 There is reason to believe from Committee minutes that they intended to do so, but the necessary clauses were not inserted into the 1820 Act.In April 1820, contracts had been let to William Bailey for the supply of cast iron rails; they were to be of the fishbelly pattern 2 ft 10 in (864 mm) long and 6 inches (150 mm) deep; they were to be butt jointed at the supports on stone blocks.The gauge was to be , it is not clear who chose this, or why.