By the 1830s, it was known that deposits of [[iron|iron ore]] were located in and around Pilot Knob, and the first mine was opened in 1835, followed in subsequent years by the establishment of furnaces and forges. Largely to transport the refined ore to distant markets, the St. Louis and Iron Mountain Railroad was completed in the late 1850s, about the same time as the organization of Iron County in 1857.<ref>https://collections.shsmo.org/manuscripts/columbia/C2366/iron-county</ref> It was also at this time that the community of Pilot Knob, growing from the arrival of miners and ironworkers, came into existence, being formally laid out in 1858. | By the 1830s, it was known that deposits of [[iron|iron ore]] were located in and around Pilot Knob, and the first mine was opened in 1835, followed in subsequent years by the establishment of furnaces and forges. Largely to transport the refined ore to distant markets, the St. Louis and Iron Mountain Railroad was completed in the late 1850s, about the same time as the organization of Iron County in 1857.<ref>https://collections.shsmo.org/manuscripts/columbia/C2366/iron-county</ref> It was also at this time that the community of Pilot Knob, growing from the arrival of miners and ironworkers, came into existence, being formally laid out in 1858. |