We too are in the process of buying a property in Limousin, Chirac. We have travelled a little in this area and have been to Dun le Palastel, the only industry that we have seen is what you would expect in/around a large town (Limoges) and a paper factory near Saint Junien, none of which we found obtrusive. Good luck with your holiday home, we may bump into each other in a hypermarket!