The Industrial Production Index (INDPRO) is an economic indicator that measures real output for all facilities located in the United States manufacturing, mining, and electric, and gas utilities (excluding those in U.S. territories).(1) A separate set of data and documentation show seasonally adjusted indexes for total industrial production, manufacturing, mining, and utilities as they were originally published and subsequently revised during the normal six-month estimation period (or four-month period before April 2008). In addition, beginning with the estimates for March Table: Indices of world industrial production, by branches of industry and regions: Technical note: The indices of industrial production are classified according to sections, divisions and combinations of divisions of the International Standard Industrial Classification of All Economic Activities (ISIC), Rev.4 for mining, manufacturing, electricity, gas and steam, water supply and waste