Iron ores of Minnesota, their geology, discovery, development, qualities and origin, and comparison with those of other iron districts, Bulleitin 6, Plate 3Full Details
Iron ores of Minnesota, their geology, discovery, development, qualities and origin, and comparison with those of other iron districts, Bulleitin 6, Plate 3
Description:
Map showing the Pioneer iron mine, surveyed July 13, 1889, scale 1 inch = about 6.25 feet.
Creator:
Winchell, Horace V. (Horace Vaughn), 1865-1923 and Winchell, N. H. (Newton Horace), 1839-1914