Excerpt from Special Reports on the Mineral Resources of Great Britain, Vol. 16: Refractory Materials, Ganister and Silica-Rock, Sand for Open-Hearth Steel Furnaces, Dolomite, Petrography and Chemistry

Thanks are due to Mr. Arthur Acton who has furnished valuable information and advice on the raw material and process of manufacture, and to Dr. Pollard, late Chemist to the Geological Survey, who has kindly read Chapter X. Towards which he has contributed valuable suggestions. Thanks should also be accorded to a number of private individuals and firms who have rendered assistance to our officers in the field and who have been so ready to supply information and material. For the purposes Of this Memoir. Special thanks are due to the South Durham Steel and Iron 00. (malleable Works) who through their chief chemist, Mr. J. H. Whiteley, have furnished material Of the greatest assistance in the preparation of those portions of the Memoir dealing with the furnace-structure, and also to Dr. J. E. Stead, for permission to publish his analyses of a brick that has been used in the roof of a steel-furnace, and for the loan of micro-sections.

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