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1. Map showing dam project of the Pigeon River Lumber Company, Cook County, Minnesota

Date Created:
1924 - 1934
Description:
Map shows location of proposed hydroelectric dam sites on the Pigeon River in Cook County, Minnesota and Ontario, Canada.
Contributing Institution:
Cook County Historical Society
Type:
Cartographic
Format:
Engineering maps

2. Soudan Mine, No. 8 Shaft, 18th Level (Map One), Soudan, Minnesota

Creator:
Oliver Iron Mining Company
Date Created:
1919-01-01 - 1944-01-01
Description:
A map of the 18th level at the Soudan Mine starting from the No. 8 Shaft going west. The map shows the drifts, cross cuts, rock formations, raises, core sample drill holes, and stope areas. Lake Superior Datum.
Contributing Institution:
Soudan Underground Mine State Park
Type:
Cartographic
Format:
Engineering maps

3. Soudan Mine, No. 8 Shaft, 18th Level, Montana (Map Three), Soudan, Minnesota

Creator:
Oliver Iron Mining Company
Date Created:
1930-01-01
Description:
A map of the 18th level at the Soudan Mine continuing from Map One going west. The map shows the drifts, cross cuts, rock formations, raises, core sample drill holes, and stope areas. Lake Superior Datum.
Contributing Institution:
Soudan Underground Mine State Park
Type:
Cartographic
Format:
Engineering maps

4. Soudan Mine, No. 8 Shaft, 15th Level, Soudan, Minnesota

Creator:
Oliver Iron Mining Company
Date Created:
1914-01-01 - 1940-01-01
Description:
A map of the 15th level at the Soudan Mine starting from the No. 8 Shaft going west and a portion to the east. The map shows the drifts, cross cuts, rock formations, raises, core sample drill holes, and stope areas. Lake Superior Datum.
Contributing Institution:
Soudan Underground Mine State Park
Type:
Cartographic
Format:
Engineering maps

5. Soudan Mine, No. 8 Shaft, 20th Level, Soudan, Minnesota

Creator:
Oliver Iron Mining Company
Date Created:
1924-01-01 - 1939-01-01
Description:
A map of the 20th level at the Soudan Mine starting from the No. 8 Shaft going west. The map shows the drifts, cross cuts, rock formations, raises, core sample drill holes, and stope areas. Lake Superior Datum.
Contributing Institution:
Soudan Underground Mine State Park
Type:
Cartographic
Format:
Engineering maps

6. Soudan Mine, No. 8 Shaft, 18th Level, West (Map Two), Soudan, Minnesota

Creator:
Oliver Iron Mining Company
Date Created:
1931-01-01 - 1932-01-01
Description:
A map of the 18th level at the Soudan Mine continuing from Map One going west. The map shows the drifts, cross cuts, rock formations, raises, core sample drill holes, and stope areas. Lake Superior Datum.
Contributing Institution:
Soudan Underground Mine State Park
Type:
Cartographic
Format:
Engineering maps
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