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of 791 Salisbury House, London Wall, London, EC2. Telephone: METropolitan 3801. Telegraphic Address: "Platoons, Ave, London"
1921 Company established.
1937 Listed Exhibitor - British Industries Fair. Sillimanite Refractories, comprising Bricks, Blocks, Tubes, Insulators, Ramming Mixtures, Cements, Protective Coatings for Firebricks and Insulating Firebricks, Tank Blocks, Pyrometer Sheaths and Insulators. Refractories for every type of furnace and fuel. (Stand No. Cb.604) 
1939 Patent - Improvements in and relating to refractory materials.
1973 Patent - Coating composition suitable for use at high temperatures.