)The rails were wrought iron, carried in cast iron chairs supported on granite blocks.As parts of the line were completed, hauliers were allowed to use them forthwith, and this took place from 1824; it was not until 30 January 1826 that the line was considered substantially complete (although the Chacewater branch had not been started, and in fact was never built) and an official opening took place, when some of the proprietors travelled from Wheal Buller to Devoran (by gravity) and then back to Redruth (pulled by a horse).