Alundum

Raw Materials for Cement Calcareous such as Lime stone, Chalk Argillaceous materials such as clay slate shales, Coal and Gypsum.

Glass

Soda lime glass or soft glass, Potash lime or hard glass, Flint glass or Lead glass, Pyrex glass or borosilicate glass, Alumino-silicate glass, Vitreosil or Silica glass.