An example of this brick is still to be found however the leaflet depicted below confirms its existence.
Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge, Scotland
Bonnybridge Brand – for general steel use.
Calder L – Manufactured exclusively for use in steelworks ladles.
Calder – A first class Scotch firebrick with superior spalling resistance
Octo – For highest heat duty in the firebrick range – combines slag resistance with good resistance to spalling.
Novo Fifty – These are finding themselves more applications in the severest temperatures zones of modern furnaces.
Novo Sixty – These are finding themselves more applications in the severest temperatures zones of modern furnaces.
Novo – Sillimanite – These are finding themselves more applications in the severest temperatures zones of modern furnaces.
BSF ( Semisilica ) – recommended for reheating furnace roofs and similar applications.
Bonsil Plastic Refractories – growing field of application for monolithic and in situ construction.
Boncrete Refractory Castables – growing field of application for monolithic and in situ construction
BS Refractory Mortars & Cements – For all refractory jointing purposes.
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.
Found by Ian Suddaby near Ravenscraig, Motherwell. This example is not in my possession. Ian states – It’s a shame the markings on many of these relatively modern basic bricks are so faint. At least I can just read this one. Why is the C a bit smaller? SPINELLA MC So this was made by General Refractories…
Found by Ian Suddaby near Ravenscraig, Motherwell. This example is not in my possession. 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.
Found by Ian Suddaby in Perth. This example is not in my possession. 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.
Found by Ian Suddaby in Perth. Perhaps the stamp is meant to read ‘Perth’ ? This example is not in my possession. 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.
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’….
Found by Ian Suddaby at the Manuel Works, Whitecross. This example is not in my possession. The example below is a hanger brick. 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.
Found by Ian Suddaby at the Manuel Works, Whitecross. This example is not in my possession. ST – Possibly stands for ‘Stein’. Note the reversed ‘S’. The example below is a hanger brick and although the manufacturer is not stamped, the find location is highly suggestive that this is a Stein product. Stein, Castlecary Fireclay…
Found by Ian Suddaby at the Manuel Works, Whitecross. This example is not in my possession. Stein made such bricks under licence. M. H. Detrick – The M.H. Detrick Company is a heat refractory manufacturing company, based out of Mokena, Illinois. The company primarily sells suspended refractory constructions and industrial heat enclosures to various businesses. Founded…
Graces Guide Information – Mini-conglomerate, of Glasgow; interests in packaging, wine, animal feedstuffs and engineering. 1960 Norcros launched a second associated public company, Scotcros, to handle Scottish businesses. 1961 Acquired Wilkie and Paul, makers of metal tins. 1962 Acquired Thomas Bishop, maker of commercial catering equipment and other engineering products. 1971 Acquired Unit Body Developments from RTZ Pillar and BPB Industries….
The following Scottish bricks were found by Tracie Perrie on the shore at Borden, Prince Edward Island, Canada. Below – ‘Glenboig’. Glenboig Union Fireclay Company, Glenboig, Lanarkshire. Alternative brickworks include: Glenboig Star Fireclay Works, Glenboig, Lanarkshire. Glenboig Fireclay Works, (Old Works) Glenboig, Lanarkshire Below – ‘Gartcraig Scotland Gaskil’. Gartcraig Fire Clay Works, By Millerston, Glasgow….
