Drawer 29 C14 A
Container
Contains 1 Result:
2-2 C Drill hole maps & data from Syncline, 1909, 1957-1961
File — drawer: 29 C14 A
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:
1909, 1957-1961