These miners' giants, also known as water cannons, monitors and dictators, washed hillsides away with high pressure water, uncovering gold bearing beds. This mining technique flourished profitably until 1884. Rivers were being filled with mud and debris causing flooding of the rich farm lands in the valley.
At that time, a lawsuit brought by farmers against hydraulic mining was heard in Marysville, California where a decision known as "The Sawyer Decision", stopped all mining.
Under a special use permit, granted by the Department of Fish and Game, these hydraulic monitors were last used at the Pacific Slab Mine near Foresthill, California in 1970, which was documented by the California Department of Parks and Recreation.
Erected 2010 by Grand Parlor, Native Sons of the Golden West. (Marker Number 2009-7.)
Marker series. This marker is included in
Location. 39° 16.085′ N, 121° 1.625′ W. Marker is in Nevada City, California, in Nevada County. Marker is on Golden Chain Highway (California Route 49) 0.7 miles north of California Route 20, on the right when traveling north. The marker is between Maidu Avenue and Cement Hill Road, in front of the county jail. Touch for map. Marker is in this post office area: Nevada City CA 95959, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within walking distance of this marker. American Hill Diggings (about 500 feet away, measured in a direct line); Pioneer Cemetery (approx. ¼ mile away); Pioneer Emigrant Trail (approx. 0.3 miles away); Nevada City Methodist Church (approx. half a mile away); Pennsylvania Engine Co. No. 2 (approx. half a mile away); Ten Stamp Mill (approx. half a mile away); Nevada Theater (approx. half a mile away); Nevada City Public Library (approx. half a mile away). Touch for a list and map of all markers in Nevada City.
Also see . . . The Sawyer Decision. "On January 7, 1884, after two years of litigation in the case of Woodruff vs. North Bloomfield Gravel Mining Company and over 2,000 witnesses with 20,000 pages of written testimony taken during the trial, Judge Lorenzo Sawyer’s decision was handed down. This decision did not stop miners from using the (Submitted on December 28, 2019, by James King of San Miguel, California.)
Categories. • Industry & Commerce •
More. Search the internet for Hydraulic Mining.
Credits. This page was last revised on December 29, 2019. This page originally submitted on December 28, 2019, by James King of San Miguel, California. This page has been viewed 53 times since then and 6 times this year. Last updated on December 28, 2019, by James King of San Miguel, California. Photos: 1, 2, 3, 4. submitted on December 28, 2019, by James King of San Miguel, California. • Syd Whittle was the editor who published this page.