-out, photographed 13 May 1949), Pearl Harbor Naval Shipyard (five-month overhaul from March 1965, DANFS), and a Todd Ship floating drydock at Algiers, LA (17 May 1943, NavSource caption). Unnamed yards cover the July 1945 San Francisco overhaul, the early-1952 'shipyard' overhaul, and the December 1967-March 1968 Guam yard availability. NARA RG19 'General Information Books' per-vessel material specifications are an unretrieved archival lead for hull-level specs.

   Verification

   inferred

   Role

   supporting

   Documentation level

   class_or_era

   Accessed

   2026-09-27

   Study period

   1942-1971

   Population

   Consolidated Steel Orange construction trades 1942-43; Mare Island, Pearl Harbor NSY, Todd Algiers, and Guam yard workforces; crew 1943-1946, 1950-1968

   Limitations

   Class/era and yard-level inference only - NOT an independent ship-specific finding; the ship-specific findings for this hull are ev-01/ev-02 (Krik litigation record). Yard dataset coverage documents the yards, not this hull's material state during its availabilities. Does not quantify material aboard or establish any individual's exposure.

   Atlas source

   true

   Evidence ID

   ev-uss-sproston-dd577-06

7. [7]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]

   Locator

   GAO product page HRD-80-2

   Finding type

   gov_survey

   Finding

   GAO documented that the Navy used asbestos insulation extensively aboard ships and did not begin substituting alternative insulation materials until the early 1970s - placing DD-577's construction (1942-43), both commissioned service periods (1943-46, 1950-68), the 1949-50 DDE conversion, all documented availabilities, and her 1971 sale for scrap inside the documented asbestos-use era.

   Verification

   verified

   Role

   context

   Documentation level

   class_or_era

   Accessed

   2026-09-27

   Study period

   1979

   Population

   Navy shipyard workers; asbestos program review

   Limitations

   Program-level documentation; supports era context only, not any fact specific to this hull. Full report text not retrieved (gao.gov blocks automated fetch, HTTP 403) - content via product-page description.

   Atlas source

   true

   Evidence ID

   ev-uss-sproston-dd577-07

8. [8]CourtListener API v4 authenticated sweeps via cl-auth-search.py, 2026-09-27: 'USS Sproston' type=o = 0 hits; 'USS Sproston' type=r = 3 dockets; 'U.S.S. Sproston' o+r = 0; 'aboard the Sproston' o+r = 0; 'DD-577' type=o = 0; 'DD-577' type=r = 8 dockets; 'Sproston' 'DD-577' o=0, r=2; 'Sproston' type=o = 34 opinions; type=rd full-text document search 'USS Sproston' = 4 filings (3 Krik docs + 1 QTC complaint); follow-on fetches: Krik docs 116/418 full text, Krik opinion cluster (17 hits), 870 F.3d 669 opinion text [court_record]

   Locator

   cl-auth-search.py results for 11 base variants + rd document search + 2 doc pulls + opinion cluster fetch (see search_ledger sl-09 through sl-14)

   Finding type

   litigation_documented

   Finding

   Sweep result: ONE qualifying asbestos-litigation cluster names this hull - the Charles Krik case pair (N.D. Ill. 1:10-cv-07435 + MDL-875 remand E.D. Pa. 2:11-cv-63473, affirmed 7th Cir. 870 F.3d 669), documented at ev-01/ev-02 (trial-stage naming; defense verdict). All other hits classified non-qualifying: (a) 'USS Sproston' r-hit on USA v. QTC Medical Services (C.D. Cal. 2:14-cv-08961, False Claims Act qui-tam - 'USS Sproston' appears inside the 332-page first amended complaint, likely a veteran-file reference; non-asbestos = OTHER LITIGATION/name-mention); (b) six further 'DD-577' docket collisions (Mass. v. Libertad receivables; Intellectual Ventures v. Motorola patent; Dumais FTCA; Pickett prisoner civil rights; Ariz. DES v. Wormuth APA; Fagan v. Honeywell) - docket/document-number collisions, none naming the vessel; (c) all 34 'Sproston' opinion hits are surname collisions (State v. Sproston, Sproston v. Quaker Oats, estate/divorce/probate matters) - none ship- or asbestos-related.

   Verification

   verified

   Role

   context

   Documentation level

   ship_specific

   Accessed

   2026-09-27

   Study period

   2026-09-27 (sweep)

   Limitations

   Sweep covers CourtListener's indexed opinion and RECAP corpora only; unindexed dockets, NYCAL/state-court filings, and unreported settlements are outside scope. 'Sproston' is a low-collision surface (uncommon surname; DD-173 is the only other hull and pre-dates asbestos litigation). The Krik naming is trial-stage allegation ending in defense verdict - see ev-01 limitations.

   Atlas source

   true

   Evidence ID

   ev-uss-sproston-dd577-08

9. [9]Batch-3549 search ledger (this record): DANFS (hazegray via Wayback); NavSource (Wayback); Colton/shipbuildinghistory Consolidated Orange build list; NHHC Online Library (ibiblio); destroyerhistory.org; DNA 6034F + DNA-TR-82-15 (govinfo/DTRA via Wayback); NVR (scope-limited); NARA RG19/RG24 (not digitized); CourtListener API v4 opinion + docket sweeps; law-firm/aggregator ship pages (excluded per sourcing rules) [other_primary]

   Locator

   search_ledger rows sl-uss-sproston-dd577-01 through -14

   Finding type

   historical_record

   Finding

   No hull-specific asbestos survey, abatement record, materials inventory, or hazmat disclosure located for DD-577 in the public sources searched (see search_ledger). The ship was stricken October 1968 and sold to a Taiwan scrapper in 1971 - before modern asbestos documentation practice - and never became a museum, so the museum-disclosure channel that produced ship-specific records for preserved hulls does not exist here. The ship IS named in qualifying asbestos litigation (Krik v. Crane Co., ev-01/ev-02 - trial-stage allegation, defense verdict affirmed) but no affirmative adjudicated exposure finding exists. The hull's only other ship-specific government exposure record is radiological (ev-05, Operation GREENHOUSE 1951).

   Verification

   verified

   Role

   negative_finding

   Documentation level

   ship_specific

   Accessed

   2026-09-27

   Study period

   2026-09-27

   Limitations

   Absence of a located public record does not prove absence of asbestos aboard - era-standard applications are documented at class/era level (ev-06, ev-07). The hull no longer exists (scrapped Taiwan 1971-72), so present-day ACM status is moot.

   Atlas source

   true

   Evidence ID

   ev-uss-sproston-dd577-09