Drawer 29 B14 B
Container
Contains 2 Results:
8-3 B Isle Royale surface drill sections section 12 drilling exploration, 1908-1917
File — drawer: 29 B14 B
Collection Scope and Content Summary
From the Collection:
Map collection, circa 1896-circa 1966, of the Calumet and Hecla Mining Company in Michigan's Keweenaw Peninsula. Includes geological maps of surface and underground mines and properties owned by the company as well as properties owned by other entities. Also includes some mechanical drawings of machinery and building plans for company-owned buildings.
Dates:
1908-1917
8-3 D Isle Royale Underground, Isle Royale Amygloid working mine maps, 1897-1931
File — drawer: 29 B14 B
Collection Scope and Content Summary
From the Collection:
Map collection, circa 1896-circa 1966, of the Calumet and Hecla Mining Company in Michigan's Keweenaw Peninsula. Includes geological maps of surface and underground mines and properties owned by the company as well as properties owned by other entities. Also includes some mechanical drawings of machinery and building plans for company-owned buildings.
Dates:
1897-1931