Googling about, presumably this is a reference to mining of Iron slag in Tuscany, as left behind by an inefficient but vast Etruscan smelting industry? I'm unclear (can't be alone in that...), but several sites seem to think this activity is what revealed many Etruscan tombs to archaeology, them having been buried further by rather a lot of slag. No idea how directly Musso was involved, though there's quite a bit out there about Politics in Italian mines...
That's interesting off to goggle for a look making sure I use the term mining slag hehe. Many former slagheaps today are being melted again, new methods are used. When metal prizes start to go up the more profittable it gets to melt them again. I heard the Greeks are doing the same thing now with the ancient goldmining heaps (do not know if these are slags). We even import slags from Africa to Europe to re-melt them here. You can find many nice cristallized minerals in it (even Silver!) Greetings Jack.
I heard the Greeks are doing the same thing now with the ancient goldmining heaps (do not know if these are slags). We even import slags from Africa to Europe to re-melt them here. You can find many nice cristallized minerals in it (even Silver!) Yep, I've heard of privateers "prospecting" through slagheaps and arsenic pools in old U.S. goldmines; as well as some silver, lead is the most common valuable metal to be found there...and some mercury IIRC. But of course...there's the arsenic... :p It's a profitable but dangerous way of earning, for obvious reasons...