Union Pacific 4014 Explained

Union Pacific "Big Boy" 4014
Bgcolor:000000
Color:FFFFFF
Powertype:Steam
Designer:Otto Jabelmann
Builder:American Locomotive Company (ALCO)
Serialnumber:69585
Builddate:November 1941
Rebuilddate:July 2016–May 2019
Whytetype:4-8-8-4
Uicclass:(2′D)D2′ h4
Leadingdiameter:360NaN0
Driverdiameter:680NaN0
Trailingdiameter:420NaN0
Minimumcurve:2880NaN0 radius/ 20°
Width:11feet
Height:16feet
Axleload:68150lb
Weightondrivers:545200lb
Locoweight:772250lb
Tenderweight:441500lb
Locotenderweight:1214000lb
Tendertype:25-C
Fueltype:No. 5 fuel oil, originally coal
Fuelcap:Total: 6500usgal
Usable: 6100usgal
Watercap:25000usgal
Consumption:20- of fuel oil per mile
200usgal of water per mile
Sandcap:80000NaN0
Boiler:Fire Tube
Diameterinside:107inches
Lengthinside:220NaN0
Boilerpressure:300lb/in2
Feedwaterheater:Elesco Type T.P. 502 Exhaust Steam Injector
14,000 US gal / hour capacity
Firearea:150 sq ft (grate removed in 2019)
Tubearea:9670NaN0
Fluearea:42180NaN0
Tubesandflues:51850NaN0
Fireboxarea:7040NaN0
Totalsurface:58890NaN0
Superheatertype:Type E
Superheaterarea:24660NaN0
Cylindercount:Four, outside
Cylindersize:24x
Valvegear:Walschaerts
Valvetype:Piston valves
Valvetravel:70NaN0
Valvelap:NaN0NaN0
Valvelead:NaN0NaN0
Maxspeed:70mph in regular service
80mph (maximum recorded)
Poweroutput:8000hp @ Cylinder
NaNhp @ tender drawbar
Tractiveeffort:1382401NaN1
Factorofadhesion:4.02
Trainheating:Steam heat
Locobrakes:Pneumatic, Schedule 8-ET
Trainbrakes:Pneumatic
Safety:Cab signals, PTC
Operator:Union Pacific
Operatorclass:4884-1[1]
Numinclass:15
Nicknames:"LAST OF THE GIANTS"
Locale:Western United States
Deliverydate:December 1941
Firstrundate:December 1941 (revenue service)
May 2019 (excursion service)
Lastrundate:July 21, 1959
Retiredate:December 7, 1961
Restoredate:May 1, 2019
Currentowner:Union Pacific
(Union Pacific Heritage Fleet)
Disposition:Operational
Notes:References:[2] [3] [4]

Union Pacific 4014 is a steam locomotive owned and operated by the Union Pacific (UP) as part of its heritage fleet. It is a four-cylinder simple articulated 4-8-8-4 "Big Boy" type built in 1941 by the American Locomotive Company (ALCO) at its Schenectady Locomotive Works. It was assigned to haul heavy freight trains in the Wasatch mountain range. The locomotive was retired from revenue service in 1959 and was donated to the Railway & Locomotive Historical Society; thereafter, it was displayed in Fairplex at the RailGiants Train Museum in Pomona, California.

In 2013, UP re-acquired the locomotive and launched a restoration project at its Steam Shop in Cheyenne, Wyoming. In May 2019, No. 4014 moved under its own power after sitting dormant for almost six decades, becoming the world's largest operational steam locomotive and the only operating Big Boy locomotive of the eight that remain in existence.[3] It now operates in excursion service for the UP steam program. No. 4014 became the first mainline steam locomotive to be equipped with the positive train control (PTC) system in 2021.

History

Design

The Big Boy class was developed by Union Pacific and built by the American Locomotive Company (ALCO) in the 1940s to handle the 1.14% eastbound ruling grade of Utah's Wasatch Range.[5] A team led by UP's chief mechanical officer Otto Jabelmann adapted the design of the 4-6-6-4 Challenger, enlarging the firebox to about 235x (about 155abbr=onNaNabbr=on), lengthening the boiler, adding four driving wheels, and reducing the diameter of the driving wheels from 69to.[2] [5]

The Big Boy was articulated like the Mallet locomotive design, although without compounding.[6] It was designed for stability at 80mph, allowing for a wide margin of reliability and safety, as steam locomotives normally operated well below that speed in freight service.[7] Peak power was reached around 35mph; optimal tractive effort was maintained up to around 10mph.[7] It is longer than two city buses and weighs more than a Boeing 747.[8]

