Key providing information regarding the use of symbols on underground mine maps generated by and provided to the Minnesota Department of Conservation, now the Department of Natural Resources.
Cross section illustrating a use of a mill and conveyor method to extract iron ore. Refer to Skillings Magazine volume XXVIII pp. 1 & 6-7 for more information regarding this process.
Iron Mining; Eveleth, MN; Oliver Iron Mining Company;
Document describing a collection of records held at the Iron Range Research Center documenting the activity of the Boundary Waters Conservation Alliance.
Document describing a collection of archival material held at the Iron Range Research Center Documenting the life and career of Rudy Perpich, Governor of the State of Minnesota
Rudolph G. Perpich; Delores H. Perpich; Politics; Political Campaigns;
Document describing a collection of archival material held at the Iron Range Research Center Documenting the activity of Minnesota State Representative Fred A. Cina.
Politics; Politicians; Iron Mining; Taxes; Fred A. Cina;
Document describing a collection of records held in the Minnesota Discovery Center Archives documenting the activity of the Butler Brothers and Hanna Mining Company.
