The Engels mine (Engles mine, Engle mine) was an underground copper mine near Taylorville, California. The Engels Copper Mining Company was formed in 1906 after the discovery of rich copper ore bodies in Plumas County. The ...

The diagram shows a plan view, side view, and end view of a Klansnick safety man-car.

The Anvil Palms Mine (Anvil-Palms-Keweenaw Mine Group) is located in Gogebic County, Michigan in the Gogebic Range. Both the Anvil and Palms mines were opened in 1886. The mines were consolidated in 1923 with the Keweenaw ...

The illustration shows the placement of drill holes in a longitudinal section, top breast cut, at the Soudan mine. Iron ore was discovered on the site of the Soudan mine near Vermillion Lake, Minnesota in 1865. The Soudan ...

The illustration shows the placement of drill holes in longitudinal and cross sections at the Soudan mine. Iron ore was discovered on the site of the Soudan mine near Vermillion Lake, Minnesota in 1865. The Soudan mine ...

The Newport mine in the Gogebic district near Ironwood, Michigan began operations in 1884. It was operated by the Newport Mining Company, then eventually by Pickands, Mather & Company.

The illustration shows the placement of drill holes at the Soudan mine. Iron ore was discovered on the site of the Soudan mine near Vermillion Lake, Minnesota in 1865. The Soudan mine was opened by the Minnesota Iron ...

A diagram of a safety chamber door includes a sign "Safety Chamber: In case of gas close door and turn on air."

The diagram shows a cross section of single track and double track drifts.