Revenue service and retirement

ALCO built No. 4014 in November 1941 at a cost of $265,174 ($ in) and delivered it the following month to Union Pacific, which placed it in revenue service.[2] [5] No. 4014 was part of the first group of 20 Big Boys, called 4884–1.[1] Designed to haul 36000NaN0 freight trains over the Wasatch Range, the Big Boys routinely pulled freight trains of up to .[2] During a test on April 2, 1943, No. 4014 pulled 65 freight cars between Ogden, Utah, and Evanston, Wyoming, generating a maximum of 5530hp.[9]

No. 4014's last routine repairs took place in 1956.[10] The locomotive completed its final revenue run on July 21, 1959, just hours before the last revenue run by any Big Boy. It had traveled 1031205miles during its revenue service. Union Pacific retired No. 4014 on December 7, 1961. All of the remaining Big Boys were retired by 1962, when their duties were taken over by diesel locomotives and gas turbine-electric locomotives (GTELs).[11] That same year, Union Pacific donated No. 4014 to the Southern California chapter of the Railway & Locomotive Historical Society in Pomona, California, where it became one of the eight Big Boys preserved around the United States.[12]

Ownership transfer and restoration

In late 2012, Union Pacific officials announced that they intended to obtain a Big Boy locomotive for restoration to operational condition for excursion service.[13] On July 23, 2013, UP announced that the Southern California Chapter of the Railway & Locomotive Historical Society (R&LHS) had agreed to return No. 4014 to UP.[14]

On November 14, 2013, No. 4014 began its journey to the UP Steam Shop in Cheyenne.[15] [16] It was pulled from its display site at the museum, on temporary track, through the adjacent parking lot. On January 26, 2014, No. 4014 was pulled from the Los Angeles County Fairplex to the Covina station on Metrolink trackage by No. 1996, an SD70ACe diesel locomotive painted in Southern Pacific colors.[17] [18] It presently arrived at UP's West Colton Yard in Bloomington, California,[19] where it sat on display until April 28, when it began its journey to Cheyenne.[20] After arriving at the Steam Shop's roundhouse on May 8,[21] No. 4014 sat largely idle for two years while the UP steam crew worked to overhaul No. 844.[22] [23] The Steam Shop also used the time to expand and upgrade its facilities to accommodate a Big Boy.[24]

In August 2016, a month after No. 844's repairs and inspection were complete, UP officials announced that the restoration work of No. 4014 had begun under Heritage Fleet Operations director Ed Dickens.[25] [26] By early 2017, the locomotive had been completely disassembled.[27] Some new parts were fabricated, including the rod brasses, top boiler check valve, and lubricator check valves.[27] The driving wheels were sent to be repaired by the Strasburg Rail Road in Strasburg, Pennsylvania, for crankpin and axle work as well as installing new tires.[28] [29]

The work included one major alteration: converting the coal-burning locomotive to run on No. 5 fuel oil.[7] This was done by replacing the firebox grates with a fire pan and an oil burner.[30] This made No. 4014 the first Big Boy to undergo a coal-to-oil conversion since No. 4005, which ran on oil from 1946 until it was converted back to coal in 1948 due to uneven heating in its large, single-burner firebox.[12] [31] No. 4014's old firebox grates were salvaged and used on the Milwaukee Road 261 steam locomotive.[32]

In March 2018, it was reported that No. 4014 was being reassembled; ten months later, the locomotive's restoration was nearly finished.[33] On February 6, 2019, No. 4014's boiler passed a hydrostatic test and the locomotive was successfully test-fired on April 9.[34] [35] [36] Around 9 p.m. on May 1, 2019, No. 4014 moved under its own power for the first time in almost 60 years.[37] The following evening, the locomotive made its first test run, from Cheyenne to Nunn, Colorado.[38]

Excursion service

Once restored, No. 4014 joined the railroad's never-retired No. 844 steam locomotive in excursion service.[39] [40] It also became the world's largest operational steam locomotive, displacing No. 3985.[41] Additionally, No. 3985's original tender, No. 25-C-311, is connected to No. 4014 to meet the restoration deadline.[42] In January 2020, Union Pacific officials announced that the UP Steam Team would operate just two steam locomotives—Nos. 844 and 4014—and would retire No. 3985, which was in poor mechanical condition.[41] [43]

