Sub-Chapter200520062007200820102011
Iron ores and concentrates$426     
Copper ores and concentrates. $26 $425  
Tin ores and concentrates.  $42   
Chromium ores and concentrates.$19     
Uranium or thorium ores and concentrates.$13,473     
Other ores and concentrates.$5,767 $32$138$1,249$18,227
Total$19,685$26$74$563$1,249$18,227