Worker stands atop machinery outside of mill in Sinaloa, Mexico.

Pioche locamotive on an elevated railroad track running through a mill. The city of Bullionville was founded by John H. Ely and W.H. Raymond in 1870, but is now a deserted settlement and a ghost town.

Homes and the mill amalgamated on a hilltop. Smoke rises above the buildings, and mountains can be seen in the background.

Building structures in a mining operation area sit in a valley surrounded by mountains and desert. Three buildings are visible on the sandhill.

Aerial view of building structures in a mining operation in a mountain valley. The buildings are surrounded by desert plants and hills.

Overlooking building structures in a mining operation area surrounded by mountains and desert in Pioche.

Building structures in a mining operation area surrounded by mountains and desert. Several small structures stand near one another, with a wagon off in the distance.