The case of Woodruff v. North Bloomfield Gravel Mining Company was a lawsuit brought to California courts in 1882 where a group of local farmers sued North Bloomfield Mining and Gravel Company over damages caused to farmland in the Central Valley. The farmers who brought the suit claimed that the company's hydraulic mining operations (which were used to mine gold in the years following the California Gold Rush) resulted in the disposal of excess sediment, debris, and chemicals in local rivers. Prosecutors argued that the debris raised river beds and restricted flow in the rivers leading to heavy man-made flooding. In the years prior, flooding of debris and chemicals had destroyed a large portion of the valley's agriculture.
After two years of deliberation, the judge presiding over the case, Lorenzo Sawyer, ultimately ruled in favor of the farmers. Based on testimony and evidence reviewed, Sawyer decided that mining debris posed dangers to private land, particularly private lands in the agricultural sector. Ultimately, Sawyer's decision limited hydraulic mining operations in California and was considered to be the first major environmental law in California. The site of North Bloomfield Mining and Gravel Company's largest mine, Malakoff Diggins, is now a California State Historic Park located near Nevada City, California.
California Gold Rush
Discovery of Gold
The first gold in California was discovered by James W. Marshall at Sutter's Mill in Coloma on January 24, 1848. Marshall, who worked for Captain John Sutter, the founder of Sutter's Fort, had been examining lumber equipment when he spotted shiny rocks in the American River near present-day Auburn. After finding several along the stretch of the river, he took a few samples and examined them determining that they were not rocks but minerals. After performing various tests, Marshall discovered that he had found gold. Despite attempts by Sutter to maintain secrecy, the news was soon carried by the mill workers west to San Francisco. After military officers toured the gold fields and confirmed the discovery, a report was issued to the United States Congress, ultimately leading President Polk to publicly declare the discovery to the nation. Soon, large flocks of immigrants from across the country flooded into California.
Mining Settlements and Techniques
Most of the mining settlements in California were established in the foothills of Northern California in close proximity to Sutter's Mill. Due to a high abundance of natural resources deposited by earlier geological activities, the western edge of the Sierra (particularly cities located in present-day Sierra, Nevada, Placer, Amador, and El Dorado counties) were heavily mined for gold and other minerals. Many mining towns stretched from Mariposa in the south to several smaller mining towns in the north near Chico along the region known as the Mother Lode (a reference to the large amount of gold found in the regions).
Initial gold mining techniques took place on a small scale and had relatively low impacts on the environment. Originally, panning for gold in the American River (using water in a shallow pan to sift through river gravel), was one of the most common methods. While simple, the process yielded relatively little profit because of the long, slow process. Other methods included using rockers and sluice boxes to sift through river gravel and sediment. These processes were faster than gold panning, but were still slow and proved problematic in finding smaller nuggets amongst the larger rock. Additionally, these early methods were forms of placer mining or mining that occurred near the surface. This proved to be problematic for miners trying to reach larger yields embedded within the Mother Lode and not pieces of gold simply on the surface.
Hydraulic Mining
Rise of Hydraulic Mining
As more miners flooded into the region, placer mining became less profitable and gold more scarce. Remaining pieces of gold were unattainable and embedded deep within the hillsides of the Mother Lode. As a result, many miners took an interest in new techniques and technologies that could be used to obtain the deeper gold fields. A new method used in Nevada City in 1853 was of particular interest; miner Edward Matteson had successfully used a high-pressure hose to wash away gravel and uncover gold. Excited by the prospect of obtaining higher yields of gold, miners scrambled together to attract wealthy investors and form companies.