Hi Tom,

Welcome back! I have nothing much to contribute at this point, but reading this post with all of the historical information written by you and the other guys really is irreplaceable. This also goes for the whole forum! I recently managed to obtain a copy of the Nigel Trow book (at a very sensible price from a bookshop in Sweden) and found that the content is good historically but the site is fantastic for us who are building and operating these machines.

Henry