Between 1815 and 1915, approximately 250,000 people left Cornwall as its tin and copper mines began to fail.
If you'd like to the video or need help identifying where you found the file, I can look for more specific details:
A conference at Kresen Kernow on June 10, 2026, focusing on Victorian newspapers and mining.
The term carries deep cultural significance for the Cornish people:
England - Cornwall - I'm alright Jack - Article Page 1 - BBC
They established significant communities in Michigan's "Copper Country," Australia, Mexico, and South Africa. 🎥 Related Media and Research