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| | California Gold Rush - Wikipedia, the free encyclopedia |
 | | Gold miners excavate a gold-bearing bluff with jets of water at a placer mine in Dutch Flat, California sometime between 1857 and 1870. |
 | | Both during the Gold Rush and in the decades that followed, gold-seekers also engaged in "hard-rock" mining, that is, extracting the gold directly from the rock which contained it (typically quartz), usually by digging and blasting to follow and remove veins of the gold-bearing quartz. |
 | | For example, in the midst of the Gold Rush, towns and cities were chartered, a state constitutional convention was convened, a state constitution written, elections held, and representatives sent to Washington, D.C. to negotiate the admission of California as a state. |
| en.wikipedia.org /wiki/California_Gold_Rush (5690 words) |
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