716 



UNITED STATES MINERAL RESOURCES 



Figure 78.— U.S. consumption, imports, and exports of zirconium concentrates, 1944-71. Figures for U.S. total consumption 

 for 1963-66 not available. Data from U.S. Bur. Mines "Minerals Yearbooks, 1944-70" and "Commodity Data Summaries, 

 1972." 



The United States exported nearly $6.9 million 

 worth of zirconium ores, concentrates, and zirconi- 

 um-bearing materials to 30 countries on all the 



continents. Exports to Canada were valued at $3 

 million. 



Although the United States imports a considerable 



