Lake Superior iron ores
Subtitle: mining directory and statistical record of the Lake Superior iron ore district of the United States and Canada.
Edition: 2d. ed.
Publisher: Lake Superior Iron Ore Association
Published: 1952
Place of publication: Cleveland, Ohio
Language: eng; yid
Number of pages: 334
Subjects: Iron ores -- Superior, Lake.; Iron mines and mining -- Superior, Lake.; Iron ores -- Statistics.; Iron mines and mining -- Statistics.
Genres: Statistics.
Notes: One map in pocket.