California Historical Landmarks in Nevada County
California Historical Landmark 852
North Bloomfield Mining and Gravel Company
North Bloomfield Road
Malakoff Diggins State Historic Park
This was a major hydraulic gold-mining operation in California. It boasted a vast system of canals and flumes, its 7,800-foot drainage tunnel was termed a feat of engineering skill. It was the principal defendant in an anti-debris lawsuit settled in 1884 by Judge Lorenzo Sawyer's famous decision, which created control that virtually ended hydraulic mining in California.
Citation from California Office of Historic Preservation