In May 2019, No. 4014 made its first excursion run amid the celebrations marking 150 years since the completion of the first transcontinental railroad.[29] [44] [45] Following its May 4 christening at the Cheyenne Depot Museum, No. 4014 — doubleheaded with No. 844 — traveled to Ogden, Utah.[45] [46] [47] No. 4014 subsequently made two tours on its own.[48] [49] From July 8 to August 8, it visited the Midwestern United States,[48] including brief stops at Saint Paul Union Depot and the Lake Superior Railroad Museum;[50] [51] it then toured the Southwestern United States from September 27 to November 26.[49]

Due to the COVID-19 pandemic, UP announced in March 2020 that it would cancel that year's steam operations with Nos. 4014 and 844.[52] Excursion operations resumed in August and September 2021 with No. 4014 doing tour stops in Fort Worth and Houston, Texas; New Orleans, Louisiana; North Little Rock, Arkansas; St. Louis, Missouri; and Denver, Colorado.[53]

In May 2022, the Railroading Heritage of Midwest America (RRHMA) in Silvis, Illinois, planned to rebuild No. 4014's original tender, No. 25-C-116, to carry fuel oil instead of coal.[54] Afterwards, it will eventually be reconnected with No. 4014 and the No. 25-C-311 tender will be reconnected to the No. 3985 locomotive.[54] Additionally, UP would donate No. 3985 to the RRHMA.[55] [56] In late July 2022, No. 4014 pulled the Museum Special excursion between Cheyenne and the Denver Union Station to benefit the Union Pacific Railroad Museum.[57] [58] On September 14, 2022, No. 4014 was fired up to move Union Pacific 5511, a 2-10-2 locomotive, from the Cheyenne roundhouse and around the yard for testing, prior to the latter departing Cheyenne for the RRHMA in November 2022.[59] [60]

In June 2023, No. 4014 ran from Cheyenne to Omaha, Nebraska, with the Home Run Express Tour, for display at Charles Schwab Field Omaha on June 15-21 and 24-25.[61] [62] During the return journey to Cheyenne on June 29, No. 4014 banked a stalled freight train up the grade in Blair, Nebraska.[63] Two cab rides on the July 3 journey from Pine Bluffs, Wyoming, to Cheyenne were sold for $9,500 apiece to benefit the Union Pacific Railroad Museum.[64]

In April 2024, plans were announced for No. 4014's first of two tours in 2024.[65] The first tour ran from June 30 to July 26, with stops at the Western Pacific Railroad Museum in Portola, California on July 10,[66] Roseville, California on July 12 and 13, and Ogden, Utah on July 20 and 21.[65]

Positive train control

In December 2018, Union Pacific asked the Federal Railroad Administration (FRA) to exempt UP Nos. 4014 and 844 from federal Positive Train Control (PTC) requirements;[67] in February 2019, the FRA officials responded that such waivers were not needed.[68] No. 4014 became the first mainline steam locomotive to be equipped with positive train control (PTC) in 2021.[69] [70] At the time, the PTC display in No. 4014 utilized the computers and equipment in its helper diesel locomotive No. 4015.[70] [71] In May 2024, PTC equipment for No. 4014 was installed in a cabinet in the tender allowing it to run without assistance of a diesel helper locomotive. To facilitate the additional power demands of the on-board computer equipment, a third dynamo was installed on the locomotive.[72]

