The Detroit and Lake Superior Smelter was a copper smelter located near Hancock, Michigan

Hancock, Michigan

Hancock is a city in Houghton County; the northernmost in the U.S. state of Michigan, located on the Keweenaw Peninsula, or, depending on terminology, Copper Island. The population was 4,634 at the 2010 census...

 on the Keweenaw Waterway

Keweenaw Waterway

The Keweenaw Waterway is a partly natural, partly artificial waterway which cuts across the Keweenaw Peninsula of Michigan; it separates Copper Island from the mainland. Parts of the waterway are variously known as the Keweenaw Waterway, Portage Canal, Portage Lake Canal, Portage River, Lily Pond,...

. It was opened in 1860 by the Portage Lake Copper Company. The company later merged with the Waterbury and Detroit Copper Company to form the Detroit and Lake Superior Company.. The Calumet and Hecla Mining Company

Calumet and Hecla Mining Company

The Calumet and Hecla Mining Company was a major copper-mining company based in the Michigan Copper Country. In the 19th century, the company paid out more than $72 million in shareholder dividends, more than any other mining company in the United States during that period.-History:In 1864, Edwin J...

 used the smelter until it built its own near Hubbell, Michigan

Hubbell, Michigan

Hubbell is an unincorporated community in Houghton County in the U.S. state of Michigan. The U.S. Census Bureau has defined an area around the community as a Census-designated place for statistical purposes. As of the 2000 census, the CDP population was 1,105...

 and Black Rock, New York in 1887 and 1891 respectively.