474.3  Proceedings.
  The utilities board may in all cases conduct its proceedings, when not otherwise prescribed by law, in such manner as will best conduce to the proper dispatch of business and the attainment of justice.
[C97, §2142; C24, 27, 31, 35, 39, §7867; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §474.3]