Data Are Compiled From Reports Of From 94 To 131 Stacks Each Month Reporting The Following Percentages Of Total Merchant Pig Iron Production: 1919-77%; 1920-71%; 1921-68%; 1922-57%; 1923-51%; 1924-58%; 1925-55%. No Percentage Figure Is Given For 1926. It Is Stated, However, That These Data Represent About 90 % Of Production Instinct By Merchant Furnaces, That Those Made Of Iron For Sale Instead Of For Further Use In Their Own Places. Source: Record Book Of Business Statistics, Part Ii, P. 18.
This NBER data series m06021 appears on the NBER website in Chapter 6 at http://www.nber.org/databases/macrohistory/contents/chapter06.html.
NBER Indicator: m06021
Release: NBER Macrohistory Database
National Bureau of Economic Research, New Orders of Merchant Pig Iron for United States [M06021USM576NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M06021USM576NNBR/, September 4, 2015.