OK 2 sheds, I concede. As I said, I'm not really up-to-speed with totally procedural control these days, and I suspect that you are much hotter on MATS Part 1 than I am. Before I slink away though, I will make a final point to reassure any visitors to this thread. It is a fact that we can always contrive, for discussion, scenarios which are potentially unsafe and yet meet the legal criteria of procedural separation. However, none of us would ever support an attempt to actually use them "for real". The bottom line is that everything is a minimum separation and we all use more whenever there is a hint of a doubt.
(edited to remove a double negative!!!)
[This message has been edited by Numpo-Nigit (edited 19 December 2000).]