Dear Noel, Yes, in part anyway. However, Sulphur (and Manganese), was previously acquired from various other parts of the World as well of course. Sicily, and then there was Elba, but these two places were somewhat 'out of bounds' at that time! The Americans supplied vast quantities, but shipping losses did create potentially dangerous shortages from time to time. So, the UK mineral resources came under scrutiny again, via The Ministry of Supply (who had very high level authorisation), and financed all sorts of exploratory and production work all over the British Isles for everything from Lead, Zinc, Mica, Tungsten, to other 'strategic' minerals (one or two 'production projects' were a bit dubious as well - but we will not go into that!). These 'emergency' facilities were simply just 'getting' mineral whatever the cost, and most, if not all of these operations, were only intended as emergency stopgaps and ceased production immediately the war ended - and before in some cases after the Battle of the Atlantic when shipping could move in relative safety once more. Virtually the same thing happened in WW1, but the pressure did not seem quite so extreme (we did actually have the vestiges of a home mining industry at that time anyway! - apart from coal obviously), so it was more 'important topping-up' than anything else - but valuable all the same. If anyone is thinking of writing a book..... 'The British Mining Industry at War' (or somesuch title to cover WW1 & WW2), I would be pleased to supply Mss & info.! This 'work' could cover other Countries than the UK if wished, since Britain was still producing in India, Canada, Australia, and South Africa - just to name some. Anyway......! Sorry for a few more words than intended, but it is an interesting subject! Regards, Bernard.