dollars each month at a time when Chinese miners were making approximately six dollars a month. Tax collectors could legally take and sell the property of those miners who refused or could not pay the tax. Fake tax collectors made money by taking advantage of people who could not speak English well, and some tax collectors, both false and real, stabbed or shot miners who could not or would not pay the tax. During the 1860s, many Chinese were expelled from the mine fields and forced to find other jobs. The Foreign Miner's Tax existed until 1870. The position of the Chinese gold seekers also was complicated by a decision of the California Supreme Court, which decided, in the case The People of the State of California v. George W. Hall in 1854 that the Chinese were not allowed to testify as witnesses before the court in California against white citizens, including those accused of murder. The decision was largely based upon the prevailing opinion that the Chinese were: The ruling effectively made white violence against Chinese Americans unprosecutable, arguably leading to more intense white-on-Chinese race riots, such as the 1877 San Francisco riot. The Chinese living in California were with this decision left practically in a legal vacuum, because they had now no possibility to assert their rightful legal entitlements or claims—possibly in cases of theft or breaches of agreement—in court. The ruling remained in force until 1873. Transcontinental railroad After the gold rush wound down in the 1860s, the majority of the work force found jobs in the railroad industry. Chinese labor was integral to the construction of the first transcontinental railroad, which linked the railway network of the Eastern United States with California on the Pacific coast. Construction began in 1863 at the terminal points of Omaha, Nebraska and Sacramento, California, and the two sections were merged and ceremonially completed on May 10, 1869, at the famous "golden spike" event at Promontory Summit, Utah. It created a nationwide mechanized transportation network that revolutionized the population and economy of the American West. This network caused the wagon trains of previous decades to become obsolete, exchanging it for a modern transportation system. The building of the railway required enormous labor in the crossing of plains and high mountains by the Union Pacific Railroad and Central Pacific Railroad, the two privately chartered federally backed enterprises that built the line westward