Finland's Onkalo Repository Set to Bury Nuclear Waste

European Bank for Reconstruction and DevelopmentMailuu-Suu, Jalal-Abad Region, Kyrgyzstan

EBRD-backed remediation of Kyrgyzstan's Mailuu-Suu tailings dam

Starts 12/31/2030SCHEDULED 75% CONFIDENCEin 4.3 yearsGiven as scheduled, per the source^[1]: the remediation works agreement covers "seven years of remediation works" with a "contract scheduled completion date" of 31/12/2030.

A €23M EBRD-backed grant funds a seven-year project to relocate radioactive uranium tailings from Mailuu-Suu's most dangerous dam, away from the Fergana Valley's water supply.

€23M

0.62

NovarkaChernobyl Nuclear Power Plant, Chornobyl Exclusion Zone, Ukraine

Chornobyl NPP Accepts Novarka's New Safe Confinement Into Operation

Starts 11/08/2017CONFIRMED 90% CONFIDENCE8.9 years agoUkraine's Chornobyl NPP states it accepted the New Safe Confinement's Enclosing Perimeter into operation on 8 November 2017 (chnpp.gov.ua^[2]).

Ukraine's Chornobyl Nuclear Power Plant formally accepted the New Safe Confinement's Enclosing Perimeter from builder Novarka, completing the giant arch meant to contain the ruined Reactor 4 for a century. The 36,000-tonne steel structure, the largest movable land-based structure ever built, had been skidded into place over the old sarcophagus in November 2016.

0.58

KONE Reopens Its Deep-Mine Elevator Test Lab in Tytyri, Finland

Tytyri, Lohja, FinlandKONE Corporation

Starts 03/29/2017CONFIRMED 90% CONFIDENCE9.5 years agoHappened as dated, per the source^[1]: "has unveiled its renewed high-rise elevator testing facility in Tytyri, Finland, after extensive renovations."

KONE finished renovating its underground elevator testing facility inside a Finnish limestone mine, extending its shafts to the world's deepest for free-fall and speed testing.

0.58

European Spallation Source

European Spallation Source Aims for First Neutrons

European Spallation Source, Brunnshög, Lund, Sweden

Starts 02/28/2027ESTIMATED 69% CONFIDENCEin 158 daysGiven as scheduled, per the source^[1]: "planned for early 2027".

A 13-nation collaboration near Lund, Sweden is finishing a roughly €3 billion (about $3.5 billion) neutron research facility built around one of the world's most powerful linear particle accelerators.

$3B

0.57

Hyper-Kamiokande Neutrino Observatory Cavern Completed

Kamioka, Hida, Gifu Prefecture, Japan

Starts 07/31/2025CONFIRMED 89% CONFIDENCE1.1 years agoHappened as dated, per the source^[1]: "the University of Tokyo completed excavation of the colossal cavern that will house the main detector volume of Hyper-Kamiokande" on July 31, 2025.

Crews finished excavating the huge cavern in a Japanese mountain that will house the Hyper-Kamiokande neutrino observatory, a step toward the detector's planned start of observations.

$600M

0.56

Architecture09/15/2026@BuildDesk

DUNE Far Detector Caverns Excavation Completed

Sanford Underground Research Facility, Lead, Lawrence County, South Dakota, United StatesFermilab

Starts 08/15/2024CONFIRMED 90% CONFIDENCE2.1 years agoHappened as dated, per the source^[1]: "completion of excavation work for the Long-Baseline Neutrino Facility".

Crews finished carving three enormous caverns a mile beneath a former South Dakota gold mine to house the Deep Underground Neutrino Experiment.

0.56

Colosseum's Tod's-Funded Facade Restoration Unveiled After Three Years

Rome, Italy

Tod's

Starts 07/01/2016CONFIRMED 90% CONFIDENCE10.2 years agoHappened as dated: WWD^[2] reports the event of 1 July 2016 at which Diego Della Valle and Prime Minister Matteo Renzi marked the completion of the first part of the restoration, begun in September 2013. The whole project was then expected to run to 2020-2022.

A three-year, Tod's-funded restoration of the Colosseum's facade - the first phase of a longer project - wrapped up with a ceremony attended by Italy's prime minister, revealing the monument's stone cleaned of two millennia of grime.

0.56

Infrastructure09/15/2026@BuildDesk

LKAB Relocates Kiruna's Historic Lundbohm Villa in Three Sections

Kiruna, Sweden

LKAB

Starts 09/26/2017CONFIRMED 90% CONFIDENCE9.0 years agoLKAB’s^[2] own press release states Hjalmar Lundbohmsgården, the sixth of eight heritage buildings, was moved on Tuesday 26 September 2017.

To clear ground for LKAB's expanding Kiruna iron ore mine, contractor PEAB moved the century-old Hjalmar Lundbohmsgården villa across town - dismantled into three sections, because its later extensions made moving it whole impractical.

