Table 1.--Salient copper statistics (Metric tons unless otherwise specified) -------------------------------------------------------------------------------------------------------- Mine production -------------------------------------------------- U.S. refinery production Average U.S. percent ------------------------------------------- U.S. yield of World of world Primary sources Year mine copper mine mine --------------------- production1/ (percent)2/ production production Domestic Foreign Secondary Total -------------------------------------------------------------------------------------------------------- 1970---- 1,560,047 0.59 5,900,200 26 1,379,994 221,272 464,124 2,065,390 1971---- 1,380,902 .55 5,942,600 23 1,279,606 164,435 363,475 1,807,516 1972---- 1,510,318 .55 6,542,700 23 1,524,445 174,924 383,960 2,083,329 1973---- 1,558,489 .53 6,915,900 22 1,540,706 154,358 421,952 2,117,016 1974---- 1,448,776 .49 7,098,300 20 1,288,953 212,057 450,787 1,951,797 1975---- 1,282,184 .47 6,739,100 19 1,166,811 142,600 307,553 1,616,964 1976---- 1,456,561 .51 7,260,600 20 1,290,673 105,764 340,335 1,736,772 1977---- 1,364,374 .52 7,417,000 18 1,280,036 77,280 349,645 1,706,961 1978---- 1,357,586 .51 7,278,700 19 1,327,371 121,684 420,103 1,869,158 1979---- 1,446,586 .47 7,344,900 20 1,412,795 103,857 498,459 2,015,111 1980---- 1,181,116 .48 7,204,000 16 1,126,215 88,957 515,083 3/1,730,254 1981---- 1,538,160 .51 7,692,900 20 1,430,213 113,807 482,837 2,026,857 1982---- 1,146,975 .55 7,577,600 15 1,064,215 162,246 467,549 1,694,010 1983---- 1,038,098 .51 7,609,900 14 1,015,065 178,422 403,527 1,597,014 1984---- 1,102,613 .58 7,813,700 14 1,079,062 95,016 330,081 1,504,159 1985---- 1,104,823 .61 7,992,400 14 1,003,713 53,528 371,787 1,429,028 1986---- 1,144,213 .60 8,319,300 14 1,032,968 41,013 405,944 1,479,925 1987---- 1,243,596 .57 8,617,400 14 1,126,908 W 414,738 1,541,646 1988---- 1,416,928 .60 8,681,100 17 1,282,370 123,650 446,427 1,852,447 1989---- 1,497,818 .61 9,036,600 17 1,351,748 125,085 480,018 1,956,851 1990---- 1,587,742 .62 9,035,500 18 1,502,014 74,620 440,757 3/2,017,390 ------------------------------------------------------------------------------------------------ Copper recovered from scrap at U.S. plants4/ ----------------------- Old scrap All scrap ----------------------- 1970---- 457,286 1,131,806 1971---- 403,812 1,088,731 1972---- 415,667 1,180,223 1973---- 441,086 1,190,503 1974---- 438,562 1,219,547 1975---- 334,908 881,752 1976---- 380,225 1,038,975 1977---- 409,928 1,085,425 1978---- 501,650 1,247,235 1979---- 604,301 1,552,525 1980---- 613,458 1,437,427 1981---- 591,805 1,407,397 1982---- 517,726 1,187,466 1983---- 449,478 1,083,579 1984---- 460,695 1,119,914 1985---- 503,407 1,139,084 1986---- 479,213 1,126,528 1987---- 497,937 1,214,059 1988---- 518,179 1,306,891 1989---- 547,561 1,308,455 1990---- 535,656 1,309,245 -------------------------------------------------------------------------------------------------------- W Withheld to avoid disclosing company proprietary data; included with "Domestic." 1/U.S. mine production is recoverable copper at the smelter level. 2/Yield of copper is calculated from the recoverable copper content, at the smelter level, of mined copper ore concentrated or leached. 3/Data do not add to total shown because of independent rounding. 4/Copper recovered from copper-base scrap and other metal-base scrap.