Found in the Glasgow area by Eddie McLean.

The ‘D’ within a Diamond is the trademark of Dyson Refractories Ltd who were based in England. They bought over the James Dougall, Bonnybridge Works.

These Dyson bricks were made at the East Works at Bonnybridge (Dougall/Dyson site).

James Dougall & Sons Ltd, Bonnybridge, Stirlingshire

Alternative brickworks include:

  • Bonnyside Brickworks, Bonnybridge, Stirlingshire.

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