California's Mines After the Gold Rush As gold became more and more difficult to reach, the growing industrialization of mining drove more and more miners from independence into wage labor. The new technique of hydraulic mining, developed in 1853, brought enormous profits but destroyed much of the region's landscape.
T<span>hat it was extremely limited, due to the fact that the
Southern states implemented Jim Crow laws practically immediately after
the Civil War ended. </span>