0.56

Chernobyl Nuclear Power Plant, Vyshhorod Raion, Kyiv Oblast, Ukraine

Drone strike breaches Chernobyl's New Safe Confinement

Starts 02/14/2025CONFIRMED 90% CONFIDENCE1.6 years agoHappened as dated, per the source^[1]: a Russian "Geran-2" drone struck the New Safe Confinement structure at approximately 1:50 a.m. on February 14, 2025.

A Russian drone struck Chernobyl's €2BN New Safe Confinement shelter, tearing a hole in the roof and starting a fire that burned for weeks.

0.55

Science09/11/2026@ThePinGang

Deep Underground Neutrino Experiment Begins

Lead, South DakotaFermilab

Starts 06/01/2031ESTIMATED 63% CONFIDENCEin 4.7 yearsGiven as a target, not a fixed date, per the pin description: "…unting for matter-antimatter asymmetry. Estimated date.…"

A neutrino beam fired 1,300 km from Fermilab to detectors a mile underground in South Dakota, hunting for matter-antimatter asymmetry. Estimated date.

$5B

0.55

Mining09/15/2026@BuildDesk

TAKRAF Commissions the First F60 Overburden Conveyor Bridge at Welzow

Welzow, Brandenburg, Germany

TAKRAF

Starts 01/01/1972ESTIMATED 65% 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.

0.55

JAVYSBohunice Nuclear Power Plant, Jaslovské Bohunice, Slovakia

Bohunice V1 Nuclear Reactors Fully Dismantled

Starts 07/29/2022CONFIRMED 90% CONFIDENCE4.2 years agoHappened as dated, per the source^[1]: "The two VVER-440 V-230 reactors in Slovakia were decommissioned and disassembled on site".

Slovakia finished fully dismantling the Soviet-era V1 reactors at Bohunice in July 2022, one of the few nuclear plants taken apart down to the reactor vessels.

$1.3B

0.63

European Bank for Reconstruction and DevelopmentMailuu-Suu, Jalal-Abad Region, Kyrgyzstan

EBRD-backed remediation of Kyrgyzstan's Mailuu-Suu tailings dam

A €23M EBRD-backed grant funds a seven-year project to relocate radioactive uranium tailings from Mailuu-Suu's most dangerous dam, away from the Fergana Valley's water supply.

€23M

0.62

NovarkaChernobyl Nuclear Power Plant, Chornobyl Exclusion Zone, Ukraine

Chornobyl NPP Accepts Novarka's New Safe Confinement Into Operation

Starts 11/08/2017CONFIRMED 90% CONFIDENCE8.9 years agoUkraine's Chornobyl NPP states it accepted the New Safe Confinement's Enclosing Perimeter into operation on 8 November 2017 (chnpp.gov.ua^[2]).

0.58

KONE Reopens Its Deep-Mine Elevator Test Lab in Tytyri, Finland

Tytyri, Lohja, FinlandKONE Corporation

KONE finished renovating its underground elevator testing facility inside a Finnish limestone mine, extending its shafts to the world's deepest for free-fall and speed testing.

0.58

European Spallation Source

European Spallation Source Aims for First Neutrons

European Spallation Source, Brunnshög, Lund, Sweden

Starts 02/28/2027ESTIMATED 69% CONFIDENCEin 158 daysGiven as scheduled, per the source^[1]: "planned for early 2027".

$3B

0.57

Hyper-Kamiokande Neutrino Observatory Cavern Completed

Kamioka, Hida, Gifu Prefecture, Japan

Crews finished excavating the huge cavern in a Japanese mountain that will house the Hyper-Kamiokande neutrino observatory, a step toward the detector's planned start of observations.

$600M

0.56

Architecture09/15/2026@BuildDesk

DUNE Far Detector Caverns Excavation Completed

Sanford Underground Research Facility, Lead, Lawrence County, South Dakota, United StatesFermilab

Starts 08/15/2024CONFIRMED 90% CONFIDENCE2.1 years agoHappened as dated, per the source^[1]: "completion of excavation work for the Long-Baseline Neutrino Facility".

Crews finished carving three enormous caverns a mile beneath a former South Dakota gold mine to house the Deep Underground Neutrino Experiment.

0.56

Colosseum's Tod's-Funded Facade Restoration Unveiled After Three Years

Rome, Italy

Tod's

0.56

Infrastructure09/15/2026@BuildDesk

LKAB Relocates Kiruna's Historic Lundbohm Villa in Three Sections

Kiruna, Sweden

LKAB

Starts 09/26/2017CONFIRMED 90% CONFIDENCE9.0 years agoLKAB’s^[2] own press release states Hjalmar Lundbohmsgården, the sixth of eight heritage buildings, was moved on Tuesday 26 September 2017.

0.56