Dear slag fans Just wondered whether anyone feels they're recognised any patterns ( date/technology/region) in the occurance of the tube-shaped pieces of slag which turn up from time to time. I've just come across some nice examplef ( from a supposed smithing site but I'm assuming it's residual from earlier smelting activity). I've also assumed such forms occur where someone has rodded through a blocked tapping arch and the resultant flow solidifies in the hole formed. Any other hypotheses? Cheers, Dave David Starley PhD AIFA 75 Albert Rd. Shipley W.Yorks UK BD18 4NS T: 01274 586 272 E: [log in to unmask] W: (archaeometallurgy) www.davidstarley.com W: (art) www.saa.co.uk/art/davidstarley