The iron ores of Lake Superior
Subtitle: containing some facts of interest relating to mining and shipping of the ore and location of principal mines.
Edition: 4th ed., with original maps of the ranges, by Crowell & Murray.
Publisher: The Penton press
Published: 1920
Place of publication: Cleveland
Language: eng
Number of pages: 285
Subjects: Iron ores -- Superior, Lake; Mines and mineral resources -- Superior, Lake