The capacity of the No.2 blast furnace at Shotton is increased to 2,500 tons a day by extending the diameter of the hearth to 28ft.6 in. and by using a thinner refractory lining in the stack, to give a 15 % increase in furnace volume. Similar developments were made later, in 1974, to No. 1 furnace.
The structure of the Corporation is re-organised into product divisions, with Shotton becoming part of the Strip Mills Division.