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Heat Insulation. 1950. Mentions 85% Magnesia, Asbestos Pipe Covering, and Corrugated Asbestos Paper.
Sound Control and Thermal Insulation of Buildings. Table on Perforated Asbestos Cement Board Panels includes products from Armstrong Cork Co, Elof Hansson Inc, Wood Conversion Co, Johns-Manville Sales Corp, Wood Conversion Co, and The Celotex Co.