See also

External links

Notes and References

  1. Book: Drury, George H.. 2015. Guide to North American Steam Locomotives. 2nd. 319. Kalmbach Media. 978-1-62700-259-2.
  2. August 2014. Union Pacific No. 4014. RailGiants Train Museum. Railway & Locomotive Historical Society, Southern California Chapter. April 30, 2019. https://web.archive.org/web/20160730012718/http://railgiants.org/docs/UP-4014-Information.pdf. July 30, 2016.
  3. Big Boy No. 4014. Union Pacific. May 4, 2019. https://web.archive.org/web/20160830102645/https://www.uprr.com/newsinfo/attachments/media_kit/steam/4014_factsheet.pdf. August 30, 2016.
  4. Book: 1950–52 Locomotive Cyclopedia of American Practice. 1950 . C. B. Peck. Simmons-Boardman. New York. 522–523.
  5. Web site: Glischinski. Steve. August 21, 2013. Big Boy story began in 1940. Trains. Kalmbach Media. October 9, 2022. https://web.archive.org/web/20211025165531/https://www.trains.com/trn/railroads/locomotives/big-boy-story-began-in-1940/. October 25, 2021.
  6. Book: Morrison, Tom. 2019. The American Steam Locomotive in the Twentieth Century. 1st. 533–534. McFarland & Company. 978-1-4766-6582-5.
  7. Web site: UP: A return to steam for Big Boy 4014. Vantuono. William C.. July 28, 2013. Railway Age. Simmons-Boardman Publishing. https://web.archive.org/web/20190428230253/https://www.railwayage.com/freight/class-i/up-a-return-to-steam-for-big-boy-4014/. April 28, 2019. April 28, 2019.
  8. News: Gruver. Mead. May 8, 2019. Refurbished 'Big Boy' locomotive weighs more than a Boeing 747. Associated Press. USA Today. https://web.archive.org/web/20190608022753/https://www.usatoday.com/story/travel/news/2019/05/08/union-pacific-big-boy-locomotive-refurbished-transcontinental-railroad-anniversary/1139662001/. June 8, 2019. June 12, 2019.
  9. Book: Huddleston, Eugene L.. 2001. World's Greatest Steam Locomotives: C&O 2-6-6-6, Virginian 2-6-6-6, N&W 2-6-6-4, UP 4-8-8-4. 1st. 71–73. TLC Publishing. 1-883089-60-3. registration.
  10. Web site: Big Wheels Not Yet Turnin'. Community Ties. Union Pacific. August 15, 2013. May 5, 2019. https://web.archive.org/web/20171210071938/https://www.up.com/aboutup/community/community_ties/0815_4014.htm. December 10, 2017.
  11. Book: Klein, Maury. 2006. Union Pacific: Volume II, 1894-1969. 2nd. 479. University of Minnesota Press. 978-0-8166-4460-5.
  12. Web site: Wrinn. Jim. February 15, 2018. Where to find Big Boy locomotives. Trains. Kalmbach Media. June 12, 2019. https://web.archive.org/web/20180928212013/https://trn.trains.com/railroads/railroad-history/2018/02/where-to-find-famous-locomotives. September 28, 2018.
  13. Web site: Union Pacific studying Big Boy restoration project. Trains. Kalmbach Media. December 7, 2012. July 10, 2023. https://web.archive.org/web/20230710222036/https://www.trains.com/trn/news-reviews/news-wire/union-pacific-looking-to-restore-big-boy-for-excursion-service/. July 10, 2023.
  14. Union Pacific Railroad Acquires Big Boy Locomotive No. 4014. Union Pacific. July 23, 2013. April 30, 2019. https://web.archive.org/web/20180624110355/https://www.uprr.com/newsinfo/releases/heritage_and_steam/2013/0723_4014.shtml. June 24, 2018.
  15. Web site: November 14, 2013. Big Boy No. 4014 Prepares to Leave Pomona. Community Ties. Union Pacific. May 5, 2019. https://web.archive.org/web/20170530021727/http://www.up.com/aboutup/community/community_ties/1114_4014update.htm. May 30, 2017.
  16. News: Allen. David. November 14, 2013. Big Boy lumbers to life at Pomona fairgrounds. Inland Valley Daily Bulletin. June 7, 2019. https://web.archive.org/web/20190607162532/https://www.dailybulletin.com/2013/11/14/big-boy-lumbers-to-life-at-pomona-fairgrounds/. June 7, 2019.
  17. News: Day. Brian. January 26, 2014. Gigantic, 73-year-old steam locomotive pays visit to Covina. San Gabriel Valley Tribune. July 21, 2023. https://web.archive.org/web/20221219151901/https://www.sgvtribune.com/2014/01/26/gigantic-73-year-old-steam-locomotive-pays-visit-to-covina/. December 19, 2022.
