Calder

Found by Eddie Mclean in the Glasgow area.

With thumb print to top right.

Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge.
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Calder Firebrick Works, Airdrie, Lanarkshire.
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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 – The specials below were found near to the old site of the Calder Ironworks and the Calder Fireclay works on the banks of the river. It is believed they are examples of saddle or boiler flue covers. Some are stamped to the end while others are stamped on the inner curve. The stamp itself is slightly different in each example. All the examples are of the same size.

Below – Example 1

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Below – Example 2

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Below – Example 3

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Below – 2 photos showing the extent of the curve on this specials.

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