Wilhelm and Karl Maybach Found MTU Friedrichshafen

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• Architecture09/14/2026@BuildDesk

  Sphinx Observatory Opens Atop the Jungfraujoch

  Jungfraujoch, Bernese Alps, Switzerland

  

  Starts 12/31/1937CONFIRMED87% CONFIDENCE88.7 years agoHappened as dated, per the source^[1]: "The Sphinx observatory ... was completed in 1937."

  The Sphinx Observatory, a research station tunnelled into a 3,571-metre Alpine summit above the Jungfraujoch, was completed in 1937 as one of Europe's most remote scientific buildings.

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• Transport09/15/2026@BuildDesk

  TBM Wanda Completes Drilling of the Albvorland Tunnel

  Wendlingen am Neckar, GermanyImplenia

  

  Starts 10/29/2019CONFIRMED75% CONFIDENCE6.9 years agoImplenia's^[4] own project news release dates the southern tube breakthrough to 29 October 2019.

  Tunnel boring machine Wanda finished excavating the southern tube of the Albvorland Tunnel, the last major breakthrough on Deutsche Bahn's Stuttgart-Ulm high-speed line. The 8-kilometer twin-tube tunnel near Wendlingen am Neckar was built by Implenia and cuts travel time between Stuttgart and Ulm to roughly 30 minutes.

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• Science09/22/2026@ScienceDesk

  Mendeleev Presents the Periodic Table

  St. Petersburg State University, Менделеевская линия, округ № 7, Saint Petersburg, Northwestern Federal District, 199034, RussiaRussian Chemical Society

  

  Starts 03/06/1869CONFIRMED85% CONFIDENCE157.6 years agoWikipedia's^[2][3] Dmitri Mendeleev article states it plainly: "On 6 March 1869, he made a formal presentation to the Russian Chemical Society, titled The Dependence between the Properties of the Atomic Weights of the Elements". Russia was still on the Julian calendar, so contemporary Russian sources date the work to February; the manuscript sheet on Commons is signed 17.02.1869, the Julian date for 1 March, and the pin uses the Gregorian date Wikipedia gives for the presentation itself.

  Dmitri Mendeleev's paper The Dependence between the Properties of the Atomic Weights of the Elements is read to the Russian Chemical Society in St Petersburg, arranging the known elements by atomic weight and valence and leaving gaps for elements not yet found.

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• Mining09/15/2026@BuildDesk

  TAKRAF Commissions the First F60 Overburden Conveyor Bridge at Welzow

  Welzow, Brandenburg, GermanyTAKRAF

  

  Starts 01/01/1972ESTIMATED65% CONFIDENCE54.7 years agoWikipedia's^[2] Overburden Conveyor Bridge F60 article dates the first unit's construction to 1969-1972 and entry into service at the Welzow open-pit mine to 1972, without a specific day.

  VEB TAKRAF completed the first F60 lignite overburden conveyor bridge at the Welzow open-pit mine, creating what is still recognized as the largest mobile land machine ever built.

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• Marine09/15/2026@BuildDesk

  Wilhelmsen Launches Tønsberg as the World's Largest Ro-Ro Ship

  Mitsubishi Heavy Industries Nagasaki Shipyard, Nagasaki, JapanWilhelmsen Group

  

  Starts 10/02/2010CONFIRMED84% CONFIDENCE16.0 years agoWikipedia's^[4] MV Tønsberg article gives the launch date as 2 October 2010, built by Mitsubishi Heavy Industries for the Wilh. Wilhelmsen Group and noted as the largest RoRo ship in the world when built.

  Wilh. Wilhelmsen launched the 265-meter Tønsberg at Mitsubishi Heavy Industries' Nagasaki shipyard, the largest roll-on/roll-off vessel ever built at the time. The ship carries luxury cars, SUVs, and outsized construction equipment across the world's oceans.

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• Science09/22/2026@ScienceDesk

  The Curies Announce the Discovery of Radium

  Institut de France, Rue de Seine, Quartier de Saint-Germain-des-Prés, 6th Arrondissement, Paris, Ile-de-France, Metropolitan France, 75006, FranceFrench Academy of Sciences

  

  Starts 12/26/1898CONFIRMED88% CONFIDENCE127.7 years agoWikipedia's^[2] Radium article dates both steps: "Radium was discovered by Marie Sklodowska-Curie and her husband Pierre Curie on 21 December 1898 in a uraninite (pitchblende) sample from Jachymov" and "The Curies announced their discovery to the French Academy of Sciences on 26 December 1898". The pin is the announcement, the public event of the two.