  18. Web site: Fans Welcome Big Boy No. 4014's Return to the National Rail Network. January 27, 2014. Community Ties. Union Pacific. https://web.archive.org/web/20190501225334/https://www.up.com/aboutup/community/community_ties/0127_4014_colton.htm. May 1, 2019. May 14, 2019.
  19. West Colton Yard. Union Pacific. June 6, 2019. https://web.archive.org/web/20190606112457/https://www.up.com/cs/groups/public/@uprr/@newsinfo/documents/up_pdf_nativedocs/pdf_up_facilities_west_colton.pdf. June 6, 2019.
  20. News: Forgione . Mary . April 28, 2014 . Big Boy's wheels to roll Monday on epic California-Wyoming journey . . April 30, 2019 . https://web.archive.org/web/20160909221130/https://www.latimes.com/travel/deals/la-trb-california-big-boy-steam-engine-20140425-story.html . September 9, 2016.
  21. News: Rader. Anna. May 8, 2014. Union Pacific Big Boy 4014 Arrives In Cheyenne. Wyoming Public Radio. April 30, 2019. https://web.archive.org/web/20151001143412/https://www.wyomingpublicmedia.org/post/union-pacific-big-boy-4014-arrives-cheyenne. October 1, 2015.
  22. Web site: "Living Legend" Northern No. 844. Union Pacific. May 3, 2019. https://web.archive.org/web/20190421104610/https://www.up.com/heritage/steam/844/. April 21, 2019.
  23. News: Fike. Ellen. August 20, 2017. Big Boy 4014 restoration still set for completion in 2019. Wyoming Tribune Eagle. June 7, 2019. https://web.archive.org/web/20190114103435/https://www.wyomingnews.com/big-boy-restoration-still-set-for-completion-in/article_f0f3385e-8435-11e7-8d52-43f95323c973.html. January 14, 2019.
  24. News: November 24, 2014. Work on Big Boy locomotive goes slowly. Omaha World-Herald. Associated Press. July 1, 2019. https://web.archive.org/web/20190701133854/https://www.omaha.com/money/work-on-big-boy-locomotive-goes-slowly/article_5fa52cc2-c00a-5103-9eb2-c102eee287bc.html. July 1, 2019.
  25. Web site: Steam Update: Big Boy No. 4014 Restoration Begins. August 11, 2016. Inside Track. Union Pacific. https://web.archive.org/web/20180806172345/https://www.up.com/aboutup/community/inside_track/august-steam-8-11-2016.htm. August 6, 2018. April 27, 2019.
  26. Web site: Big Boy Work Begins. Trains. Kalmbach Media. August 12, 2016. April 28, 2019. https://web.archive.org/web/20180710010212/http://trn.trains.com/news/news-wire/2016/08/12-big-boy-work-begins. July 10, 2018.
  27. Web site: Steam Update: With Disassembly Complete, Big Boy Fabrication Underway. February 1, 2017. Inside Track. Union Pacific. https://web.archive.org/web/20170822145223/https://www.up.com/aboutup/community/inside_track/steam-update-2-1-2017.htm. August 22, 2017. August 5, 2019.
  28. Web site: Progress report on Union Pacific Big Boy 4014. Trains. Kalmbach Media. March 3, 2018. May 4, 2019. https://web.archive.org/web/20180727091837/http://trn.trains.com/news/news-wire/2018/03/03-progress-report-on-union-pacific-big-boy-4014. July 27, 2018.
  29. Web site: Union Pacific confirms Big Boy 4-8-8-4 No. 4014 for Ogden in 2019 and more. Trains. Kalmbach Media. May 10, 2018. May 4, 2019. https://web.archive.org/web/20181018195409/https://trn.trains.com/news/news-wire/2018/05/10-union-pacific-confirms-big-boy-4-8-8-4-no-4014-for-ogden-in-2019-and-more. October 18, 2018.
  30. Web site: Putting the 'Big Boy' Back Together. Inside Track. Union Pacific. March 22, 2018. April 27, 2019. https://web.archive.org/web/20180917163429/https://www.up.com/aboutup/community/inside_track/steam-update-03-22-2018.htm. September 17, 2018.
  31. Web site: Frank. Al. Big Boy. Forney Museum of Transportation. July 27, 2019. https://web.archive.org/web/20181210052304/https://www.forneymuseum.org/Featured_Exhibit.html. December 10, 2018.
  32. Web site: Glischinski. Steve. March 29, 2017. Minnesota steam engine to use Big Boy fire grates. Trains. Kalmbach Media. August 5, 2019. https://web.archive.org/web/20170331030616/https://trn.trains.com/news/news-wire/2017/03/29-big-boy-grates. March 31, 2017.
