Fred, Alf and Jimmy continue their investigation of the Black Country by watching the skills of an authentic chain maker, producing chains in the same way as they would have been in 1910. After all that hard work they sit down to enjoy fish and chips washed down with a pint of local ale. They have a long journey ahead, travelling all the way from Dudley to Anglesey to visit Parys Mountain, a vast copper mine that was once the largest in the world. The copper from Parys Mountain would be made into sheets and taken to a copper spinner just like the one Fred goes to visit in the East Midlands. The spinning process may look easy but, as Fred discovers, there is a lot of skill involved. After leaving Anglesey they travel further down into Wales making an overnight stop at Ffestiniog railway, originally built to transport slate from Ffestiniog to Porthmadog. While the others look after the traction engine, Fred enjoys a ride and drive on the footplate of an 1891 slate shunting engine. He also takes a look around the maintenance yard where he sees Prince - possibly the oldest working steam engine in the world, dating back to 1863.