Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Millions of Short Or Net Tons, Not Seasonally Adjusted

Frequency:  Monthly

Series Is Presented Here As Two Variables--(1)--Original Data, 1897-1926 (2)--Original Data, 1927-1941. Source: Data Are From Mineral Resources, 1925, Part Ii P. 543; 1928, Part Ii, P.719; 1931, Part Ii, P.379.

This NBER data series m01120a appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.

NBER Indicator: m01120a