  33. Web site: Steam Update: Big Boy's Restoration Nearly Complete. Inside Track. Union Pacific. January 29, 2019. April 27, 2019. https://web.archive.org/web/20190427005537/https://www.up.com/aboutup/community/inside_track/steam-update-1-29-2019.htm. April 27, 2019.
  34. Web site: 'Big Boy' passes early pressure test. Trains. Kalmbach Media. February 6, 2019. June 27, 2019. https://web.archive.org/web/20190504022628/http://trn.trains.com/news/news-wire/2019/02/06-big-boy-passes-early-pressure-test. May 4, 2019.
  35. Web site: Wrinn. Jim. Big Boy 4014, a hydrostatic test, and why UP can beat the usual six month rule. Trains. Kalmbach Media. February 8, 2019. May 30, 2019. https://web.archive.org/web/20190530220514/http://cs.trains.com/trn/b/staff/archive/2019/02/08/big-boy-4014-a-hydrostatic-test-and-why-up-can-beat-the-usual-six-month-rule.aspx. May 30, 2019.
  36. Web site: Big Boy No. 4014 fired up for the first time; May 12 excursion announced. April 10, 2019. Trains. Kalmbach Media. https://web.archive.org/web/20190410195349/http://trn.trains.com/news/news-wire/2019/04/10-big-boy-no-4014-fired-up-for-the-first-time-may-12-excursion-announced. April 10, 2019. April 16, 2019.
  37. Web site: Wrinn. Jim. Under its own power, Big Boy moves outside of shop. Trains. Kalmbach Media. May 2, 2019. May 2, 2019. https://web.archive.org/web/20190502201255/http://trn.trains.com/news/news-wire/2019/05/02-big-boy-moves-outside-of-shop. May 2, 2019.
  38. Web site: Wrinn. Jim. Big Boy debuts with test run. Trains. Kalmbach Media. May 3, 2019. May 3, 2019. https://web.archive.org/web/20190503172951/http://trn.trains.com/news/news-wire/2019/05/03-big-boy-debuts-with-test-run. May 3, 2019.
  39. News: Scott. Ramsey. May 4, 2019. The Big Boy leaves the shop and heads into history. Wyoming Tribune Eagle. June 7, 2019. https://web.archive.org/web/20190504181523/https://www.wyomingnews.com/news/local_news/the-big-boy-leaves-the-shop-and-heads-into-history/article_4fd7b951-04d4-514e-b464-b9524044ca43.html. May 4, 2019.
  40. Web site: Sweeney. Steve. UP steam crew has Big Boy ready to roll. Trains. Kalmbach Media. May 4, 2019. July 17, 2019. https://web.archive.org/web/20190506022407/http://trn.trains.com/news/news-wire/2019/05/04-big-boy-is-ready-to-roll. May 6, 2019.
  41. Web site: Keefe. Kevin. January 17, 2020. The Challenger at high tide. https://web.archive.org/web/20210511080452/http://cs.trains.com/ctr/b/mileposts/archive/2020/01/17/the-challenger-at-high-tide.aspx. May 11, 2021. June 23, 2021. Classic Trains. Kalmbach Media.
  42. Book: Wrinn, Jim. 2020. Union Pacific's Big Boys: The Complete Story from History to Restoration. 1st. 143. Kalmbach Media. 978-1-62700-792-4.
  43. Web site: Wrinn. Jim. March 31, 2020. Union Pacific No. 3985's next stop. Trains. Kalmbach Media. June 23, 2021. https://web.archive.org/web/20210117041006/http://cs.trains.com/trn/b/staff/archive/2020/03/31/union-pacific-no-3985-39-s-next-stop.aspx. January 17, 2021.
  44. World's Largest Steam Locomotive Returns to the Rails as Union Pacific Commemorates Transcontinental Railroad's 150th Anniversary. Union Pacific. March 14, 2019. May 2, 2019. https://web.archive.org/web/20190502214019/https://www.up.com/media/releases/190314-big-boy-schedule.htm. May 2, 2019.
  45. Web site: Wrinn. Jim. Big Boy christened, begins trip to Golden Spike celebration. Trains. Kalmbach Media. May 4, 2019. May 5, 2019. https://web.archive.org/web/20190505170122/http://trn.trains.com/news/news-wire/2019/05/04-big-boy-christened-leads-doubleheader-to-rawlins-wyo. May 5, 2019.
  46. News: O'Donoghue. Amy. Thousands turn out as Big Boy locomotive rolls into Ogden. Deseret News. May 9, 2019. May 12, 2019. https://web.archive.org/web/20190509231155/https://www.deseretnews.com/article/900069881/thousands-turn-out-as-big-boy-locomotive-rolls-into-ogden.html. May 9, 2019.
