The Tonopah and Tidewater Railroad was a former class II railroad that served eastern California and southwestern Nevada. The railroad was built mainly to haul borax from Francis Marion Smith's Pacific Coast Borax Company mines located just east of Death Valley, but it also hauled lead, clay, feldspar, passengers and general goods across the desert to a connection with the Atchison, Topeka and Santa Fe Railroad at Ludlow, California, and to the Los Angeles and Salt Lake Railroad (later Union Pacific Railroad) at Crucero, California. The railroad was originally intended to run from Tonopah, Nevada to San Diego, California (the "tidewater"), but never made it to either on its own rails. It was famous for being the last of the three railroads built to cross the Death Valley region, and outlasting them by over 30 years providing dedicated and reliable service to the desert residents. The T&T also formed part of a potential north-south transcontinental railroad route, connected together by four different US railway companies, later used as the basis to potentially form a Mid-Pacific Railroad. The railroad operated from 1907 until 1940, when it suspended operations due to a lack of profitable traffic. The rails were taken up in 1943 for use in World War II and the company itself was officially abandoned by 1946. History Francis Marion Smith was one of California's most successful entrepreneurs and mining tycoons. In 1890, he had incorporated the Pacific Coast Borax Company and operated the largest borax mine in the world at Borate, located north of Daggett, California, with the Borate and Daggett Railroad running a more than adequate service between the two stops. Smith was also responsible for building several interurban and rapid transport systems around Oakland, California and San Francisco, California. By 1901, Smith started searching some old borax claims located in the Black Mountains, just east of Death Valley, and located the Lila C. mine, about from the nearest railhead of Ivanpah, California on the Santa Fe. To bring the borax out from this remote region, he tried to use an old steam tractor to haul the ore, but it was not suited for the harsh desert conditions and was quickly taken out of service. Smith then considered the idea of building a railroad from the nearest point possible on the Santa Fe, to connect the Lila C. to the most intermediate route to his refineries at Alameda, California