Calder L

Found Newmains, North Lanarkshire

Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge.
alt
Calder Firebrick Works, Airdrie, Lanarkshire.
alt
Chapelhall Works, Lanarkshire.

Hepworth Ceramic Holdings plc (GR-Stein Refractories Ltd. parent co) bought the Bonnybridge Silica & Fireclay Co. Ltd in 1972, closed Bonnybridge works in 1973 and closed Chapelhall in 1980. Therefore between 1972 and 1980, GR-Stein Refractories probably continued to manufacture bricks with this trademark for a time.

Below – Virtually the same stamp but with a slight variation in the gap betwen the lines. Found by Graham Tait (Tattie) at Drum Farm, Bonnybridge.

Below – Virtually the same stamp on a larger brick but with a slight variation in the gap betwen the lines. Found at Drum Farm, Bonnybridge.

Similar articles