Malcolm mentions the "clinker" or as I would call it "foundry slag".  I too have a piece of this from the same site in Newcastle, Ontario which I probably treasure above all my other artifacts and memorabila.  WHY?  Well quite simply because they are possibly the oldest Massey artifacts in existence.  Craig, as now the senior Massey historian in Ontario, Canada would you care to comment as you may well have seomething of the same vintage in you astounding collection of Massey treasures?

John