  47. Union Pacific Recreates Historic Steam Meet, Commemorating 150th Anniversary of the Transcontinental Railroad's Completion. Union Pacific. May 9, 2019. June 11, 2019. https://web.archive.org/web/20190611023659/https://www.up.com/media/releases/190509-transcon150.htm. June 11, 2019.
  48. Union Pacific's Big Boy No. 4014 Locomotive Prepares for 'Great Race Across the Midwest'. Union Pacific. June 13, 2019. July 8, 2019. https://web.archive.org/web/20190708200840/https://www.up.com/media/releases/190613-big-boy-4014-midwest.htm. July 8, 2019.
  49. Union Pacific's Big Boy No. 4014 Locomotive Concludes 150th Anniversary Celebration with 'Great Race Across the Southwest'. Union Pacific. September 5, 2019. September 28, 2019. https://web.archive.org/web/20190906171040/https://www.up.com/media/releases/190905-big-boy-southwest.htm. September 6, 2019.
  50. News: Obert. Elizabeth. July 14, 2019. Historic locomotive Big Boy No. 4014 rolls into St. Paul. St. Paul Pioneer Press. November 16, 2022. https://web.archive.org/web/20210511131801/https://www.twincities.com/2019/07/14/big-boy-no-4014-historic-steam-locomotive-makes-appearance-in-st-paul/. May 11, 2021.
  51. Web site: Festival of Steam with Big Boy No. 4014. March 7, 2021. Lake Superior Railroad Museum. https://web.archive.org/web/20190726111353/https://lsrm.org/event/festival-steam-big-boy-no-4014/. July 26, 2019.
  52. News: Bodiford. Vince. Union Pacific Big Boy #4014 steam tour cancelled. The Cheyenne Post. April 29, 2020. May 23, 2021. https://web.archive.org/web/20200516215025/https://www.thecheyennepost.com/news/union-pacific-big-boy-4014-steam-tour-cancelled/article_25e7dcdc-8a4f-11ea-812e-e3053b995b23.html. May 16, 2020.
  53. Full Steam Ahead: World's Largest Steam Locomotive Returns with 'The Big Boy 2021 Tour'. Union Pacific. June 14, 2021. June 17, 2021. https://web.archive.org/web/20210614200842/https://www.up.com/media/releases/210614-big-boy-tour.htm. June 14, 2021.
  54. Web site: Kratville-Wrinn. Cate. May 13, 2022. Original Big Boy tender to be restored by Railroading Heritage of Midwest America. Trains. Kalmbach Media. May 16, 2022. https://web.archive.org/web/20220513134836/https://www.trains.com/trn/news-reviews/news-wire/original-big-boy-tender-to-be-restored-by-railroading-heritage-of-midwest-america/. May 13, 2022.
  55. Union Pacific, Railroading Heritage of Midwest America reach agreement to preserve historic locomotives, passenger cars. Railroading Heritage of Midwest America. May 2, 2022. https://web.archive.org/web/20220428204728/https://rrhma.com/up-donation/. April 28, 2022.
  56. Web site: Glischinski. Steve. April 28, 2022. Railroading Heritage of Midwest America, Union Pacific agree to donation of Challenger, other locomotives, cars. Trains. Kalmbach Media. May 2, 2022. https://web.archive.org/web/20220428191606/https://www.trains.com/trn/news-reviews/news-wire/railroading-heritage-of-midwest-america-union-pacific-agree-to-donation-of-challenger-other-locomotives-cars/. April 28, 2022.
  57. Web site: Franz. Justin. June 30, 2022. Union Pacific 'Big Boy' to Visit Denver in July. Railfan & Railroad. White River Productions. July 1, 2022. https://web.archive.org/web/20220701015103/https://railfan.com/union-pacific-big-boy-to-visit-denver-in-july/. July 1, 2022.
  58. Union Pacific Announces Big Boy No. 4014 July Trip between Denver and Cheyenne. Union Pacific. July 21, 2022. July 29, 2022. https://web.archive.org/web/20220721201337/https://www.up.com/media/releases/big-boy-denver-nr-220721.htm. July 21, 2022.
  59. Web site: September 15, 2022. Union Pacific Fires Up ‘Big Boy’ to Move Rare 2-10-2. Railfan & Railroad. White River Productions. November 27, 2023. https://web.archive.org/web/20230529144753/https://railfan.com/union-pacific-fires-up-big-boy-to-move-rare-2-10-2/. May 29, 2023.
