Despite advances in technology, Terry Prebalick said techniques ... Americans in California. Many Black Americans garnered wealth during the gold rush by opening up shops and mining for gold.

On the outskirts of the Northern California ... mine shaft drops 3,400 feet into the earth. These are the remains of Grass Valley’s Idaho-Maryland Mine, a relic from the town’s gold-mining ...

Within less than a decade, they went home, and the Gold Rush ... in California. That didn’t mean, though, that the gold-mining industry collapsed. In fact, “lode” mining, the method used ...

On the outskirts of the northern California ... a mine shaft drops 3,400 feet into the earth. These are the remains of Grass Valley's Idaho-Maryland Mine, a relic from the town's gold mining ...

As the mining region grew more crowded, there was less ... California's native people, one hundred and twenty thousand Native Americans died of disease, starvation and homicide during the gold rush.