[Ultrainferno]

I found these series of film on Youtube about how tubes were made in the Mullard plants in the UK.
The search engine didn't give me any results, so sorry if these were posted before or if this is in the wrong forum.
 
Part 1: http://www.youtube.com/watch?v=xnvKCC6_VDQ
Part 2: http://www.youtube.com/watch?v=qSDDNg4Zb3w
Part 3: http://www.youtube.com/watch?v=8ztjI4geVRA
Part 4: http://www.youtube.com/watch?v=wDgOuI-RzgY
Part 5: http://www.youtube.com/watch?v=1qMvhxo6B84
Part 6: http://www.youtube.com/watch?v=Cyt9VvIzhSY
 
enjoy!