Right with you there derekl
As for aircraft refuelling -- ever seen the guys using their radios during the process?
Been there my friend..... I spoke to the fuel farm on my mobile while standing with the fueller and his bowser under the wing of a 747F. Funnily enough Mr Refueller didn't seem to panic much, neither did I, nor the flight engineer and our eyebrows didn't even get lightly charred !