Huw, like your new portrait - not so stern.
These safes along with similar weight Chubb Specials came in and went out on Glasgow Hiring Co. low loaders on to concrete floors so no great problems but using 10 ton toe-jacks in place of the usual pinch bars.
Some time ago I seem to remember you wrote of moving extremely heavy safes with just pinch bars, a heel (fulcrum) and solid rollers. As some onlookers used to observe when these heavies were being moved "that's how they built the pyramids". More bodies of course then.
I have an old photo (1957) showing how it was before Hiab and Tail Lifts just getting a safe on to a lorry. The winch-man is barely visible.
Attachment 20201 Attachment 20202To paraphrase Archimedes - "give me a fulcrum for my lever and I will move the world".