The team head for a pub in Leighton, whose cellar contains the remains of a blast furnace once used for smelting iron. When Tony arrives, test pits are already being dug, and Geophysics are busy surveying the car park. They are joined by Paul Belford from Ironbrige Gorge Museum; and Jonathan Roberts shows Phil how to make a triangular charcoal clamp similar to those used in the 17th century. Mick visits the nearby Blists Hill Victorian Town, where Roger Fewtrell demonstrates making a 24 pound cannonball. They are also joined by researcher Colin Thom, industrial archaeologist Rob Kinchin-Smith, archaeometallurgist Gerry McDonnell, and finds expert Ceinwen Paynton.