"c 01206 PRIMARY METAL INDUSTRIES MD= 1E-37 " "c " "c " "c PIG IRON PRODUCTION " "c ------------------------------------------- " "c " "c " "c NBER SERIES: 01206 " "c AREA COVERED: U.S. " "c UNITS: " " "c ANNUAL COVERAGE: 1846-1963 " "c QUARTERLY COVERAGE: NONE " "c MONTHLY COVERAGE: NONE6 " "c SEASONAL ADJUSTMENT: NONE " "c SOURCE : 1846-1930 HISTORICAL STATISTICS OF THE US ,1789-1945" "c 1931-1933 AMER. METAL MARKET, METAL STATISTICS " "c 1934-1963 AMER. IRON AND STEEL INST., 1948,1960 AND 1963 REPORTS" "c NOTE: " "c " "c ............................................................... "