Table 10.--Yearend stocks of titanium concentrates and pigment in the United States (Metric tons) ------------------------------------------------------------------------------------------------------------------------ 1941 1942 1943 1944 1945 -------------------- -------------------- -------------------- -------------------- -------------------- Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 weight contente/ weight contente/ weight contente/ weight contente/ weight contente/ ------------------------------------------------------------------------------------------------------------------------ Ilmenite------- 319,384 178,150 156,590 83,686 115,715 56,290 152,122 68,812 247,297 123,160 Titanium slag-- NA NA NA NA NA NA NA NA NA NA Rutile--------- 3,299 3,077 5,381 5,026 5,657 5,296 6,354 5,929 9,190 8,545 TiO2 pigment--- NA NA NA NA NA NA NA NA NA NA --------------------------------------------------------------------------------------------------------- 1946 1947 1948 1949 1950 -------------------- -------------------- -------------------- -------------------- -------------------- Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 weight contente/ weight contente/ weight contente/ weight contente/ weight contente/ --------------------------------------------------------------------------------------------------------- Ilmenite------- 345,843 179,903 411,356 211,402 481,316 230,578 633,985 307,666 618,898 303,191 Titanium slag-- NA NA NA NA NA NA NA NA NA NA Rutile--------- 13,434 12,391 12,643 11,832 8,356 7,838 7,814 7,323 7,556 7,065 TiO2 pigment--- NA NA NA NA NA NA NA NA NA NA --------------------------------------------------------------------------------------------------------- 1951 1952 1953 1954 1955 -------------------- -------------------- -------------------- -------------------- -------------------- Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 weight contente/ weight contente/ weight contente/ weight contente/ weight contente/ --------------------------------------------------------------------------------------------------------- Ilmenite------- 614,659 303,500 603,748 303,877 553,633 280,344 575,951 299,428 596,470 305,521 Titanium slag-- 2,722 NA 15,075 10,978 70,693 49,897 74,042 52,032 58,471 41,314 Rutile--------- 5,801 5,491 12,463 11,864 15,302 14,556 15,308 14,535 14,210 13,546 TiO2 pigment--- NA NA NA NA NA NA NA NA NA NA --------------------------------------------------------------------------------------------------------- 1956 1957 1958 1959 1960 -------------------- -------------------- -------------------- -------------------- -------------------- Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 weight contente/ weight contente/ weight contente/ weight contente/ weight contente/ --------------------------------------------------------------------------------------------------------- Ilmenite------- 543,973 282,325 666,550 344,430 720,799 367,825 646,965 336,539 707,137 366,421 Titanium slag-- 101,647 72,001 162,714 114,971 139,248 98,226 140,624 99,343 120,312 85,009 Rutile--------- 24,264 23,131 53,498 50,976 62,934 59,724 69,300 65,589 70,562 66,766 TiO2 pigment--- NA NA NA NA NA NA NA NA NA NA --------------------------------------------------------------------------------------------------------- 1961 1962 1963 1964 1965 -------------------- -------------------- -------------------- -------------------- -------------------- Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 weight contente/ weight contente/ weight contente/ weight contente/ weight contente/ --------------------------------------------------------------------------------------------------------- Ilmenite------- 640,281 355,258 545,623 297,593 592,624 326,518 620,159 346,543 692,309 387,344 Titanium slag-- 118,765 84,710 127,144 90,805 95,980 68,495 108,132 77,039 98,966 70,273 Rutile--------- 71,811 67,822 68,390 64,916 84,180 80,348 126,773 121,879 148,418 142,984 TiO2 pigment--- NA NA NA NA NA NA NA NA NA NA --------------------------------------------------------------------------------------------------------- 1966 1967 1968 1969 1970 -------------------- -------------------- -------------------- -------------------- -------------------- Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 