A discovery at Sutter's Mill in 1848 began, for 10 points, what mining boom that helped cities like San Francisco grow?
Early participants in this event traveled south to Coloma using the Siskiyou Trail. This event began at the South Fork of the American River at a water wheel built by James Marshall. Its participants used equipment like (*) long-toms, cradles, and pans and faced legal issues like claim jumping. A discovery at Sutter's Mill in 1848 began, for 10 points, what mining boom that helped cities like San Francisco grow?
Early participants in this event traveled south to Coloma using the Siskiyou Trail.
California Gold Rush (accept clear knowledge equivalents for "gold rush;" prompt on partial answer)