The Adventure Mine is a copper

Copper

Copper is a chemical element with the symbol Cu and atomic number 29. It is a ductile metal with very high thermal and electrical conductivity. Pure copper is soft and malleable; an exposed surface has a reddish-orange tarnish...

 mine

Mining

Mining is the extraction of valuable minerals or other geological materials from the earth, from an ore body, vein or seam. The term also includes the removal of soil. Materials recovered by mining include base metals, precious metals, iron, uranium, coal, diamonds, limestone, oil shale, rock...

 near Greenland, Michigan in Ontonagon County, Michigan that operated from 1850 to 1920. The mine has five shafts. It is open for tours from late May to mid-October, under the operation of the Adventure Mining Company.

1850-1920

In 1850, the Adventure Mining Company (unrelated to present company) was formed and operated a mine until 1862. In 1863, it was purchased by Thomas Mason and named the Adventure Copper Company. Starting in 1898, the property was operated by the Adventure Consolidated Copper Company. Production ceased in 1908 due to low copper prices, but restarted for a short time during World War I. Production finally halted in 1917 and the mine closed in 1920.

1970-present

Beginning in the 1970s, tours have been available on and off. Jack and Margaret Neph purchased the mine in 1972 and offered tours from 1973 through the mid 1980s. Their son John, along with his wife Winnie, offered tours from the late 1990s until 2003. The current owners, the modern Adventure Mining Company owned by Matthew and Victoria Portfleet, purchased the mine in 2004 and have operated tours since 2005.