CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins78% CONFIDENCEOverall confidence: 78%How well the pin's source and references back up its dates.Weighted average of how firmly 4 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 at 75% confidence or better
Multiple sources (Wikipedia[3], Curbside Classic[4]) state Caterpillar first unveiled a completed 797 at its Decatur, Illinois plant on 29 September 1998.Caterpillar unveiled its 797 — at the time the world's largest and most powerful haul truck — at its Decatur, Illinois assembly plant on 29 September 1998.
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