Found at the Calder Ironworks, Coatbridge by Ian Suddaby.
This example is not in my possession.
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 short side is 9″ long. The top side is 21″ long. The curved side is 23″ long and the bottom side is 22″ long. It’s 4 1/2″ thick.
Below – Find location on the banks of the North Calder Water.
Found by Franco Andrés at Rosario, Santa Fe, Argentina. Franco states – I’m a mechanical engineer from Argentina. I was looking for information about this brick and found your website. I’m currently working at an old technical school. The building has a boiler room, built between 1934 and 1937. One of my coworkers found some of…
Found by Gary Fritson on the River Tees at Middlesbrough. 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…
Found by Ian Suddaby at This example is not in my possession. The ‘C’ of Calder is missing. 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…
Found by Eddie McLean in the Glasgow area. 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…
Found by Patricio Peralta in an old bakery, Lincoln, Provincia de Buenos Aires, Argentina. “Calder British Made”. 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…
Found by Senja Salmi in Sääksjärvi, Mäntsälä, Finland. Senja states – We are not sure how old this house is but at least about 100 years old and it was built by the last blacksmith of this village. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge. alt Calder Firebrick Works, Airdrie, Lanarkshire. alt Chapelhall Works, Lanarkshire….
Many thanks to Bruce MacDonald for the following photographs which were taken at The Sunbury Plantation House, St Philip Parish Barbados. All the bricks present were fire bricks and included English manufacturers such as Ruffors of Stourbridge, Cowen of Newcastle and Duddell of Fenton. 90% of the bricks present appear to have been stamped ‘Glenboig’….
Many thanks to Chris Lowe for the following information. Chris states the bricks were found in an old fireplace on his family’s property in Oregon, USA. There may be a thumbprint to the top right. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge. alt Calder Firebrick Works, Airdrie, Lanarkshire. alt Chapelhall Works, Lanarkshire. Hepworth Ceramic Holdings…
Thanks to Mark Norstad for the following information. . Mark states – The ‘Heathery Knowe’ was found underneath an old house in Marin County, CA (near San Francisco). The age of the house is unknown. Below – Heathery Knowe Patent Glasgow – Heatheryknowe Fire Clay Works, Glasgow. (Note – SBH – Heathery Knowe appears to be…
Found by Jim in the Sheffield area. This example is not in my possession. 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…
