I won't go into the history of the Leadfield mining district in Titus Canyon, CA, except to say that the sign does not give the entire history, and that real copper and lead discoveries were made there in the early 1900's. See links below.
A photo overview of part of the Leadfield town, with colorful grey to pale orange mine dump. I didn't knock around on this dump, so I don't know what was being brought out of the ground, but the grey matches the color of the local limestone.
A window through a door.
Rust and paint.
The view from one of the cabin windows.
An attempt to keep people out of one of the historic mine adits.
Sun on a rusty wall.
Window and wall.
Death Valley Ghost Towns: National Park Service
Leadfield, California: Ghost Town Explorers
Leadfield, California: Wikipedia
Leadfield Ghost Town: Mojave.net