FIGURE 3
MAJOR SOURCES OF U.S. COLUMBIUM IMPORTS


Brazil
'o..


Other
(7Y4


Brail


Canada
(25%)


(8%}


1993


Germany
(4%)
Other
(5%)


Canada
(25%)


1990-93
FIGURE 4
MAJOR SOURCES OF U.S. TANTALUM IMPORTS


Australia
(28%)


Germany
(22%)


Brazil
(M


Canada
(3%)


1993


Other
(38%


Canada
(9%)


Australia
(21%)


Germany
(27%)


1990-93


325


COLUMBIUM (NIOBIUM) AND TANTALUM-1993








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