Table 1.--U.S. rare-earth mine production1/
                 (Metric tons rare-earth oxide equivalent)
           ------------------------------------------------------
                                                Bastnasite
           Year                                 concentrate
           ------------------------------------------------------
           1970-------------------------           9,105
           1971-------------------------           9,823
           1972-------------------------          10,707
           1973-------------------------          17,554
           1974-------------------------          19,913
           1975-------------------------          14,969
           1976-------------------------          13,038
           1977-------------------------          15,359
           1978-------------------------          14,148
           1979-------------------------          16,515
           1980-------------------------          15,986
           1981-------------------------          17,082
           1982-------------------------          17,501
           1983-------------------------          17,083
           1984-------------------------          25,311
           1985-------------------------          13,428
           1986-------------------------          11,094
           1987-------------------------          16,710
           1988-------------------------          11,533
           1989-------------------------          20,787
           1990-------------------------          22,713
           ------------------------------------------------------
             1/Includes only the rare earth derived from bastnasite,
           as reported in the Unocal Corp. and Union Oil of
           California annual reports.