of whom were Californios who remained after the United States had annexed the territory, were prospecting for gold in the foothills of the Sierra Nevada. Although the territory they were in had up until recently been Mexican land, Californios and other Mexicans very quickly became the minorities and were seen as the foreigners. Once the Gold Rush had truly started in 1849, the campsites were segregated by nationality, further establishing the fact that "Americans" had taken the title as the majority ethnicity in Northern California. Because the Californio "foreigners" so quickly became a minority, their claims to land protected under the Treaty of Guadalupe Hidalgo were ignored when miners overran their land and squatted. Any protests by Californios were quickly put down by hastily formed Euro-American militias, so any legal protection provided by the new California legislature was ineffective when the threat of violence and lynchings loomed. Even if Californios were able to win their land back in court, often lawyer's fees cost large sums of land that left them with a fraction of their former wealth. Working conditions Many Latino miners were experienced due to learning a "dry-digging" technique in the Mexican mining state of Sonora. Their early success drew praise and respect from Euro-American miners, they eventually became jealous and used threats and violence to force Mexican workers out of their plots and into less lucrative ones. In addition to these informal forms of discrimination, Anglo miners also worked to establish Jim Crow-like laws to prevent Latinos from mining altogether. In 1851, mob violence as well as the Foreign Miners' Tax discussed below forced between five thousand and fifteen thousand foreigners out of work in just a few months. According to Antonio F. Coronel's accounts, there was systematic race-influenced violence conducted by Americans to force out Californios and other Latinos. One account tells of a Frenchman and "un español" being lynched for supposed theft in 1848. Despite offers by Californios to replace the reported amount of gold stolen, they were still hanged. In addition, later in the Gold Rush, Coronel and his group found a rich vein of gold on the American River. When Euro-Americans caught wind of this, the invaded the claim armed and insisted it was their plot, forcing out Colonel and ending his mining career. Accounts like these show the harsh and violent living and working conditions that Californios were faced with during the Gold