Report on the present and prospective output of the mines of the silver-cobalt ores of the Cobalt district
By: by Eugene Haanel, Ph. D., superintendent of mines.
Contributors: Haanel, Eugene, 1841-1927.
Publisher: Government Printing Bureau
Published: 1907
Place of publication: Ottawa
Language: eng
Number of pages: 13
Subjects: Silver mines and mining -- Ontario.; Cobalt mines and mining -- Ontario.