  60. Web site: Sanchez. Cesar. November 19, 2022. 3 of the largest and rarest locomotives arrive in Silvis. WQAD-TV. May 31, 2024. https://web.archive.org/web/20230105043127/https://www.wqad.com/article/news/local/union-pacific-heritage-donation-railroading-heritage-of-midwestern-america-silvis-illinois/526-17d95fd9-d6e6-4bee-aa41-b384720297f8. January 5, 2023.
  61. Web site: Union Pacific announces Big Boy trip to Omaha. Trains. Kalmbach Media. May 19, 2023. May 19, 2023. https://web.archive.org/web/20230519161710/https://www.trains.com/trn/news-reviews/news-wire/union-pacific-announces-big-boy-trip-to-omaha/. May 19, 2023.
  62. Union Pacific's Historic 'Big Boy No. 4014' Set to Score a Home Run During College World Series. Union Pacific. May 19, 2023. June 21, 2023. https://web.archive.org/web/20230522022836/https://www.up.com/media/releases/big-boy-omaha-nr-230519.htm. May 22, 2023.
  63. Johnson . Greg . Wyoming's Big Boy 4014 Locomotive Rescues Freight Train Stuck In Nebraska . Cowboy State Daily . July 10, 2023 . July 10, 2023 . en . https://web.archive.org/web/20230710221037/https://cowboystatedaily.com/2023/07/10/wyomings-big-boy-4014-locomotive-rescues-freight-train-stuck-in-nebraska/ . July 10, 2023 .
  64. Web site: UP placing two tickets on sale today for Big Boy cab rides. Trains. Kalmbach Media. June 23, 2023. July 5, 2023. https://web.archive.org/web/20230627051149/https://www.trains.com/trn/news-reviews/news-wire/up-placing-two-tickets-on-sale-today-for-big-boy-cab-rides/. June 27, 2023.
  65. Web site: April 10, 2024. Union Pacific ‘Big Boy’ 4014 Heads West in July. Railfan & Railroad. White River Productions. April 24, 2024. https://web.archive.org/web/20240410230653/https://railfan.com/union-pacific-big-boy-4014-heads-west-in-july/. April 10, 2024.
  66. Web site: UP 4014 Celebration - July 2024 . www.wplives.org . July 13, 2024 . https://web.archive.org/web/20240705033717/https://www.wplives.org/news_items/2024_Union_Pacific_Big_Boy_4014.html . July 5, 2024.
  67. Web site: December 13, 2018. Big Boy 4014 gets drivers; UP asks for PTC waivers for three steam locomotives. Trains. Kalmbach Media. June 9, 2019. https://web.archive.org/web/20190608214004/http://trn.trains.com/news/news-wire/2018/12/13-big-boy-4014-gets-drivers-up-asks-for-ptc-waivers-for-three-steam-locomotives. June 8, 2019.
  68. Web site: Wrinn. Jim. February 28, 2019. FRA: UP doesn't need waiver to run steam 11,000 miles in 2019. Trains. Kalmbach Media. June 9, 2019. https://web.archive.org/web/20190609162057/http://trn.trains.com/news/news-wire/2019/02/28-fra-says-up-doesnt-need-wavier-to-run-steam-11000-miles-in-2019. June 9, 2019.
  69. Web site: August 19, 2021 . Big Boy Flexes Its Muscles with Positive Train Control . live . https://web.archive.org/web/20210820003243/https://www.up.com/aboutup/community/inside_track/big-boy-ptc-210819.htm . August 20, 2021 . August 20, 2021 . Inside Track . Union Pacific.
  70. News: August 20, 2021 . UP 4014 First Main Line Steam Locomotive Outfitted With PTC . Railfan & Railroad . White River Productions . live . October 14, 2022 . https://web.archive.org/web/20210820194341/https://railfan.com/up-4014-first-main-line-steam-locomotive-outfitted-with-ptc/ . August 20, 2021.
  71. Web site: March 8, 2024. Diesel helpers often lend a hand on mainline steam excursions. Trains. Kalmbach Media. May 26, 2024. https://web.archive.org/web/20240329033152/https://www.trains.com/trn/train-basics/abcs-of-railroading/diesel-helpers-often-lend-a-hand-on-mainline-steam-excursions/. March 29, 2024.
  72. News: May 23, 2024. ‘Big Boy’ 4014 Runs on Main Line Solo With New PTC System. Railfan & Railroad. White River Productions. May 26, 2024. https://web.archive.org/web/20240525004809/https://railfan.com/big-boy-4014-runs-on-main-line-solo-with-new-ptc-system/. May 25, 2024.

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