The Winning of Clays and Shales
THE greater portion of the information presented in this paper was obtained in the course of an investigation on clay gathering and its cost in the provinces of Quebec and Ontario (1). For assistance in the preparation of the paper, the writer wishes to record his thanks to Mr. Howells Fréchette, Chief of the Ceramics and Road Materials Division of the Mines Branch.
Keywords:
Clay, Clay Clay Clay Clay, Ontario, power shovel, Quebec, Shale Planers, Clays, Deposits, Equipment, Materials, Operation, Plants, Shale, Shales
