William Ascarza is an archivist, historian and author. Email him at mining@tucson.com
Railroad transportation proved indispensable to the development of the mining industry in Arizona, connecting it to lucrative markets in California and the Eastern states.
The arrival of the “iron horse” established towns and injected capital to advance mining interests through delivery of equipment and supplies while providing ease of ore transport to distant markets for refinement and profit.
Early talk of involving rail transportation in Arizona dates to shortly after the end of the Mexican-American War, when Congress financed surveys with the intention of establishing transcontinental railroad lines through what was then part of New Mexico Territory. Euphoric Manifest Destiny aspirations of the late 1850s included a railroad connecting mining operations around Tubac to Guaymas, Mexico.
This connection was deemed essential by William Wrightson, superintendent of the Santa Rita Mining Co.
Attempts to annex Sonora, Mexico, including a final expedition led by Henry Crabb in 1857, resulted in failure, as was the proposed rail line at the time. The Civil War, coupled with lack of financing, hindered rail in Arizona for the next two decades.