This is in the possession of John Ballantyne. It is a roll of plastic tape. John states – I think ram mix was the clay mix used to seal the tap hole of the blast furnace after the cast was completed. There was quite a bit of research/trialling done to get the mix ‘fit for…
I believe the ‘spin’ stands for spinel or spinella.
Spinella was a trademark of General Refractories (GR) and manufactured at their Worksop Works. When GR and John G Stein and Co amalgamated (GR-S) it is likely that Spinella bricks continued to be manufactured at Worksop but it is possible that manufacture was switched to the GR-S Manuel Works, Linlithgow to suit demand but this would have meant production plant modification. (For research but in the meantime, I will record them on my website due to the brand connection with a Scottish manufacturer).
- Stein, Castlecary Fireclay Works, Castlecary, Stirlingshire.
- Stein, Manuel Firebrick and Refractory Works, Whitecross, Stirlingshire.
- Stein & Co, Anchor Brickworks, Denny, Stirlingshire.
- Milnquarter Fireclay & Gannister Works, Bonnybridge, Stirlingshire.