Series Is Presented Here As Two Variables--(1)--Original Data, 1879-1922 (2)--Original Data, 1911-1958. Data Includes Not Only Shipments But Also Dredge Coal, As Well As Coal Used As Mine Fuel And Used Locally. Data Reflect Strike Of September 1, 1925 To February 12, 1926, And Strike In May Of 1945. Beginning With 1941, Small Quantities Purchased From "Bootleg" Operators (Working On Land Neither Owned Nor Leased By Them) Have Been Included In The Regular Production Figures. Data Beginning 1951 Include Total Production Of Independent Operators, Previous Figures Included Only Coal Purchased From Independents. Source: Bureau Of Anthracite Coal Statistics, Mineral Resources And Minerals Yearbooks.
This NBER data series m01117b appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.
NBER Indicator: m01117b
Release: NBER Macrohistory Database
National Bureau of Economic Research, Anthracite Coal Production for United States [M0117BUSM601NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0117BUSM601NNBR/, August 3, 2015.