US industrial production was unchanged in May, the US Federal Reserve said today. This follows a large increase in April and smaller increases in February and March. Manufacturing output declined 0.4% in May; the index is little changed, on net, since February. The indexes for mining and utilities posted gains of 1.6% and 0.4%, respectively, in May. At 105% of its 2012 average, total industrial production in May was 2.2% above its year-earlier level.