Milling plants in Canada.
Published: 1946
Place of publication: [Ottawa
Language: eng
Subjects: Mines and mineral resources -- Canada.
Notes: At head of title: Canada.  Dept. of Mines and Resources.  Mines and Geology Branch.  Bureau of Mines.  Mineral Resources Division.

Pt. I (Operators of concentrating mills treating metallic ores) issued Jan. 1947; Pt. II (Operators of concentrating plants treating industrial minerals), issued July 1946.