Table 1.--U.S. historical salient tungsten statistics
                                           (Metric tons tungsten content)
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        Concentrate shipments Imports for consumption          Exports
Year    --------------------- ------------------------ ----------------------    Scrap,                   Net import
           Mine      Defense   Concentrate     Primary Concentrate    Primary   reported      Apparent      reliance
                    stockpile                  metal1/                metal1/  consumption  consumption2/ (percent)2/
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1970----  4,224         6,834          582         108     e/8,831        449     e/680      3/6,963          (4/)
1971----  3,097           626          190         145         910        456       598      3/5,061          (4/)
1972----  3,196             1        2,603         641          43        511       668        6,505            41
1973----  3,202           576        4,914         909          41      1,074       963        9,932            58
1974----  3,554         2,902        5,033       1,080         538      1,864     1,048       10,731            57
1975----  2,490         1,347        2,890         734         597        765       944        6,328            55
1976----  2,662         1,816        2,405         642         784        937       958        7,766            52
1977----  2,732         2,275        3,138         735         582      1,205     1,393        8,524            52
1978----  3,130         2,522        4,145       1,168         841      1,417     1,353       10,139            56
1979----  3,014         2,351        5,149       1,450         875      1,724     1,498       10,792            58
1980----  2,738         1,703        5,158       1,041         920      1,785     1,920        9,939            53
1981----  3,545           958        5,331       1,280          79      2,279     1,638       10,316            50
1982----  1,575           344        3,528       1,844         305      1,713     1,921        6,050            42
1983----  1,016           259        2,861       1,230           1        952     2,076        6,478            52
1984----  1,173         1,368        5,807       2,285         129      1,571     1,883       10,164            70
1985----    983           902        4,746       2,372         124      2,568     1,622        8,211            68
1986----    817           301        2,522       2,229          34      1,568     1,508        7,767            70
1987----     34           708        4,414       2,596           2      1,666     1,607        7,951            79
1988----      W           524        8,045       3,053         172      1,874     2,259       11,065            76
1989----      W           466        7,896       2,619         203      2,585     1,942       10,474            77
1990----      W            --        6,429       2,412         139      2,795     1,961        8,287            73
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  e/Estimated.  W  Withheld to avoid disclosing company proprietary data.
  1/Tungsten content of intermediate processed materials including ammonium paratungstate, ferrotungsten, tungsten
metal powder, tungsten carbide powder, other chemicals and wrought and unwrought metal.
  2/Net import reliance is expressed as a percent of apparent consumption. Net import reliance is calculated as
imports minus exports plus adjustments for changes in industry and Government stocks. Apparent consumption equals
mine shipments plus reported scrap consumption plus net import reliance.
  3/Reported consumption.
  4/Net exporter.