According to Japan Industrial & Medical Gases Association (JIMGA), amount of crude steel produced and of oxygen consumed in 2011 were down by1.5% over 2010 for pig iron produced while being up by 0.5 % for oxygen consumed, and down by 2.1% for converter steel and by 5.7% for oxygen consumed, as well as up by 4.2% for electric furnace steel while down by 0.5% for oxygen consumed. Total amount of crude steel produced were down by 1.8%, coming to 107.6 million tons. This is a reduction for the first time in the latest 2 years. It seems that the Great Eastern Japan Earthquake and high appreciation of the yen had a great impact. In addition, consumption of oxygen also reduced by 5.1% over the previous year. Production of electric furnace steel has exceeded the previous year for the second consecutive year. It seems to that there is increasing of demand for construction after the Earthquake and increasing of reinforcement work against earthquake.