The Kukioka No. 2 blast furnace at Yawata has a production of 700 tons of basic pig iron per day. It was constructed in October 1933 The main dimensions of this furnace are as following; total height 24m., bosh diameter 7·4m., hearth diameter 6·7m., bosh angle 83°31′, bosh height 3·1m., total inner volume 837m3. The shaft is entirely surrounded with a steel plate shell. For the handling of the raw