  Marie and Pierre Curie announce radium to the French Academy of Sciences in Paris, five days after isolating it from pitchblende ore mined at Jachymov. It is the second element they identify that year, after polonium.

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• Aerospace09/15/2026@BuildDesk

  Felbermayr Hauls Two Giant Autoclaves to FACC's Innviertel Plants

  Aschach an der Donau, AustriaFACC

  

  Starts 11/27/2017CONFIRMED85% CONFIDENCE8.8 years agoFelbermayr's^[3] own account of the job states the barge carrying the two autoclaves reached the Aschach an der Donau port on 27 November 2017, ahead of the final road transport to FACC.

  Austrian heavy-haul specialist Felbermayr moved two industrial autoclaves weighing over 300 tons combined from Germany, via the Danube, to aerospace composites maker FACC's plants in Austria's Innviertel region.

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• Transport09/15/2026@BuildDesk

  SBB Opens the Löwenstrasse Underground Station at Zürich Hauptbahnhof

  Zürich Hauptbahnhof, Bahnhofplatz, 8001 Zürich, SwitzerlandSBB

  

  Starts 06/15/2014CONFIRMED87% CONFIDENCE12.3 years agoPer Wikipedia's^[2] Weinberg Tunnel article: "the route was changed to its current state" with the tunnel's opening and a simultaneous timetable change on 15 June 2014, after public platforms opened a day earlier.

  Swiss Federal Railways brought the new four-track Löwenstrasse station into service 16 metres beneath Zürich's main station, the first stage of the Durchmesserlinie cross-city link.

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• Food09/15/2026@BuildDesk

  Hopfenveredlung St. Johann Starts Up as the World's Largest Hop Processing Plant

  Mainburger Straße 15, 93358 Train, GermanyHopfenveredlung St. Johann

  

  Starts 09/01/2020CONFIRMED85% CONFIDENCE6.1 years agoBarthHaas's^[3] own announcement of the plant's (delayed) ceremonial opening states it 'was already commissioned in September 2020'.

  A joint venture between BarthHaas and hop cooperative HVG, the Hopfenveredlung St. Johann plant in Bavaria's Hallertau region processes a quarter of the world's hop harvest into pellets and extract. The €65 million facility went into operation in September 2020, three years after the industry began consolidating hop finishing into ever-larger sites.

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• Transport09/15/2026@BuildDesk

  Lyon-Turin Base Tunnel Targeted for 2033 Completion

  Susa, Torino, Piemonte, ItalyTELT

  

  Starts 12/31/2033ESTIMATED72% CONFIDENCEin 7.3 yearsGiven as scheduled, per the source^[1]: "The project is expected to be completed by 2033."

  TELT, the joint French-Italian agency building the Mont d'Ambin base tunnel under the Alps, is now aiming to finish the roughly 57km bore by the end of 2033.

  €11.1B

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• Energy09/22/2026@EnergyDesk

  Rosatom Delivers ITER's Last Poloidal Field Coil to the Cadarache Site

  RosatomITER site, Saint-Paul-lès-Durance, France

  Starts 02/10/2023CONFIRMED90% CONFIDENCE3.6 years agoWorld Nuclear News^[3] reported the Russian-built ITER^[2] poloidal field coil arrived at the port of Fos-sur-Mer on 10 February 2023.

  A Russian-built poloidal field coil for the ITER fusion reactor reached the construction site at Cadarache, completing the set of six ring magnets that will shape and suspend the plasma. PF1 had landed at Marseille's industrial harbour, near Fos-sur-Mer, on 9 January and made the 105 km road journey a month later.

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• Infrastructure09/15/2026@BuildDesk

  Menzi Muck Launches the Menzi Muck 2500, the First Walking Excavator

  Feffetstrasse 14, 9464 Rüthi, SwitzerlandMenzi Muck

  

  Starts 01/01/1966ESTIMATED68% CONFIDENCE60.7 years agoMenzi Muck^[3] AG's own company history states the first walking excavator, the Menzi Muck 2500, was launched in 1966, but does not publish an exact day, so only the year is confirmed.

  Swiss inventor Ernst Menzi's company launched the Menzi Muck 2500 in 1966, the world's first all-terrain walking (spider) excavator, built to work steep Alpine slopes conventional machines could not reach.

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