Old technology is often embraced purely on the basis of nostalgia, I prefer to see it preserved on the basis that it may hold a value that could be employed in the future. Recently asked to replicate blue touchpaper as it's burning characteristics were specifically needed in a contemporary device. We did oblige the client and it was a pleasure doing so. Researched the subject and this threw up some very interesting and satisfying stuff. There were three companies producing this in the "glory days", none interested now but one company only recently disposed of the equipment. The story that emerged was that the process was refined by a German chap before the second world war, machinery was developed and put into service, the german worked like mad to make it happen and as the anticipated announcement of hostilities drew ever closer he worked harder and harder to get the job up and running. He was given notice to leave the U.K. as he was considered an "alien" and managed - but only just - to sort the job out for the companu (in the midlands) before disappearing presumably to fight us!!! I found this a charming story and incredibly sad at the same.