Table 3--U.S. primary lead refinery production (Metric tons) --------------------------------------------------------------------------------------------------------- Source material 19291/ 1930 1931 1932 1933 1934 1935 --------------------------------------------------------------------------------------------------------- Refined lead: Domestic ores and base bullion --------- 610,080 520,488 354,038 231,638 235,520 272,011 281,685 Foreign ores and base bullion ---------- 92,655 62,862 47,631 29,959 12,667 10,337 12,750 --------------------------------------------------------------- Total2/ ------------------------------ 702,735 583,350 401,669 261,597 248,187 282,349 294,436 --------------------------------------------------------------- 1936 1937 1938 1939 1940 1941 1942 --------------------------------------------------------------- Refined lead: Domestic ores and base bullion --------- 351,714 402,012 301,153 381,895 392,870 426,846 423,988 Foreign ores and base bullion ---------- 10,395 21,931 46,906 57,214 90,822 91,127 90,240 --------------------------------------------------------------- Total2/ ------------------------------ 362,108 423,943 348,059 439,109 483,692 517,973 514,228 --------------------------------------------------------------- 1943 1944 1945 1946 1947 1948 1949 --------------------------------------------------------------- Refined lead: Domestic ores and base bullion --------- 368,811 357,833 323,443 266,086 345,736 307,910 366,910 Foreign ores and base bullion ---------- 57,214 63,793 78,970 40,722 54,341 61,036 66,124 --------------------------------------------------------------- Total2/ ------------------------------ 426,025 421,626 402,414 306,807 400,078 368,947 433,034 --------------------------------------------------------------- 1950 1951 1952 1953 1954 1955 1956 --------------------------------------------------------------- Refined lead: Domestic ores and base bullion --------- 379,937 310,841 347,777 297,568 292,359 291,326 316,778 Foreign ores and base bullion ---------- 81,198 68,083 81,188 126,896 149,178 143,362 175,196 --------------------------------------------------------------- Total2/ ------------------------------ 461,135 378,925 428,964 424,464 441,538 434,689 491,974 --------------------------------------------------------------- 1957 1958 1959 1960 1961 1962 1963 --------------------------------------------------------------- Refined lead: Domestic ores and base bullion --------- 315,406 244,107 204,362 207,654 261,340 222,845 217,416 Foreign ores and base bullion ---------- 168,608 182,411 104,926 139,286 146,499 118,313 140,679 --------------------------------------------------------------- Total2/ ------------------------------ 484,013 426,518 309,287 346,940 407,839 341,159 358,095 --------------------------------------------------------------- 1964 1965 1966 1967 1968 1969 1970 --------------------------------------------------------------- Refined lead: Domestic ores and base bullion --------- 266,943 276,698 289,071 234,514 316,643 466,230 479,072 Foreign ores and base bullion ---------- 140,772 102,731 110,757 110,120 107,294 113,148 125,776 --------------------------------------------------------------- Total2/ ------------------------------ 407,715 379,429 399,828 344,634 423,937 579,378 604,847 --------------------------------------------------------------- 1971 1972 1973 1974 1975 1976 1977 --------------------------------------------------------------- Refined lead: Domestic ores and base bullion --------- 519,837 523,807 514,606 526,238 481,003 515,767 486,659 Foreign ores and base bullion ---------- 69,847 93,441 97,305 84,319 96,077 76,513 62,041 --------------------------------------------------------------- Total2/ ------------------------------ 589,684 617,248 611,911 610,557 577,080 592,280 548,700 --------------------------------------------------------------- 1978 1979 1980 1981 1982 19833/ 1984 --------------------------------------------------------------- Refined lead: Domestic ores and base bullion --------- 501,643 529,970 508,163 440,238 459,865 463,940 323,989 Foreign ores and base bullion ---------- 63,530 45,641 39,427 55,085 52,295 55,227 65,409 --------------------------------------------------------------- Total2/ ------------------------------ 565,173 575,611 547,590 495,323 512,160 519,167 389,398 ------------------------------------------ See footnotes at end of table. Table 3--U.S. primary lead refinery production--Continued. (Metric tons) --------------------------------------------------------------------------------------------------------- Source material 1985 1986 1987 1988 1989 1990 ------------------------------------------------------------------------------------------------ Refined lead: Domestic ores and base bullion --------- 422,650 348,217 336,471 371,348 379,034 385,637 Foreign ores and base bullion ---------- 71,353 22,071 37,139 20,739 17,421 18,020 ------------------------------------------------------ Total2/ ------------------------------ 494,003 370,288 373,610 392,087 396,455 403,657 --------------------------------------------------------------------------------------------------------- 1/1929-40 domestic ore only; does not include base bullion. 2/Data may not add to totals shown because of independent rounding. 3/1983-90 "Total" refined lead: American Bureau of Metal Statistics Inc.; domestic and foreign ores: U.S. Bureau of Mines calculations.