We only made the 1 unit that large so far as I know but I do remember the doors, drop slide drive and links had to be removed to ship it due to the weight. The barrel shipped on a low bed stretch trailer and the doors went on a flatbed then the drop slide drive section and the links with all of the pins on a 3rd trailer.
We made a lot of core barrels under reamers clean out buckets and augers that were tiny compared to that one many as small as 18" in diameter but the 36 to 72" range was most popular. Mostly I did layout and fit up of the major assemblies like the main frames sliding frames and derricks but occasionally I would make tooling or tack up and weld out the augers or build the water tanks and fuel tanks

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