Abstract Drawings, 1871-1970, of the Calumet and Hecla Mining Companies. Contains hand sketches, tracings, blueprints and related manuscript items as well as a card index created by the company. Includes more than 80,000 engineering and architectural drawings gathered by the Calumet and Hecla Mining Company during its active life as a copper mining company in Michigan’s Keweenaw Peninsula. Much of the machinery was built in-house at Calumet and Hecla and they also had need of maps of both aboveground...

Abstract

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.

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Blueprints, circa 1890-circa 1946, of the Nordberg Manufacturing Company of Milwaukee, Wisconsin. Includes blueprints of valve engines, pumps, hoists, compressors, and similar equipment, much of which was used by mining companies in Michigan's Upper Peninsula.

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Collection, 1860-1979, of the Quincy Mining Company in Hancock, Michigan. Drawings include commercial, domestic, industrial, and public buildings, machinery, subterranean maps, surface maps, transportation systems, utilities, and tools.