weight contente/ weight contente/ weight contente/ weight contente/ weight contente/ --------------------------------------------------------------------------------------------------------- Ilmenite------- 723,136 408,059 776,326 438,172 808,314 457,301 768,966 431,784 733,480 415,533 Titanium slag-- 124,528 88,017 118,287 83,742 108,632 76,878 93,805 66,504 104,559 74,172 Rutile--------- 157,345 151,263 168,991 162,351 198,236 190,366 176,327 169,810 215,507 206,556 TiO2 pigment--- NA NA 93,703 NA 85,504 NA 91,490 NA 96,940 NA --------------------------------------------------------------------------------------------------------- 1971 1972 1973 1974 1975 -------------------- -------------------- -------------------- -------------------- -------------------- Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 weight contente/ weight contente/ weight contente/ weight contente/ weight contente/ --------------------------------------------------------------------------------------------------------- Ilmenite------- 585,232 347,555 484,894 285,386 515,124 298,897 519,452 295,668 577,769 343,080 Titanium slag-- 98,216 69,618 129,093 91,395 100,710 71,350 52,555 37,046 79,545 56,363 Rutile--------- 214,962 204,956 143,432 136,805 133,983 126,680 97,814 91,983 126,618 119,514 TiO2 pigment--- 81,052 NA 43,772 NA 30,955 NA 83,117 NA 78,342 NA ----------------------------------- See footnotes at end of table. Table 10.--Yearend stocks of titanium concentrates and pigment in the United States--Continued (Metric tons) ------------------------------------------------------------------------------------------------------------------------ 1976 1977 1978 1979 1980 -------------------- -------------------- -------------------- -------------------- -------------------- Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 weight contente/ weight contente/ weight contente/ weight contente/ weight contente/ ------------------------------------------------------------------------------------------------------------------------ Ilmenite------- 641,741 389,909 730,303 448,747 e/735,507 463,055 661,224 419,496 845,081 530,051 Titanium slag-- 89,909 63,723 56,773 40,337 95,876 68,127 68,120 51,634 155,943 116,103 Rutile--------- 138,120 129,948 132,631 124,225 e/166,734 156,657 e/115,614 108,814 142,327 133,964 TiO2 pigment--- 64,915 NA NA 103,825 NA 84,704 NA 48,995 NA 75,511 --------------------------------------------------------------------------------------------------------- 1981 1982 1983 1984 1985 -------------------- -------------------- -------------------- -------------------- -------------------- Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 weight contente/ weight contente/ weight contente/ weight contente/ weight contente/ --------------------------------------------------------------------------------------------------------- Ilmenite------- 775,139 492,705 673,716 427,081 361,862 230,640 182,427 116,580 215,393 133,680 Titanium slag-- 184,786 136,718 123,164 94,045 71,103 55,362 60,418 47,534 96,218 76,041 Rutile--------- 147,920 139,498 159,736 150,377 117,966 110,848 92,649 87,259 105,209 99,173 TiO2 pigment--- NA 92,704 78,919 NA 70,275 65,317 75,780 e/70,528 51,488 e/47,211 --------------------------------------------------------------------------------------------------------- 1986 1987 1988 1989 1990 -------------------- -------------------- -------------------- -------------------- -------------------- Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 Gross TiO2 weight contente/ weight contente/ weight contente/ weight contente/ weight contente/ --------------------------------------------------------------------------------------------------------- Ilmenite------- 253,201 153,970 198,094 120,016 173,372 98,772 236,679 137,643 341,891 196,645 Titanium slag-- 73,378 59,160 119,554 96,994 129,537 105,429 96,067 78,078 85,960 68,605 Rutile--------- 103,408 97,514 107,642 99,987 117,751 108,339 155,024 144,618 171,085 161,026 TiO2 pigment--- 69,759 e/64,851 47,478 e/44,358 49,734 e/46,053 63,205 e/57,597 61,721 e/57,597 ------------------------------------------------------------------------------------------------------------------------ e/Estimated. NA Not available.