I was on a Worktrain when they removed the Pahiatua watertank back in the late 70's, one of those NZR designs that looked like the last flat-top at the Como R/H.
The carpenters just drove out all the bolts and removed the braces and then it was pulled over with a wirerope. I can't recall what the rope was attached to, we had the old Steamcrane attached for lifting all the 12x12's so maybe that winch: it wasn't our Loco I'd remember that. The cistern was intact when reaching the ground, so it probably could have been reused. We always had the crane for such purposes, anything to be reused would have been lifted, something the C&S couldn't do.
UpSideDownC
in New Zealand