ESTIMATEDDate confidence: ESTIMATEDA target, not a fixed dateHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all ESTIMATED pins64% CONFIDENCEOverall confidence: 64%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins from 50% to 74% confidence
Happened as dated, per the source[1]: "completed the work in 2023."The Levvel consortium finished reinforcing the 32-kilometre Afsluitdijk sea wall with tens of thousands of custom concrete blocks so it can withstand a one-in-10,000-year storm.
$617M
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